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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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Presentation Transcript

Overview
Overview

  • My background

  • About Duluth

  • Storm sewer 101

  • June flood

  • Flooding issues

  • Considerations


Background
Background

  • Ely, MN

  • Outdoors

  • Guiding

  • Stormwater and Wastewater Industry


Today
Today

  • Program Coordinator - Stormwater

  • MS4 Permit Compliance

  • Duluth’s Utilities


Duluth
Duluth

  • 26 miles long

  • 883 feet elevation

  • 431 miles storm sewer pipe

    • 12,000 catch basins

    • 5600 manholes

    • 100+ miles of ditching


Duluth1
Duluth

  • 26 miles long

  • 883 feet elevation

  • 431 miles storm sewer pipe

    • 12,000 catch basins

    • 5600 manholes

    • 100+ miles of ditching


Ms4 program
MS4 Program

  • Stormwater NOT treated

  • Series of Minimum Control Measures and Best Management Practices

  • Education

  • Illicit discharge

  • Inspections

  • Good housekeeping


Stormwater basics
Stormwater Basics

  • Rainwater and snowmelt

  • Impervious surface

  • Pollution sources

  • MEP


Duluth stormwater program
Duluth Stormwater Program

  • Illicit Discharge

  • Stormwater Billing

  • Best Management Practices (BMPs)

    • Structural

    • Non-structural

  • Runoff, erosion, and sediment issues


Duluth stormwater program1
Duluth Stormwater Program

  • Cleaning

  • Maintenance

  • Inspection

  • Plan review

  • Technical assistance


Storm sewer challenges
Storm Sewer Challenges

  • Trout streams

    • Pollution

      • Sediment

      • Temperature

    • DNR

      • Maintenance

      • Fish passage


Storm sewer challenges1
Storm Sewer Challenges

  • Volume Control

    • Infiltration

    • Rate control

    • Water Quality


Storm sewer challenges2
Storm Sewer Challenges

  • Budget

  • Old system

  • Increasing regulations

    • MS4

    • TMDL

    • Non-Degradation


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