Knightsen Wetland Restoration Project
East Contra Costa County Habitat Conservancy and partners are developing a habitat restoration project on a 645-acre property east of the Knightsen community. The project team is currently developing concept plans, considering multiple objectives that will create and restore wetlands and other habitat, provide community flood protection, improve Delta water quality, and explore recreation opportunities.
Project Brochure (PDF)
Knightsen is located in the Sacramento-San Joaquin Delta on a generally flat plain along the old Delta shoreline. Historically, the area drained as sheet flow and some shallow channels toward wetlands that lined the water’s edge of the Delta. The flat topography of the area, combined with a variety of constructed features such as railroad tracks, roads, and levees that prevent water from reaching a natural outlet, results in flooding.
A history of flooding and poor stormwater quality prompted the Contra Costa County Public Works Department, in conjunction with the Knightsen Town Advisory Council, to conduct a feasibility study to determine the best approach to address drainage concerns in this region. This study, as well as other studies undertaken since then, identified the 645-acre project site as a good location to direct and store floodwaters, thereby reducing flood impacts in the community. Acquisition of the property and development of the multi-objective restoration project would therefore benefit the community when future drainage improvements are built.
The East Contra Costa County Habitat Conservancy is leading the effort to develop the project, recently producing conceptual design alternatives for public comment. This conceptual alternative development phase of work is expected to be complete by October 2019. In the next project phase, project alternatives will be analyzed, refined, and a preferred design will be selected.
Public Input Opportunities
Public Meeting 2
Thursday, July 11, 2019
7 pm - 8:30 pm
Public Meeting 1
Wednesday, May 2, 2018
7 pm - 8:30 pm
Knightsen Farm Bureau
3020 2nd Street, Knightsen
- Assessments and Studies Plan (PDF)
- Baseline Soils Evaluation and Hydrologic Study (PDF - Large Document 9 MB)
- Biological Resource Assessment and Botanical Resource Survey Report (PDF - Large Document 14 MB)
- Utilities Constraint Memo (PDF)
- Weed Assessment (PDF)
- Wetland Delineation (PDF - Large Document 28 MB)
- Surface Water Hydrology Assessment (PDF)
- Conceptual Alternatives Report (PDF - Large Document 20.4 MB)
Funding for the various stages of this effort including acquisition, studies, assessments and design has been provided by: California Coastal Conservancy, California Department of Fish and Wildlife, California Wildlife Conservation Board, Contra Costa County Flood Control & Water Conservation District, East Bay Regional Park District, East Contra Costa County Habitat Conservancy, Knightsen Community Services District, Sacramento - San Joaquin Delta Conservancy, and U.S. Fish and Wildlife Service.