Stormwater Planning Initiative Project – Stormwater Management Planning Guide and Landowner-friendly IMS website tool

Abstract

Individual landowners in rapidly growing areas of the North Shore Community are increasingly required to create stormwater management plans (SMPs) prior to building. Planning development with stormwater runoff in mind is particularly important on the North Shore of Lake Superior, characterized by shallow clay-rich soils over bedrock, steep slopes, and delicate wetland complexes. While numerous organizations exist with pieces of the information required to complete a SMP, the process of collecting expertise from multiple agencies is daunting for landowners. Duluth Township recognized the environmental importance of stormwater planning by passing new zoning ordinances mandating stormwater planning in some land use zones. However, they recognized the difficulty that landowners face in creating a SMP and are committed to finding solutions. The objective of this project was to connect Duluth Township landowners to tools and resources necessary to complete a Stormwater Management Plan for their property. This pilot project features development of a user friendly Internet Map Server (IMS) tool that allows landowners to easily generate working base maps of their property. To date, IMS website tools have been largely developed by GIS professionals who are familiar with the GIS interface. When the general public tries to utilize these same tools, they typically become frustrated with the complexities of these programs, and cannot obtain the valuable information they need. This project was unique in that it was driven by extensive landowner input before, during, and after development to ensure that the tools developed achieved our objectives. Township administrators were also involved in development of the IMS tool and companion step-by-step guide so that the resulting landowner SMPs satisfied the regulatory and reporting requirements of the township. With the user-friendly IMS interface, the landowner is able to easily obtain base maps of their property containing multiple layers of the best existing data, including aerial photographs, topography, and wetlands for developing the SMP's required by the Duluth Township zoning ordinance. While there are resolution limitations to the existing wetland data, the website guides landowners on how to elaborate on this base layer of data as they conduct a site evaluation of their property. For instance, the website illustrates how to identify a small unmapped wetland and add these features to the base map. While the SMP Guide and IMS mapping tool was specifically designed and tested on Duluth Township, the project serves as a model template easily expanded to other townships along the North Shore.