Lower Cosumnes Floodplain Restoration Project - Cougar Wetlands

2 Documents in Project


SCH Number
Lead Agency
Sacramento County
Document Title
Lower Cosumnes Floodplain Restoration Project - Cougar Wetlands
Document Type
MND - Mitigated Negative Declaration
Present Land Use
managed wetland preserve/AG-80/Ag crop land

Document Description
The proposed project consists of grading of land to restore a more natural, historic hydrological regime and riparian floodplain habitat and function at the Cougar Wetland Unit. The proposed project would be achieved by reconnecting the historic floodplain habitat and topography through the creation of levee breaches and a small portion of some of the historic slough channels that once existed within the Cosumnes Sink. In total, the project site consists of approx 154 acres within the Cosumnes River Preserve, of which only 8 acres will be actively disturbed. One international levee breach will be created along the Cosumnes River at the southern end of the Cougar Wetland Unit. The breach width will be approx 40 ft wide at the peak of the existing levee, and approx 15 ft wide at the river's streambed or flow line. The main slough channels and smaller side channels will be engineered to maintain positive drainage in order to prevent the stranding of native fish species within the newly restored waterways. An estimated total of one mile of slough channels would be created within the Cougar Wetland Unit. In total, approx 20,500 cy of soil will be moved within the project site and 5,000 cy of stripping's (large wood material) will be hauled off-site.

Contact Information
Todd Smith
Sacramento County
827 Seventh Street, Room 225
Sacramento, CA 95814

Phone : (916) 874-6141


38°15'28.28"N 121°23'49.24"W
Cross Streets
Orr Rd/Twin Cities Rd
Total Acres
Parcel #
146-0320-006, 008
State Highways
Western Pacific
Cosumnes River

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (wetland restoration)
Local Action
Grading Permit
Project Issues
Archaeologic-Historic Flood Plain/Flooding Soil Erosion/Compaction/Grading Traffic/Circulation Vegetation Water Quality Wetland/Riparian Wildlife
Reviewing Agencies
Cal Fire California Department of Fish and Wildlife, North Central Region 2 California Department of Parks and Recreation California Highway Patrol California Native American Heritage Commission California Public Utilities Commission California State Lands Commission Delta Protection Commission Delta Stewardship Council Department of Water Resources Office of Historic Preservation Resources Agency Central Valley Flood Protection Board California Regional Water Quality Control Board, Central Valley Sacramento Region 5

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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