Duluth’s Storm Sewers Chris Kleist. Overview My background About Duluth Storm sewer 101 June flood Flooding issues Considerations.

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Presentation transcript:

Duluth’s Storm Sewers Chris Kleist

Overview My background About Duluth Storm sewer 101 June flood Flooding issues Considerations

Background Ely, MN Outdoors Guiding Stormwater and Wastewater Industry

Today Program Coordinator - Stormwater MS4 Permit Compliance Duluth’s Utilities

Duluth 26 miles long 883 feet elevation 431 miles storm sewer pipe –12,000 catch basins –5600 manholes –100+ miles of ditching

Duluth 26 miles long 883 feet elevation 431 miles storm sewer pipe –12,000 catch basins –5600 manholes –100+ miles of ditching

MS4 Program Stormwater NOT treated Series of Minimum Control Measures and Best Management Practices Education Illicit discharge Inspections Good housekeeping

Stormwater Basics Rainwater and snowmelt Impervious surface Pollution sources MEP

Duluth Stormwater Program Illicit Discharge Stormwater Billing Best Management Practices (BMPs) –Structural –Non-structural Runoff, erosion, and sediment issues

Duluth Stormwater Program Cleaning Maintenance Inspection Plan review Technical assistance

Storm Sewer Challenges Trout streams –Pollution Sediment Temperature –DNR Maintenance Fish passage

Storm Sewer Challenges Volume Control –Infiltration –Rate control –Water Quality

Storm Sewer Challenges Budget Old system Increasing regulations –MS4 –TMDL –Non-Degradation

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