Miller Hill Mall Comprehensive Stormwater Management Plan

The Miller Hill Mall, a regional shopping destination located in the City of Duluth, is the largest contiguous impervious site in the Miller Creek Watershed. The draft Total Maximum Daily Load Study identified heated stormwater runoff as a major contributor to the creek's excessive heat loading problem, which negatively impacts the creek's native brook trout population. The Mall, along with eight other entities in the watershed, was assigned a reduction goal as part of the effort to address the temperature problem in this creek.

This project will result in a Comprehensive Stormwater Management Plan for the Mall that will provide a detailed strategy for mitigating the impacts of thermally enriched stormwater runoff that comes off of the Mall's 66 acres of impervious surfaces, discharging into the creek. The stormwater Best Management Practices proposed in the plan will be prioritized based on pollutant mitigation potential, costs, and mall priorities. Installed stormwater management practices will serve as examples of effective temperature mitigation strategies for neighboring businesses and the thousands of people who visit the mall every week, all of whom can play a role in keeping Miller Creek cold enough to sustain its native brook trout population.