Geyserville Bank Stabilization, Riparian Revegetation, and Fish Habitat Enhancement Project

3 Documents in Project

Summary

SCH Number
2011082002
Lead Agency
Sotoyome Resource Conservation District
Document Title
Geyserville Bank Stabilization, Riparian Revegetation, and Fish Habitat Enhancement Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Land Intensive Agriculture

Document Description
The project site is located on the left (eastern) bank of the Russian River, some 300 ft. downstream of Geyserville Bridge in Sonoma County, CA. Historical aerial photographs show that the site has been relatively stable in recent decades until works to protect the Geyserville bridge redirected flow against this bank, while expanding the eastern edge of the massive gravel bar that now occupies most of the river in this location. Severe erosion to the project site has occurred over the last year. Site survey has revealed freshly-exposed vertical banks behind many fallen mature trees (see site photos) with a large section now completely lacking riparian vegetation. From inspection of a section of the exposed bank, it appears that the original sandy bank was at some point in the past, stabilized with debris, mostly concrete slabs mixed with construction debris. The aggressive erosion process is likely to continue, contributing many more tons of fine sediment (alluvial sand and levee topsoil) along with construction debris into the river, together with several more mature trees that are now close to the edge of the bank. The length affected by the erosion and the proposed work is 497 feet. If the erosion is allowed to continue for even one more winter there is indication that the existing healthy riparian will continue to erode another 500 feet downstream.

Contact Information
Kara Heckert
Sotoyome Resource Conservation District
P.O. Box 11526
Santa Rosa, CA 95406

Phone : (707) 569-1448

Location

Coordinates
38°42'45.78"N 122°53'38.03"W
Counties
Sonoma
Total Acres
0.772
Parcel #
140-240-013
State Highways
Hwy 128
Waterways
Russian River
Township
10N
Range
9W
Other Location Info
City/Nearest Community: Geyserville

Notice of Completion

Review Period Start
Review Period End
Local Action
Site Plan
Project Issues
Aesthetic/Visual Agricultural Land Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Geologic/Seismic Minerals Noise Soil Erosion/Compaction/Grading Traffic/Circulation Vegetation Water Quality Wetland/Riparian Land Use
Reviewing Agencies
California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Department of State Parks, Division of Boating and Waterways California Department of Transportation, District 4 California Highway Patrol California Native American Heritage Commission California Regional Water Quality Control Board, North Coast Region 1 California State Lands Commission Central Valley Flood Protection Board Department of Water Resources Resources Agency

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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