doan brook watershed partnership. mission statement the doan brook watershed...

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

• 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

The Doan Brook and Its The Doan Brook and Its Watershed Watershed

• Doan Brook is 8.4 miles long.

• The watershed area is about 11.7 square miles (7,500 acres).

The Parks...The Parks...

Donated and

developed 1882 to

1900

Site 14 Dredge Spoil Area

Gordon Park/Lake Front State Park

Rockefeller Park/Cultural Gardens

Wade Park

Ambler Park

Shaker Lakes Parks

Nature Center at Shaker Lakes

Doan Brook Gorge

Horseshoe Lake Dam from Downstream - 1900

Lower Shaker Lake from Larchmere (looking west) - 1884

Nonpoint source water quality Nonpoint source water quality problems typical of urban areasproblems typical of urban areas

Bacteria (animal waste and sewage Bacteria (animal waste and sewage overflows; frequent violations of EPA overflows; frequent violations of EPA standards)standards)

Excessive nutrients (nitrogen and Excessive nutrients (nitrogen and phosphorus, causing accelerated phosphorus, causing accelerated weed/algae growth)weed/algae growth)

Oil, grease, solvents, trashOil, grease, solvents, trash Soil from eroded banks, bare lawn and Soil from eroded banks, bare lawn and

construction areasconstruction areas Metals from vehicle rusting, brake pads, etc.Metals from vehicle rusting, brake pads, etc.

Degraded banks, soil erosion, flow confined between walls

Lower Doan Brook IssuesLower Doan Brook IssuesRockefeller ParkRockefeller Park

The Doan Brook The Doan Brook SewershedSewershed

• Sends sanitary or Sends sanitary or combined sewage combined sewage to the Doan to the Doan Valley Valley Interceptor.Interceptor.

• 20.1 square miles 20.1 square miles (12,900 acres).(12,900 acres).

• Upper sewershed Upper sewershed has mostly has mostly separated separated sewers, but they sewers, but they empty into the empty into the lower lower sewershed’s sewershed’s combined combined system.system.

Doan Valley Interceptor

Heights/Hilltop Interceptor Heights/Hilltop Interceptor (HHI)(HHI)(NEORSD)(NEORSD)

Heights/Hilltop Interceptor

Doan Valley Interceptor

• Reduces DVI Reduces DVI sewershed to sewershed to 9.8 square 9.8 square miles, less than miles, less than 1/2 of current 1/2 of current area;area;

• Reduces CSOs Reduces CSOs by about 50%;by about 50%;

• Still 400 mg/yr Still 400 mg/yr CSOs;CSOs;

• Still frequent Still frequent water quality water quality violations.violations.

The Bottom Line…The Bottom Line… No single technical fix will restore Doan Brook.No single technical fix will restore Doan Brook. Ongoing large projects are both required by Ongoing large projects are both required by

law and necessary to the health of the brook.law and necessary to the health of the brook. Smaller fixes for Doan Brook are beginning to Smaller fixes for Doan Brook are beginning to

be implemented.be implemented. More complete brook restoration will require a More complete brook restoration will require a

combination of many large and small fixes.combination of many large and small fixes. Brook restoration will require a sustained effort Brook restoration will require a sustained effort

by many people and organizations over an by many people and organizations over an extended period of time.extended period of time.

Project Goals Project Goals

Reduce flow velocityReduce flow velocity Improve water qualityImprove water quality Reduce flood elevationReduce flood elevation Create stable riparian vegetationCreate stable riparian vegetation Enhance aquatic lifeEnhance aquatic life Improve educational usesImprove educational uses

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