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DOAN BROOK WATERSHED PARTNERSHIP - PowerPoint PPT Presentation


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DOAN BROOK WATERSHED PARTNERSHIP. MISSION STATEMENT The Doan Brook Watershed Partnership…protecting, restoring and enhancing Doan Brook and its watershed for the benefit of future generations. FINANCIAL SUPPORT FROM… The three (3) watershed cities: Cleveland Heights Shaker Heights

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DOAN BROOK WATERSHED PARTNERSHIP


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    1. DOAN BROOK WATERSHED PARTNERSHIP

    2. MISSION STATEMENT The Doan Brook Watershed Partnership…protecting, restoring and enhancing Doan Brook and its watershed for the benefit of future generations.

    3. FINANCIAL SUPPORT FROM… • The three (3) watershed cities: • Cleveland Heights • Shaker Heights • Cleveland • Other non-profits (Sewer District, Nature Center, University Circle Inc.) • Family foundations • Individuals/families • Ohio EPA (Sec. 319 nonpoint source grant) • George Gund Foundation

    4. The Doan Brook and Its Watershed • Doan Brook is 8.4 miles long. • The watershed area is about 11.7 square miles (7,500 acres).

    5. The Parks... Site 14 Dredge Spoil Area Gordon Park/ Lake Front State Park Donated and developed 1882 to 1900 Rockefeller Park/Cultural Gardens Wade Park Shaker Lakes Parks Ambler Park Nature Center at Shaker Lakes Doan Brook Gorge

    6. Horseshoe Lake Dam from Downstream - 1900

    7. Lower Shaker Lake from Larchmere (looking west) - 1884

    8. Nonpoint source water quality problems typical of urban areas • Bacteria (animal waste and sewage overflows; frequent violations of EPA standards) • Excessive nutrients (nitrogen and phosphorus, causing accelerated weed/algae growth) • Oil, grease, solvents, trash • Soil from eroded banks, bare lawn and construction areas • Metals from vehicle rusting, brake pads, etc.

    9. Lower Doan Brook IssuesRockefeller Park • Degraded banks, soil erosion, flow confined between walls

    10. The Doan Brook Sewershed • Sends sanitary or combined sewage to the Doan Valley Interceptor. • 20.1 square miles (12,900 acres). • Upper sewershed has mostly separated sewers, but they empty into the lower sewershed’s combined system. Doan Valley Interceptor

    11. Heights/Hilltop Interceptor (HHI)(NEORSD) • Reduces DVI sewershed to 9.8 square miles, less than 1/2 of current area; • Reduces CSOs by about 50%; • Still 400 mg/yr CSOs; • Still frequent water quality violations. Doan Valley Interceptor Heights/Hilltop Interceptor

    12. The Bottom Line… • No single technical fix will restore Doan Brook. • Ongoing large projects are both required by law and necessary to the health of the brook. • Smaller fixes for Doan Brook are beginning to be implemented. • More complete brook restoration will require a combination of many large and small fixes. • Brook restoration will require a sustained effort by many people and organizations over an extended period of time.

    13. Project Goals • Reduce flow velocity • Improve water quality • Reduce flood elevation • Create stable riparian vegetation • Enhance aquatic life • Improve educational uses

    14. Future restoration project in cooperation with Woodbury PTO/Shaker Schools - South Branch Doan Brook