Flood muddies Lake Superior like never before Duluth News-Tribune (6/28) If you are wondering where all that sand, gravel, mud, debris, dirt and clay went after last week's torrential rain and flood in the Duluth area, just look out at Lake Superior.
Duluth Lakewalk sewage overflow tank gets to work Duluth News Tribune (4/17) The concrete bunker along the Lakewalk in downtown Duluth, Minn., did its job Monday by stopping 2.5 million gallons of a mix of raw sewage and rainwater from flowing into Lake Superior.
Technology could help cut sewer overflows South Bend Tribune (2/19) South Bend is turning to sensors and computers instead of pipes and tanks in hopes of keeping untreated wastewater from flowing into the St. Joseph River during heavy rain storms.
Ohio farms flush with manure The Columbus Dispatch (1/17) Agriculture officials are concerned that some farmers will spread manure on snow-covered, frozen fields this winter, where it may then be washed into nearby streams by sudden thaws or unseasonal rain.
COMMENTARY: Protect waterways from combined sewer overflows The Northwest Indiana Times (1/9) Indiana may need legislative assistance in finding innovative ways to fix issues contributing to the 24 billion gallons of combined untreated sewage and stormwater that is dumped annually into the Great Lakes.
Wet weather pollution includes stormwater runoff and combined sewer overflows. Stormwater runoff is the excess water that flows over land during and after a rainfall, which can cause flooding, erosion and pollution problems. Pollutants like coliform bacteria, heavy metals, nutrients, oil and grease, organic priority pollutants and suspended solids enter rivers and lakes during storms. Combined sewer overflows are structural devices on combined sewer systems that divert untreated sewage mixed with stormwater to tributary rivers or directly into the Great Lakes. Pollution from these sources degrades the water quality of these rivers and lakes.
General Resources GLRI Beach Sanitary Survey Projects U.S. Environmental Protection Agency (EPA), Great Lakes National Program Office (GLNPO) Multiple projects were funded by GLRI to assess sources of contamination affecting hundreds of Great Lakes beaches. Several of the projects also involve mitigating the contamination sources, including waterfowl management, replacing impervious pavement with permeable materials, and managing wet weather through green infrastructure approaches such as green roofs and rain gardens. EPA is monitoring the progress of these projects, and housing data collected with the sanitary surveys.
Programs in the Great Lakes U.S. Geological Survey (USGS) The USGS leads investigations that characterize storm-related water quantity and quality from selected CSO's, thus allowing the USGS to make better estimates of annual pollutant loads from CSO's to the Great Lakes.
SWMM: Storm Water Management Model U.S. Environmental Protection Agency (EPA) SWMM is a large, complex model capable of simulating the movement of precipitation and pollutants from the ground surface through pipe and channel networks, storage treatment units and finally to receiving waters.
Wet Weather Discharges U.S. Enviromental Protection Agency (EPA) The NPDES Support and Technical Assistance Branch provides regulatory and technical assistance to states and the regulated community in fulfilling their commitments under the NPDES program for wet weather discharges due to storm water, combined sewer overflow and sanitary sewer ovewflow.