Browsing by Subject "Taking Stock - Land Use"

Now showing 1 - 17 of 17
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    American Indian Gathering and Recreation Uses of National Forests
    (2004) McAvoy, Leo; Shirilla, Paul; Flood, Joseph
    This paper identifies and describes the patterns of use of the Chippewa National Forest (Minnesota) by Leech Lake Band of Ojibwe members; and, the use patterns of six national forests in northwest Montana by the Confederated Salish and Kootenai Tribes. The paper also identifies conflicts tribal members encounter while using the forests and makes recommendations regarding the management of national forests in light of tribal members' use of these lands. The implications from both study areas indicate that Forest Service managers should pay more attention to cooperative approaches, and potential co-management of forest resources that are near American Indian reservations. Managers need to be more sensitive to American Indians' uses and values associated with national forests and other protected lands that are close to reservations. They also need to be aware of the history of government and tribal relations, as well as tribal member traditional and historic uses of forests.
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    Breeding Bird Communities Across an Upland Disturbance Gradient in the Western Lake Superior Region
    (2007) Miller, Christina; Niemi, Gerald J; Hanowski, JoAnn M; Regal, Ronald R
    The coastal region of western Lake Superior to examine relationships to human land use. Eighty-four species were detected and 50 were abundant enough to be included in data analysis. Monotonic quadratic regression models were constructed for these 50 species by using species counts as the dependent variable and the proportion of human conversion of the landscape (residential, agriculture, and commercial/industrial land uses) within each study area as the independent variable. Twenty-seven bird species had significant regressions (P < 0.05), 18 of which generally avoided areas developed by humans and 9 of which were attracted to development. De-trended correspondence analysis using counts of these 27 bird species was used to investigate multivariate, community responses to development. The first DCA axis was interpreted as a gradient from urban avoiding to urban exploiting bird species and was strongly correlated with land cover variables related to human development. Our results advance the idea that breeding bird communities can be used as indicators of ecological condition and can diagnose potential causes for changes in these conditions. Further, our study points out the usefulness of bird monitoring data in regional planning efforts that incorporate goals for maintaining native biological diversity.
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    Building Superior Coastal Communities
    (University of Minnesota. Minnesota Sea Grant, 2006) Schomberg, Jesse; Hagley, Cindy; Desotelle, Diane; O'Halloran, Sue
    Changes to this region and its human population are inevitable. This paper provides a discussion of human-induced stresses and impacts on the Lake Superior basin (runoff, sediment and erosion, nutrient loading, increased water temperatures, bacteria and toxic contaminants). Development pressures (including subdivisions) and economic growth and industrial activities (logging, mining etc.) impact sensitive areas in the Lake Superior basin. Environmental indicators (forest cover, water storage, impervious surfaces) are summarized and explained. The paper describes fundamental management tools (natural resource inventory, comprehensive land use planning, zoning and conservation design). The document provides several examples of innovative coastal projects.
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    Duluth Parks and Recreation Master Plan: Principles and Objectives
    (2010) Duluth, Minnesota Parks and Recreation
    12 slide Powerpoint presentation. Principles, listed below, in addition to specific objectives for each are included. Principle 1: Provide Safe, Clean, Fun and Beautiful Parks Principle 2: Ensure Adequate and Stable Funding Principle 3. Build Partnerships Principle 4: Ensure equitable access Principle 5: Connect the community Principle 6: Connect with Nature Principle 7: Continue to meet evolving natural resource needs Principle 8: Be sustainable Not much reference is made about water resources in the master plan files available on the city website; most of the survey pertains to non-water recreational park use.
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    Duluth Values Open Space
    (2002) Kreag, Glenn M
    This report documents how residents perceive the importance of open spaces in Duluth, Minnesota. While not specifically about water resources, this study refers occasionally to the value of wetlands, lakes and rivers. Key findings of the survey are extracted and reproduced below. Executive summary: “Duluth is known for its extensive open spaces, particularly their natural ambiance and relation to Lake Superior. The type, nature, and quantity of open spaces contribute significantly to the character and quality of a community, a concept captured locally in the community-wide "2001 & Beyond" visioning process (completed in 1997) where participants indicated that maintaining Duluth as an "urban wilderness" was a priority. The data in this report are the result of an 8-page, 20-question survey that reached 955 Duluth residents in 2001. The University of Minnesota Sea Grant Program designed the survey with assistance and review from the EAC, the NRI Committee, and the Minnesota Center for Survey Research. Two types of open space were defined in this study: Natural Open Space - places where the native vegetation grows without significant alteration and, Developed Open Space - places where land and vegetation are altered or controlled. Of the questions relating to water resources, 93% of those taking the survey reported that they frequently use and enjoy views of Lake Superior and the St. Louis River. 50% reported using and enjoying wetland areas. Regarding developed open spaces, 68% reported using a public access for boating and fishing. 70% of respondents felt that water supply, sanitary and storm sewers were important government functions related to open spaces.”
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    Erosion Forum Summary and Resource Guide
    (2009) North Shore Management Board (NSMB)
    This document gives a brief history and background to soil and bank erosion along the north shore of Lake Superior. It summarizes presentations made during the forum, and gives examples of erosion control projects near Two Harbors. The report gives practical examples and suggestions for planners, local governments and developers.
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    Evaluating Minnesota's Historic Dams: A Framework for Management
    (Archaeo-Physics, LLC, 2013) Arnott, Sigrid; Birk, Douglas A; Maki, David
    This study assessed 31 historic mill dam sites in Minnesota. Of these, one was located in the Sea Grant coastal area. The study discusses broader impacts of dams on tribal, cultural and environmental resources generally, which are relevant to the SG study area.
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    Identifying Erosional Hotspots in Streams along the North Shore of Lake Superior, Minnesota using High-Resolution Elevation and Soils Data
    (2013) Wick, Molly Jane
    This is a University of Minnesota Water Resources Science master’s thesis describing original research to determine fluvial erosion in three coastal streams (Amity, Talmadge and French) of Minnesota’s Lake Superior shoreline. All three streams have elevated levels of turbidity, with potential for damage to fisheries. The goal of this project was to develop a GIS-based model using new, openly-available, high-resolution LiDAR datasets to predict erosional hotspots at a reach scale. The abstract summarizing the study’s key findings is extracted and reproduced below. Abstract: “Many streams on the North Shore of Lake Superior, Minnesota, USA, are impaired for turbidity driven by excess fine sediment loading. The goal of this project was to develop a GIS-based model using new, openly-available, high-resolution remote datasets to predict erosional hotspots at a reach scale, based on three study watersheds: Amity Creek, the Talmadge River, and the French River. The ability to identify erosional hotspots, or locations that are highly susceptible to erosion, using remote data would be helpful for watershed managers in implementing practices to reduce turbidity in these streams. “Erosion in streams is a balance between driving forces, largely controlled by topography; and resisting forces, controlled by the materials that make up a channel’s bed and banks. New high-resolution topography and soils datasets for the North Shore provide the opportunity to extract these driving and resisting forces from remote datasets and possibly predict erosion potential and identify erosional hotspots. We used 3-meter LiDAR-derived DEMs to calculate a stream power-based erosion index, to identify stream reaches with high radius of curvature, and to identify stream reaches proximal to high bluffs. We used the Soil Survey Geographic (SSURGO) Database to investigate changes in erodibility along the channel. Because bedrock exposure significantly limits erodibility, we investigated bedrock exposure using bedrock outcrop maps made available by the Minnesota Geological Survey (MGS, Hobbs, 2002; Hobbs, 2009), and by using a feature extraction tool to remotely map bedrock exposure using high-resolution air photos and LiDAR data. “Predictions based on remote data were compared with two datasets. Bank Erosion Hazard Index surveys, which are surveys designed to evaluate erosion susceptibility of banks, were collected along the three streams. In addition, a 500-year flood event during our field season gave us the opportunity to collect erosion data after a major event and validate our erosion hotspot predictions. Regressions between predictors and field datasets indicate that the most significant variables are bedrock exposure, the stream power-based erosion index, and bluff proximity. A logistic model developed using the three successful predictors for Amity Creek watershed was largely unsuccessful. A threshold-based model including the three successful predictors (stream power-based erosion index, bluff proximity, and bedrock exposure) was 70% accurate for predicting erosion hotspots along Amity Creek. The limited predictive power of the models stemmed in part from differences in locations of erosion hotspots in a single large-scale flood event and long-term erosion hotspots. The inability to predict site-specific characteristics like large woody debris or vegetation patterns makes predicting erosion hotspots in a given event very difficult. A field dataset including long-term erosion data may improve the model significantly. This model also requires high resolution bedrock exposure data which may limit its application to other North Shore streams.”
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    An Integrated Approach to Assessing Multiple Stressors for Coastal Lake Superior
    (2011) Niemi, Gerald J; Reavie, Euan; Peterson, Gregory S; Kelly, John R; Johnston, Carol A; Johnson, Lucinda B; Howe, Robert W; Host, George; Hollenhorst, Thomas; Danz, Nick; Ciborowski, Jan H; Brown, Terry; Brady, Valerie; Axler, Richard P
    This peer-reviewed article summarizes research conducted under the Great Lakes Environmental Indicators (GLEI) project initiated by the authors in 2001. The authors assessed the status of Lake Superior’s coastal ecosystem relative to over 200 environmental variables collected from GIS data sets for the enture US Great Lakes basin. These were assessed using gradients including atmosphereic deposition, agriculture, human population and development, land cover, point source pollution, soils and a cumulative stress index. Relationships of biological assemblages of birds, diatoms, fish and invertebrates, wetland plants, soils and stable isotopes to these gradients were then assessed. Key findings are extracted and reproduced below. Biological indicators can be used both to estimate ecological condition and to suggest plausible causes of ecosystem degradation across the U.S. Great Lakes coastal region. Here we use data on breeding bird, diatom, fish, invertebrate, and wetland plant communities to develop robust indicators of ecological condition of the U.S. Lake Superior coastal zone. Sites were selected as part of a larger, stratified random design for the entire U.S. Great Lakes coastal region, covering gradients of anthropogenic stress defined by over 200 stressor variables (e.g. agriculture, altered land cover, human populations, and point source pollution). A total of 89 locations in Lake Superior were sampled between 2001 and 2004 including 31 sites for stable isotope analysis of benthic macroinvertebrates, 62 sites for birds, 35 for diatoms, 32 for fish and macroinvertebrates, and 26 for wetland vegetation. A relationship between watershed disturbance metrics and 15N levels in coastal macroinvertebrates confirmed that watershed-based stressor gradients are expressed across Lake Superior’s coastal ecosystems, increasing confidence in ascribing causes of biological responses to some landscape activities. Several landscape metrics in particular—agriculture, urbanization, human population density, and road density—strongly influenced the responses of indicator species assemblages. Conditions were generally good in Lake Superior, but in some areas watershed stressors produced degraded conditions that were similar to those in the southern and eastern U.S. Great Lakes. The following indicators were developed based on biotic responses to stress in Lake Superior in the context of all the Great Lakes: (1) an index of ecological condition for breeding bird communities, (2) diatom-based nutrient and solids indicators, (3) fish and macroinvertebrate indicators for coastal wetlands, and (4) a non-metric multidimensional scaling for wetland plants corresponding to a cumulative stress index. These biotic measures serve as useful indicators of the ecological condition of the Lake Superior coast; collectively, they provide a baseline assessment of selected biological conditions for the U.S. Lake Superior coastal region and prescribe a means to detect change over time.” Key points: “In general, the U.S. Great Lakes coastal region of Lake Superior shows greater overall stress in the southern regions compared with relatively low overall stress in the northern regions. These patterns are primarily due to agricultural land use, higher human population densities, and point sources in the eastern and western portions on the south shore, while the north shore at the western end of Lake Superior is primarily forested with relatively sparse human population densities. Coastal regions of Lake Superior can be found at each of the extremes of the disturbance gradients. This includes relatively pristine watersheds in the northern regions with low human population densities and little agriculture that contrast with regions of relatively high populations with industrial activity such as Duluth-Superior in Minnesota-Wisconsin and Sault Ste. Marie Michigan at the other end of the gradient. The U.S. Lake Superior coastal region varies widely in the degree of human-related stress; generally, levels of stress decrease from south to north but with considerable variation, especially along the southern shore due to local agricultural activity and the presence of several population and industrial centers. In spite of a lack of latitudinal variation, there is human-induced, watershed scale variability across the Lake Superior coast. Compared to the other Great Lakes, Lake Superior coastal fish communities had more generally intolerant fish and more turbidity intolerant fish. Coastal fish community composition reflected the higher levels of suspended solids associated with human alteration to watersheds. The most disturbed sites on Lake Superior had greater proportions of non-native species and fewer bottom-feeding taxa.
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    The Minnesota Regional Copper-Nickel Study 1976-1979, Volume 1: Executive Summary
    (1979) Minnesota Environmental Quality Board
    This is a comprehensive, clearly-written document summarizing potential biophysical and socioeconomic impacts of copper-nickel mining in Minnesota. Special attention is paid to impacts on water resources. Relevant sections are reproduced in their entirely below, not only for historical interest but because of predictive power. Summary: "The Minnesota Environmental Quality Board's Regional Copper-Nickel Study is a comprehensive technical examination of the environmental, social, and economic impacts associated with the potential development of copper-nickel sulfide mineral resources of the Duluth Complex in northeastern Minnesota. This executive summary of the 5 volume, 36 chapter report presents some of the major findings of the Study, but in order to get a complete picture of the complex issues associated with exploiting this valuable mineral resource, the entire document should be examined. In addition to this report over 180 technical reports, extensive environmental monitoring data files, special sample collections, and other information resources were compiled by the Study" (n.b. these documents were not reviewed as part of this current desk review). Consistent with directions from the Minnesota Legislature, the Regional Copper-Nickel Study presents technical findings but does not make policy recommendations based on these findings." "To allow for a discussion of the potential environmental and socio-economic effects of copper-nickel development, an area of approximately 2100 square miles was designated as the Regional Copper-Nickel Study Area (or simply, the Study Area). This area contains Virginia in the southwest corner and Ely in the northeast corner. The major copper-nickel deposits of interest occur along the Duluth Gabbro Contact, in a band three miles wide and fifty miles long (the Resource Area); however, additional deposits may extend beyond this band. The Water Quality Research Area, which includes the complete watersheds of 14 streams of interest, is shown in Figure 2. Waters north of the Laurentian Divide are part of the Rainey River Watershed, which includes a portion of the Boundary Waters Canoe Area, and whose waters eventually drain into Hudson Bay and the North Atlantic. Waters south of the Divide are a part of the St. Louis River Watershed which drains into Lake Superior and eventually into the Atlantic Ocean via the St. Lawrence River.” "Historically, the exploitation of base metal sulfide resources (such as copper-nickel resources) throughout the world has been accompanied by the significant degradation of the quality of water resources and the destruction of aquatic and terrestrial biota m the vicinity of such developments. Acid mine drainage, toxic heavy metals contamination, erosion, sedimentation, increased salinity, and other water pollution problems associated with mining were common. The nonferrous minerals smelting industry (principally copper, lead, and zinc) has also been a major source of manmade air pollutants. Until new technology has been developed to minimize many of these impacts, adverse impacts of past practices continue to cause close scrutiny of new mining proposals.” Water Quantity (Volume 3-Chapter 4). "Surface water is abundant in the Water Research Study Area due to high surface runoff. Average annual runoff in the region is about 10 inches. The Water Research Study Area includes 360 lakes larger than 10 acres, in addition to 14 small rivers and streams. Nearly 75 percent of the Water Research Study Area, and an even larger proportion of the surface water is north of the Laurentian Divide. North of the Divide, lakes are more numerous and larger, and the volume of stream flow is greater because a larger area is being drained. Because some of these waters are inside the BWCA, not all of the water north of the Divide is directly available for use. Annual average flow for 12 streams studied by the U.S. Geological Survey for the Study ranged from 23 to 1,027 cubic feet per second (cfs). High flow generally occurs after heavy precipitation and following the spring snowmelt. Average low flow for seven days is 2 to 186 cfs compared to an average high flow of 87 to 4,763 cfs. Ground water yield is generally low, limited by the low permeability of the Area's bedrock and the often shallow overlaying glacial deposits. Yields generally average less than 5 gallons/minute. Three relatively small areas have high volume aquifers yielding up to 1,000 gallons/minute: the Embarrass Sand Plain, the Dunka River Sand Plain, and the local fractured and leached bedrock areas in the Biwabik Iron Formation.” "Current industrial use of surface water is primarily for electric power generation. Mine-pit dewatering is the greatest groundwater use. At current levels, water use does not cause significant impacts on the region's water resources, although withdrawal from some streams must be reduced during low flow. Surface water, including some of the large on-channel lakes (e.g. Birch Lake), could supply large water users, al though storage may be required for certain streams. The Embarrass River Valley aquifer is the only identified groundwater source in surficial materials that could supply large water users.” Water Quality (Volume 3-Chapter 4). "Because of the large number of streams and lakes in the Study Area, the value of high quality water which supports a significant recreational and wilderness resource of the state and the nation, and the recognized historic relationship between base-metal mining and water pollution, a major responsibility of the Regional Copper-Nickel Study was the collection of baseline surface and ground water quality data (note: data tables and figures and not reproduced). "The quality of the region's water resources is generally very good except for several streams with watersheds affected by extensive taconite mining activities, and for groundwater either from glacial till or wells near the Duluth Gabbro Complex sulfide mineralization. Streams draining largely undisturbed watersheds can be described as containing soft water, having low alkalinity, low total dissolved solids, low nutrients, high color, very low trace metals concentrations, and low fecal coliform counts.” "Streams draining disturbed watersheds (Partridge, Embarrass, Upper St. Louis rivers south of the Laurentian Divide, and the lower Dunka River and Unnamed Creek north of the Divide) would be considered to contain moderately hard to hard waters, with elevated dissolved solids, nutrients, and trace metals concentrations relative to undisturbed watersheds. Color and fecal coliform concentrations are not significantly different in the two watershed classifications. Most water quality parameters tend to be much less variable in undisturbed streams as compared to disturbed streams. The quality of the lakes studied is variable though similar to the quality of undisturbed streams. However, lake values may be less meaningful for determining baseline concentrations than values in streams because of the limited number of samples.” "In general, concentrations of most chemical constituents are higher in the groundwater than in streams and lakes of the area. Groundwater from wells proximate to the Duluth Gabbro contact were found to have higher levels of trace metals and sulfate than wells located at a distance from the contact. Phosphorus and nitrogen are the major nutrients in aquatic systems. Concentrations of both nutrients in study streams are at the low end of the range of values for U.S. streams. Variations in nutrient levels exhibited no clear trends between headwater and downstream stations or between small and large watersheds. Highest concentrations of nitrogen were found downstream from mining operations where blasting compounds containing nitrogen are used. In lakes, nutrient parameters are closely associated with the activities of aquatic organisms. Higher levels of available nutrients encourage greater biological productivity. The ratio of nitrogen (N) to phosphorus (p) can be used to evaluate which of these nutrients limits algal productivity. Lakes with a N:P ratio greater than 14 are considered to be limited by phosphorus. Within the Study Area, median N:P ratios ranged from 14 to 60, and half the lakes studied had ratios greater than 25. Overall concentrations of both nutrients were at the low end. Median values for both nutrients were higher south of the Laurentian Divide than north of it. The most productive lakes were all headwater lakes, usually shallow, and surrounded by extensive bog and marsh areas.” "A major concern related to copper-nickel development is levels of heavy metals in surface waters. At background stream stations, copper, nickel, and zinc levels are generally very low, with median concentrations of copper and zinc in the range of 1-2 ug/liter and nickel around 1 ug/liter. Other trace metals of biological importance (As, Cd, Co, Hg, and Pb) have median concentrations significantly below 1 ug/liter. There is little variability in the levels of arsenic, cobalt, cadmium, mercury, titanium, selenium, and silver across almost all surface waters monitored. As expected, iron, manganese, copper, nickel, zinc, lead, fluoride, and chromium concentrations in streams are significantly higher in disturbed watersheds than in undisturbed areas. The dynamics of metals in lakes are somewhat different from those in streams because the large surface area of bottom sediments with their varying oxidation reduction potentials complicates the picture. Lakes can act as sinks for metals (as is the case with iron at Colby Lake) so that the chemistry of out flowing waters is different from that of inflowing waters. Large lakes may exhibit variability in the concentration of metals within the lake itself (as is the case with nickel in Birch Lake). Similar to streams, iron,' aluminum, and manganese were the most elevated metals in the Study Area lakes. Copper, nickel, and zinc have median levels between 1 and 2 ug/l, whereas arsenic, cobalt, and lead have median levels of 0.6,0.4, and 0.4 ug/l, respectively. Cadmium levels were an order of magnitude (10 times) lower than those for arsenic, cobalt, and lead. The greatest variabilities in concentrations were exhibited by manganese, zinc, cadmium, and aluminum, with arsenic the least variable metal.” "Water quality standards and criteria for many parameters have been adopted or are proposed for adoption by the Minnesota Pollution Control Agency or the U.S. Environmental Protection Agency (EPA). Recommended levels for cadmium, color, copper, iron, lead, manganese, mercury, nickel, nitrogen (as N02 + N03), pH, specific conductance, sulfate, and zinc were exceeded in one or more of the streams monitored. In most cases, these elevated levels occurred in Unnamed Creek, which is affected by mining (see discussion of Unnamed Creek below). The region's streams and lakes have naturally high color levels.” "All streams which were monitored exceeded the EPA water quality criteria for mercury (0.05 ug/liter). The median concentration of mercury for all streams monitored was 0.08 ug/liter with a range of 0.01-0.6 ug/liter. Standards for mercury are based on U.S. Food and Drug Administration guidelines for edible fish. High mercury levels have been found in fish from some of the area's lakes and streams. Because acid precipitation is a potential problem, the quality of precipitation in the Study Area was monitored at several sites. Seventy-seven percent of the samples (41) had a pH less than 5.7, which means that most of the precipitation measured can be considered acidic. Fifty percent of the samples had a pH of 3.6 to 4.4. The geometric mean pH of samples collected in the area was 4.6. These values are comparable to, or even less than values measured in areas of the world where ecological damage has already occurred. Measurements by the Regional Study indicate that the present annual sulfate deposition rate (wet plus dry) across the Study Area is from 10 to 20 kg/ha/yr (9 to 18 lbs/ acre/yr). Atmospheric dispersion modeling indicates that regional sources of S02 are not major contributors to depressed acidity of precipitation and suIfate deposition in the region. This in turn indicates that out-state and out-of-state sources, possibly as far away as St. Louis, Chicago, and Ohio Valley areas, are likely the major cause of acid rain and sulfate deposition in northeastern Minnesota.” "If the patterns of increasingly acidic precipitation continue, it is likely that many of the poorly buffered small streams will have noticeable decreases in aquatic populations (such as fish) during and following spring melt.” "Stream systems are very sensitive because the flush of water from spring snowmelt can represent a majority of the water that the stream may carry through the whole year. Recovery from these episodes may be expected to be fairly rapid (i.e. within months) unless or until the sources of recolonizing organisms are themselves affected (i.e. well buffered lakes or large unaffected streams). Recovery would be very slow once the source areas are affected. The effects of acid precipitation on vegetation range from damage to leaves to increased susceptibility to disease and death (see Volume 4-Chapter 2). A direct causal relationship between acid precipitat ion and reduced forest productivity measured by growth remains to be demonstrated. However, research suggests that acid precipitation is probably a cause of reduced forest growth. Because acidic precipitation and sulfate deposition are primarily related to air pollution sources outside the region and are projected to increase significantly over the next 10-20 years, acidification may represent a serious threat to the ecosystems of northeastern Minnesota, even if copper-nickel development does not occur. Long-term changes in the aquatic communities are probably already underway due to the general decrease in the pH of precipitation and thereby of surface waters in the Study Area. Because the decrease in pH will likely be slow, measurement of biological effects would require intensive long-term monitoring. During this period of decreasing pH, the overall productivity and diversity of the aquatic communities can be expected to decrease.” "One crucial parameter that was monitored is the water's buffering capacity-- its ability to regulate pH changes due to acid inputs from atmospheric deposition or leaching. The resistance to pH change is a function of the type of acid input (i.e. strong or weak acids) and the type of chemical components in the receiving water which can assimilate or bind the hydrogen ions. Calcite saturation indices (csr) were calculated for all study lakes and 30 lakes in the BWCA to measure this buffering capacity. Lakes with a csr less than 3.0 are well buffered; lakes with an index between 3.0 and 5.0 are poorly buffered with the possibility that acidification may already be occurring; and an index over 5.0 indicates lakes with little or no buffering ability and a strong possibility that severe acidification has already occurred.” "The poorly buffered lakes in the region are with few exceptions headwater lakes. This may be explained by the fact that buffering is a function not only of atmospheric processes, but also of watershed geology. The chemistry of headwater lakes often reflects that of precipitation, with watershed contributions to lake chemistry assuming secondary importance. As one proceeds from headwater to downstream lakes 1.U the Study Area, the ability of the lakes to assimilate hydrogen ions generally increases. Headwater areas of the region (which include half the BWCA lakes studied) are generally not well buffered and have limited capacities to assimilate existing acid loadings. Some of the lakes sampled during the study which may be the earliest to be affected by acidic precipitation include: Clearwater, August, Turtle, One, Greenwood, Perch, and Long lakes. These lakes have Calcite Saturation Indices above 3.0. Headwater streams are generally poorly buffered, in part because their water quality is also dependent upon the quality of precipitation.” "Two unique water quality conditions have been identified in the Study Area which are directly related to the presence of copper-nickel sulfide mineralization. In one of these cases, human disturbance of this mineralization has accelerated the chemical/physical weathering (leaching) of this material. Filson Creek, located in the northeastern part of the Study Area adjacent to the BWCA, flows naturally over exposed mineralized gabbro. Within the Filson Creek watershed, total concentrations of copper and nickel 10 the year 1977 generally increased from headwater locations to Filson's point of discharge into the South Kawishiwi River. Total nickel concentrations measured in Filson's headwaters were, except for one sample, less than 1 ug/liter, while the mean nickel concentration near the mouth of the watershed was 3 to 5 ug/liter. The smaller copper and nickel concentrations at Filson Creek headwater locations reflect the smaller percentage of sulfide bearing material in the till and the greater distance from the mineralized contact zone. The elevated metal values measured in Filson Creek may not be completely due to natural weathering of sulfide minerals. Prior to 1977, considerable mineral exploration activities occurred, including the taking of a bulk surface mineral sample. Subsequently, a small volume surface discharge was discovered at the foot of the bulk sample site with elevated metals levels (10,000 to 13,000 ug/l Ni, 360 to 1,000 ug/l Cu, and 190 to 5300 ug/l 2n). This discharge enters a small tributary of Filson Creek and raises the nickel and copper concentrations by about 9 ug/l and 5 ug/l, respectively. This change in trace metal concentrations is not sufficient to result in measureable biological changes in the Creek.” "In the other unique case, a small watershed (Unnamed Creek) which drains into Birch Lake at Bob Bay contains several wastepiles containing mineralized gabbro from a nearby taconite mining operation (Erie Mining Company's Dunka Pit). The large surface area of the waste rock facilitates the chemical weathering process. Surface seeps containing elevated concentrations of sulfates and trace metals (especially nickel) are present. The seeps flow into Unnamed Creek where the influence of this disturbance on water quality is obvious. Median nickel levels in Unnamed Creek were 85 ug/l, compared to 1 ug/l in undisturbed streams (Table 4). Extensive field studies conducted in this watershed have demonstrated that extensive disturbance of the mineralized gabbro without corrective mitigation can result in significant water quality degradation. The magnitude of the potential impacts in this specific case is largely mitigated by natural chemical processes involving adsorption, chemical complexation, and precipitation due largely to the presence of a bog in the watershed. The metal concentrations measured at Bob Bay would be significantly higher if not for the effect of the bog. However, the bog is showing some signs of stress and its beneficial effect on water quality may not continue for long.” Environmental Impact Assessment: Water Use "Water is required in significant quantities as a transport medium for the ore during concentration and for tailing disposal. Additional water is required in the smelting and refining phase for cooling and other purposes. Precipitation partially offsets the major water losses coming from evaporation losses coming from evaporation from tailing basins and water trapped between particles in tailing basins. However, fresh makeup water (estimated to average 0.76-1 b ill ion gallons per year) will be required for all three integrated copper-nickel development models (Volume 2-Chapter 5). Water requirements will vary significantly on a seasonal and annual basis.” "A good water management system is designed to manage and store runoff and seepage on the site (around waste piles, tailing basins, and elsewhere). The specific site and the design of the system will determine whether periodic discharges of waste water will be necessary during periods of above average precipitation. Because of the fairly continuous demand for water and the varying supply of water in lakes and streams in the area, it is estimated that significant water storage (10,000 to 15,000 acre-feet) will be necessary for use during dry periods. This water storage could be supplied by the tailing basin and/or reservoirs. Storage requirements for makeup water supply and containment of polluted water could increase land requirements by 2,000 to 3,000 acres.” "Increased demand for water could become a source of conflict if waters tributary to the BWCA are appropriated for copper-nickel development and if the waters are also diverted for taconite development, such as the Upper St. Louis and Partridge river watersheds. These issues could be considered prior to issuance of a DNR permit which s required for water appropriation. However, if both taconite expansion and copper-nickel development proceed in northeastern Minnesota, a regional comprehensive water management plan and perhaps a cooperative industrial water supply system may need to be considered.” "Quality of tailing water during the operating phase 1S primarily controlled by the concentrating process water. This water is largely recycled and should not be a significant heavy metal pollution source. Seepage can also be collected and recycled if necessary. Elevated levels could occur during the post-operating phase or if more sulfides are deposited in the basin than projected. Local variation in ore mineralogy could result in pockets of tailing having much higher sulfide concentrations which could cause localized leaching problems. Due to limited research on tailing water quality, the unknowns involving the quality of runoff and seepage from a tailing basin are greater than those associated with waste rock piles and create another source of significant risk involving future copper-nickel water management decisions.” "Mine dewatering can also contribute heavy metals, the amount depending upon the quantity of water from precipitation and groundwater sources that must be removed and the metal sulfide content of the mine. No precise conclusions can be made about expected levels of heavy metal release from this source. Smelter and refinery waste water 1S not as significant an issue as waste piles. Production of these waste waters 1S dependent on facility design and operation, and there appears to be no significant post-operational concerns.” "Treatment methods are available to reduce heavy metal concentrations in these waste waters to levels where biological impacts are not expected. Effluent water quality models for impact assessment purposes were developed (Volume 3-Chapter 4) based on the best data available from field and laboratory results, but this information is not sufficient to allow precise statements on the quality of water produced from copper-nickel water pollution sources or on the effectiveness of reclamation practices for specific effluent parameters (e.g. suIfates, trace metaIs, processing reagents). For example, information strongly suggests that runoff from waste piles will contain elevated heavy metals and dissolved solids concentrations as compared to background surface water quality. Heavy metals could be 500 to several thousand times higher than natural water quality levels and sulfates could be ten to several hundred times higher.” "These models reflect an assumption that acid mine drainage problems will not occur because of the natural buffering capacity of the waste materials. If this assumption IS wrong and acid conditions do occur, then projections of water pollution will be significantly underestimated because, as the pH becomes acid, there are dramatic increases in the amount of heavy metals leached from the waste significantly affects whether a metal will be in an aqueous phase (and highly mobile) or in a solid phase.” "Treatment of large amounts of runoff to remove heavy metals to existing background levels may be prohibitively expensive. Additional research is necessary in order to make accurate predictions about effluent quality and the effectiveness of various controls. Cost and time constraints will likely require that the first mining activities proceed without this predictive capability.” Heavy metals have adverse effects on aquatic organisms, the extent depending upon the type of metal (or combination of metals), organism tolerance, and water chemistry (Volume 4-Chapter 1). For example, cold water fisheries are generally more susceptible to heavy metal pollution than warm water fisheries." No mention is made of impacts on wild rice stands.
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    Minnesota’s County Land Management A Unique Ownership Providing Diverse Benefits
    (2004) Fernholz, Kathryn; Bowyer, Jim; Howe, Jeff; Bratkovich, Steve; Frank, Matt
    This report concerns public and private forests in northeastern Minnesota. It does not specifically deal with water resources except to note the following: “Ideally, forest management for restoration, forest health, wildlife habitat, and biodiversity benefits should be continued even when market prices are low. Delaying management because of poor market conditions may result in declines in forest health due to insect or disease issues being left untreated or other changes that can diminish water quality protections and important wildlife habitats. Delayed harvests and associated silvicultural treatments can also negatively impact recreation and other social benefits benefits.” Also, under the topic of water quality, the report advocates utilizing improved inventory data (forest cover types, species, age, native plant communities, soils, etc.) to evaluate current conditions in known impaired watersheds and develop long-term plans. Other key points are extracted and summarized below. “Minnesota is among a small number of states that have county managed forest land. This report explores the history and current contribution of Minnesota’s county-managed forest lands, including the diverse social, economic and environmental benefits they provide. "Minnesota’s “county forests” originated during the 1930s. During the era of the Great Depression, the state was challenged with the consequences of unsustainable farming practices, cut-and-run logging, bankrupt homesteads and devastating wildfires. Thousands of acres of land became tax delinquent as owners could not, or for a variety of reasons would not, pay their taxes. These lands were labeled "worthless” and became the "lands nobody wanted." In 1935, in an attempt to return the tax delinquent acres to private ownership, the Minnesota Legislature provided for forfeiture of these lands to local counties, thereby enabling their resale to others. By this time, about eight million acres of tax-forfeited land had accumulated. Delinquency and subsequent forfeiture continued at a high level into the 1960s. As the demand for land remained low and many of the acres were not re-sold, the land continued to be the responsibility of the local county governments. Over time, the counties began to recognize opportunities to care for these lands in ways that could rebuild the soils, restore forest habitats, enhance local communities and create long-term economic returns. Counties found they could manage the lands to grow trees on a sustained-yield basis and the returns from this management could improve the environment and also provide jobs, revenues to meet public needs, and other benefits. In 1979, the Minnesota Legislature enacted "Payment In Lieu of Tax (PILT) Legislation" that encouraged retention of the tax-forfeited land by the local public land managers. The law provided compensation to local taxing districts (i.e., counties) for retaining land that represented a loss of tax base. These payments remain important for sustaining the needs of local communities and ensuring continual stewardship of natural resources. Counties do not share a uniform plan or prescription for management of forests. Each county manages its woodlands independently. Local interests, including the common use of citizen advisory committees, inform management decisions and county staff and boards administer the lands. In recent years, county land departments have provided leadership in several areas linked to responsible forest management. These include third-party forest certification, forest-based carbon offset opportunities, motorized recreation management, and forest inventory needs. Most of the benefits and services of county lands are not easily quantified and many are provided at no direct cost, which makes estimating their value difficult. However, related research has explored the potential value of these types of benefits. 98% of the lands each year are providing undisturbed habitat, water quality and recreation benefits. Minnesota’s county forest lands, unwanted in the 1930s, now provide unique opportunities to address local community needs, contribute to resolution of emerging issues, and demonstrate responsible forestry. County land managers are currently challenged by a number of significant threats, including invasive species, forest health concerns, and reduced markets. At the same time, the management of county forests is subjected to political pressures, shrinking local and state budgets, and competing interests. Minnesota is one of a few states that has county-managed lands within the public land category. These county lands can be described as Minnesota’s “community-forests” due to the important social, economic and ecological services they provide as public lands under local control. The county-managed lands provide a unique type of land ownership within the context of public forest lands in the state. To ensure the delivery of the services and benefits of these lands for future generations continued investment and statewide commitment to their responsible care and management is required.”
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    Northeast Minnesota Wetland Mitigation Inventory and Assessment, Phase 1: Final Inventory Report
    (2009) Barr Engineering
    "The Northeast Minnesota Wetland Mitigation Inventory and Assessment Project is a two phase project to identify potential wetland mitigation opportunities located in northeastern Minnesota and analyze those opportunities to develop goals and priorities. Both phases of the project are designed to only address the technical aspects of wetland mitigation, analysis of policy related issues are beyond the scope of this project. Phase 1 is designed to identify potential wetland mitigation sites and inventory and assess mineland wetlands and Phase 2 will assess siting recommendations based on priorities, including but not limited to: mitigation types/methods, water quality, proximity to impaired waters, technical feasibility and wetland functions. The wetland mitigation inventory has been conducted with a watershed emphasis to identify watershed and water quality improvement opportunities within the study area. Baseline data was collected to develop an initial understanding of the existing wetland resources and a regional assessment was conducted of potential opportunities for wetland restoration, enhancement, preservation and creation. The intent of this study is to use existing data to identify potential wetland mitigation opportunities and verify and assess the technical feasibility of a limited sampling of sites in the field. Based on the technical committee and stakeholder feedback, four general categories of mitigation methods were evaluated: wetland restoration, preservation, enhancement, and creation. A GIS model analysis was conducted utilizing existing data sources to identify potential wetland mitigation opportunities within the project area. Potential wetland mitigation sites were identified throughout the study area... Approximately three percent of the potential mitigation opportunities spread across 17 of the 18 counties have been evaluated in the field to determine the accuracy of the modeling methods and to sample landowner interest. Northeastern Minnesota faces unique challenges for wetland mitigation due to several factors, namely: • The presence of extensive wetland resources, • Approximately 57 percent of land is in public (federal and state) and tribal ownership, • Few established wetland mitigation banks currently exist, • A perceived lack of traditional wetland mitigation opportunities exist, and • The need for approximately 550 acres of wetland mitigation is projected annually in the foreseeable future. An ad hoc committee formulated a strategy which included five main recommendations: • Conduct a regional wetland mitigation inventory to determine the availability of wetland mitigation opportunities in the region. • Conduct a regional mitigation siting study to summarize the results of the regional inventory and help to streamline mitigation planning in the region. • Develop a northeastern Minnesota wetland bank cooperative – a third party to coordinate, promote, and develop wetland banking within the region. • Compile up-to-date knowledge or research on non-traditional mitigation methods • Update the National Wetlands Inventory for northeastern Minnesota Following discussions with northeastern Minnesota legislators, a legislative bill was introduced to fund the regional wetland mitigation inventory and the mitigation siting study. In 2007, after receiving stakeholders’ testimony the Legislature funded the inventory and the siting study recommendations through a two-year appropriation to the Board of Water and Soil Resources (BWSR) for 2008-2009."
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    Outdoor Recreation in the Regional Copper-Nickel Study Area
    (1978) Webb, Sara
    This 35-year old study primarily discusses non-Indian recreational use of public and private lands in the Cu-Ni region of Minnesota’s Iron Range. This recreation-oriented study does not specifically note Native American use of study area lands except for very indirect references to gill-netting and wild ricing. It has a strong focus on human use of water resources in the region, but does not investigate potential impacts of increased recreational use, mining, or other anthropogenic activities with potential to affect condition of these resources. The study abstract and key segments are extracted and reproduced below. Abstract: “Geographic patters of outdoor recreational use in the Copper-Nickel Study Area were investigated as part of a study of potential impacts of copper-nickel mining in Northeastern Minnesota. With the objective of characterizing patterns of recreational use of facilities, water bodies and public lands, interviews were held with thirteen land use managers and others familiar with the study area. Findings from this interview program together with past recreation research provide a data base on existing recreational use necessary for to impact analysis. Numerous public and private recreation facilities are located along Study Area lakes and streams. Outside facilities, public and some private lands are used for diverse land-based activities when afforded road, trail, or surrogate trail access; old logging roads serve this function in the most heavily-used areas, although some activities such as and winter camping rarely occur in recently logged zones. Dense settlement and lowland bogs restrict access by most land-oriented recreationists. Water-based recreation is concentrated on large, deep lakes in the Study Area's northern half. Part of the Boundary Waters Canoe Area (BWCA), a national wilderness area, lies within the Study Area's north boundary. Canoeists and fishermen use BWCA lakes heavily. Dozens of smaller lakes throughout the Study Area serve Iess diverse but sometimes more intensive recreation functions. Only a few lakes lack any recreational use; most are quite small and lack access or recreation resources. Most Study Area streams have limited recreational use because of low water levels, with the exception of two rivers, the Kawishiwi and the St. Louis River. Three general types of outdoor recreation can be distinguished: facility -based recreation), dispersed land-based recreation, and water-based recreation. To spare the time and expense of primary field surveys, a program of interviews with thirteen land managers such as conservation officers and foresters was designed, using Spradley's interview method. Key points: ‘Outdoor recreation in all forms is dependent upon access: roads, trails, and public lands. The region is covered with an extensive network of land management units at various levels. Land-based recreation use relates closely to the area's logging history and logging roads. Lake, stream, road and facility use must be carefully evaluated before siting decisions about mining and recreational use are finalized.’
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    Regional, Watershed, and Site-Specific Environmental Influences on Fish Assemblage Structure and Function in Western Lake Superior Tributaries
    (2005) Brazner, John; Tanner, Danny K; Detenbeck, Naomi E; Batterman, Sharon L; Stark, Stacey L; Jagger, Leslie A; Snarski, Virginia M
    This report assesses the impact of human activities and forest fragmentation on fish communities in the western Lake Superior basin. Human-induced activities noted in the report included temperature changes, siltation, erosion, forest cover and forest manipulation, and invasive species. Specific results are reproduced below. “The relative importance of regional, watershed, and in-stream environmental factors on fish assemblage structure and function was investigated in western Lake Superior tributaries. We selected 48 second- and third-order watersheds from two hydrogeomorphic regions to examine fish assemblage response to differences in forest fragmentation, watershed storage, and a number of other watershed, riparian, and in-stream habitat conditions. Although a variety of regional, fragmentation, and storage-related factors had significant influences on the fish assemblages, water temperature appeared to be the single most important environmental factor. We found lower water temperatures and trout–sculpin assemblages at lower fragmentation sites and higher temperatures and minnow–sucker–darter assemblages as storage increased. Factors related to riparian shading and flow separated brook trout streams from brown trout (Salmo trutta) – rainbow trout (Oncorhynchus mykiss) streams. Functionally, fish assemblages at lower fragmentation sites were dominated by cold-water fishes that had low silt tolerance and preferred moderate current speeds, while fishes with higher silt tolerances, warmer temperature preferences, and weaker sustained swimming capabilities were most common at higher storage sites. Our results suggest that site-specific environmental conditions are highly dependent on regional- and watershed-scale characters and that a combination of these factors operates in concert to influence the structure and function of stream fish assemblages. Key points: This study was completed within 160 km of Duluth, Minnesota, in the Northern Lakes and Forests Ecoregion and within two ecological units, the North Shore Highlands (north shore streams) and the Lake Superior Clay Plain (south shore streams)which provided excellent contrast in hydrogeomorphic types. Functionally, south shore fishes tended to be silt-dwelling, trophic generalists with slow current preferences and a tendency towards nest-guarding spawning behavior. North shore fishes tended to be single-bout spawners with fast current preferences. From a management perspective, our results suggest that both timber management and wetland restoration or degradation decisions will need to be considered by resource managers when fish community health is a concern. For example, increasing percentages of mature forest cover should allow for salmonid–sculpin assemblages to become more prevalent in streams with the potential for cool or cold waters. Similarly, increased wetland cover should allow for a greater predominance of healthy warmwater fish assemblages assuming that other landscape features are not too badly degraded. By understanding the species structure and functional character of an assemblage and its relationship to landscape features, managers should be able to make at least a rough assessment of watershed condition. Lacking fish data, it might be easier to simply characterize forest cover and storage as a first step in identifying which watersheds likely contain streams that are degraded. Our results suggest that although in-stream habitat rehabilitation should continue to be used an important tool to improve biological conditions in streams, restoration efforts will have greater success if the potential interactions with landscape conditions are factored into the decision-making process. In some situations, manipulation of forest cover or watershed storage may have a greater impact on fish assemblage integrity than in-stream habitat improvements.”
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    Scale-dependent Response by Breeding Songbirds to Residential Development Along Lake Superior
    (2010) Ford, Michelle T; Flaspohler, David J
    This is the first study to examine the influence of Great Lakes shoreline residential development on forest breeding bird communities on any of the Great Lakes. This study took place near Houghton Michigan but may be relevant for Minnesota’s coastal areas given that migrating birds utilize common flyways, and their habitat and movements have trans-boundary characteristics. For these reasons it is included in the study. The abstract and key points are reproduced below. Abstract: “We examined the influence of shoreline residential development on breeding bird communities along forested portions of Lake Superior and hypothesized that anthropogenic changes related to housing development would alter bird community structure compared to areas without human development. We used point counts to compare relative abundance of bird species in relation to residential development at coarse (along 1 km shoreline stretches with and without housing/cottage development) and fine (developed and undeveloped sides of a shoreline access road) spatial scales during the 2005 breeding season. More species had development related differences in abundance at the finer-scale analysis than at the coarse scale. American Crows and American Robins were more abundant on the developed, shoreline side of shoreline access roads. Red-breasted Nuthatches, Blackthroated Green Warblers, and Red-eyed Vireos were more abundant on the undeveloped, inland side of shoreline access roads. Several species were detected exclusively in developed or undeveloped forest areas. The pattern of development-related differences in relative abundance of bird species depended on the scale at which data were analyzed, suggesting that many species may respond to habitat differences within the 100 m scale quite distinct from how they respond to differences at the scale of thousands of meters.”