Riverside Drive Flood Control Channel Water Quality Improvement Project

2 Documents in Project

Summary

SCH Number
2018071018
Lead Agency
San Diego County
Document Title
Riverside Drive Flood Control Channel Water Quality Improvement Project
Document Type
MND - Mitigated Negative Declaration
Received

Document Description
The proposed project would modify the existing flood control channel to capture and infiltrate dry-weather flow to improve water quality while maintaining its ability to convey the 100-year storm event. The existing flood control channel is approx 80-ft wide at the top, 40-ft wide along the bottom, six-ft deep, and 1,238 ft long with a two-ft thick clay liner. In the center of the channel is a 1,133 ft long 3-ft wide low-flow concrete channel that is flanked by 2% slopes. Four outlets from the Paseo Palmas and Paseo Vista subdivisions discharge directly at the 3-ft wide low-flow concrete channel. The flood control channel's current design allows dry-weather flow from the neighborhood drainages to discharge downstream into the channel which is part of Eucalyptus Hill Crk and is a tributary of the San Diego River. Water quality of the dry-weather flow was analyzed in 2016; it was determined that pH, fecal coliform, Enterococcus, total nitrogen, total phosphorus, and iron exceeded the numerical action levels and entered the channel. The proposed channel improvement would capture and infiltrate dry-weather flow to improve water quality in the project area and downstream.

Contact Information
Gail Getz
San Diego County
5510 Overland Ave, Suite 410, MS O-332
San Diego, CA 92123

Phone : (858) 694-3911

Location

Coordinates
32°51'.7739"N 116°56'.6854"W
Counties
San Diego
Cross Streets
Riverside Dr and Riverford Rd
Zip
92040
Total Acres
1.17
Parcel #
3793004100, 3793104500
State Highways
67
Schools
Lakeside Farms ES
Waterways
Eucalyptus Hill Crk, Sweetwater River
Township
15S
Range
1W
Section
13/14
Base
ElCajon
Other Location Info
Lakeside

Notice of Completion

Review Period Start
Review Period End
Development Type
Other (flood control channel improvement)
Local Action
Other Action
Project Issues
Archaeologic-Historic Biological Resources Other Other Issues: paleontological
Reviewing Agencies
California Department of Parks and Recreation Caltrans, District 11 Department of Water Resources Native American Heritage Commission Office of Historic Preservation Regional Water Quality Control Board, Region 9 Resources Agency San Diego River Conservancy State Lands Commission State Water Resources Control Board, Division of Drinking Water, District 14 State Water Resources Control Board, Division of Water Rights Department of Fish and Wildlife, Region 5
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