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Duluth’s Storm Sewers

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

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Duluth’s Storm Sewers

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  1. Duluth’s Storm Sewers Chris Kleist

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

  3. Background • Ely, MN • Outdoors • Guiding • Stormwater and Wastewater Industry

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

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

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

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

  8. Stormwater Basics • Rainwater and snowmelt • Impervious surface • Pollution sources • MEP

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

  10. Duluth Stormwater Program • Cleaning • Maintenance • Inspection • Plan review • Technical assistance

  11. Storm Sewer Challenges • Trout streams • Pollution • Sediment • Temperature • DNR • Maintenance • Fish passage

  12. Storm Sewer Challenges • Volume Control • Infiltration • Rate control • Water Quality

  13. Storm Sewer Challenges • Budget • Old system • Increasing regulations • MS4 • TMDL • Non-Degradation

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