Regulations require that stormwater pollution prevention plans be developed for construction activities that disturb
an area that is equal to or greater than one acre. Different strategies, including a combination of practices, can be
used to develop these plans. The WATER model was a tool developed from a previous project to assess the
effectiveness of different on-site sediment control practices. This model is expanded in this study to consider offsite
practices, to include processes at the watershed scale, and to allow spatial data sets to be integrated into the
simulation framework. Routines to simulate the impact of off-site practices of rock check dams, vegetative filters,
and detention ponds are added to the WATER model. The detention pond model has been modified to allow rock
and gravel infiltration filters to be included as an off-site practice. Two different algorithms are used: (1) the
Protocol Method based purely on empirical data and (2) the Process-Based Method using process-based
relationships developed for porous media flow.
Wilson, Bruce N.; Sheshukov, Aleksey; Mendez, Aida.
Design Tool for Controlling Runoff and Sediment from Highway Construction.
Minnesota Department of Transportation.
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