Cazenovia Creek Streambank Stabilization – Joint Board 27R
Holland, NY

Grantee: Erie County Soil and Water Conservation District
Basin Program Funds: $16,387
Non-federal Funds: $14,485
Project Duration: 07/2002 - 07/2003
Status: complete

Problem Statement
The project site is located on the East Branch of Cazenovia Creek, off Highway NY16 in the town of Holland. Approximately 200 feet of streambank at the outside bend of a meander is severely eroding. This erosion is occurring at the upstream end of the Erie and Wyoming County Joint Board project site 27-R. A large gravel bar has accumulated on the opposite bank that directs water towards the eroding bank. If the erosion is allowed to continue the remaining portion of the project is in jeopardy of being undermined and subsequently failing. Larger joint board sites and a highway bridge are located less than 2,000 feet downstream. Annual trout stocking takes place 4,000 feet downstream of the site. The stream has excellent angling opportunities which may be hindered by increased sediments from erosion. The continued erosion is jeopardizing active farmland and prime farm soils.

Background
The New York State Department of Environmental Conservation 1996 Priority Water Bodies List (segment ID 0103-0009) designates the east branch of Cazenovia Creek as a class C (T) stream and identifies the primary use impairment as fish propagation. The primary pollutant is sediment. The primary source of sediment is streambank erosion. A remediation strategy exists but funding is needed. Cazenovia Creek has a drainage area of 135 square miles and joins the Buffalo River within a designated Area of Concern, as identified in the Lake Erie Management Plan. The Buffalo River joins Lake Erie near the mouth of the Niagara River. A Buffalo River Remedial Action Plan strategy has been developed with goals of remediating bottom sediments, and continuing ongoing programs to manage nonpoint source pollution and improve fish and wildlife habitat. The Lake Erie Management Plan acknowledges that sediment is impairing five of 14 beneficial uses of the stream, including restrictions on fish and wildlife consumption and dredging activities. Cazenovia Creek is listed as a high-priority stream in the Erie County Water Quality Coordinating Committee’s Water Quality Strategy.

Activities
This project will stabilize the streambank by using strictly bioengineering techniques. The completed project will also be used as a learning tool to educate local municipalities and other conservation districts on the importance of erosion control in the area. The project will incorporate a heavy rock toe with 1V: 2H side slopes. A 100-cubic-yard gravel bar will be removed and the stream thalweg (the line defining the lowest points along the length of a river bed) will be relocated within a defined “V” at the middle of the stream over a distance of 200 linear feet. The new channel will be placed 20 feet south of the existing thalweg, which is at the toe of slope. The side slopes will be planted with live stakes and rooted cuttings of streamco willows and red osier dogwoods. The top portions of the bank will be planted with a rye/fescue seed mix as a filter to the stream.

Results
In December 2002, 170 feet of rock riprap plus a 15 foot key upstream and downstream were installed. Additionally, gravel bar material was placed behind a 60-foot sycamore which had fallen into the stream and was acting as a deflector. Total bank stabilization length is 230 feet. In May, 2003 streamco willow stakes within rock and top of bank were planted. Wattles were added in the gravel bar behind the fallen tree and disturbed areas were seeded.

This project was a joint project with project number 09-02-14, Cazenovia Creek Streambank Stabilization - Joint Board 18R. See that project for additional information.

Contact: Mr. Mark Gaston, 716-652-8480

 

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