Canyon Lake Hybrid Treatment Process - Phase 1

5 Documents in Project


SCH Number
Lead Agency
City of Canyon Lake
Document Title
Canyon Lake Hybrid Treatment Process - Phase 1
Document Type
MND - Mitigated Negative Declaration
Document Description
Canyon Lake was formed in 1928 when the Canyon Lake / Railroad Canyon Dam was constructed. Canyon Lake is located in Riverside County, and is within the City of Canyon Lake. It is owned and operated by the Elsinore Valley Municipal Water District (EVMWD). EVMWD has used the reservoir as a potable water source since 1957 when the Canyon Lake Water Treatment Plant began operation. The reservoir is supplied by stormwater runoff from both the upper San Jacinto River Watershed and Salt Creek watershed. The reservoir, covers approximately 525 acres (212 ha), has 14.9 miles (24.0 km) of shoreline, and has a storage capacity of 11,586 acre-feet (14,291,000 m^3). The lake has three main sections - the relatively shallow East Bay (depths generally less than 10 ft), the deeper Main Lake portion of the lake (depths in excess of 40 ft), and the area north of the causeway that connects with the San Jacinto River. The proposed Project consists of application of alum to Canyon Lake to remove nutrients that contribute to algal blooms. A wide-range of management options, ranging from oxygenation, aeration, mixing, and dredging to application of alum, Phoslock, and other nutrient binders have been considered.

Contact Information

Richard Rowe
Agency Name
City of Canyon Lake
Contact Types
Lead/Public Agency


Canyon Lake
Canyon Lake

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Department of Parks and Recreation, California Department of Public Health (CDPH), California Department of State Parks, Division of Boating and Waterways, California Department of Transportation, District 8 (DOT), California Native American Heritage Commission (NAHC), California Regional Water Quality Control Board, Santa Ana Region 8 (RWQCB), Department of Fish and Wildlife, Region 6, Department of Toxic Substances Control, Department of Water Resources, Resources Agency, Resources, Recycling and Recovery, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (Water Treatment Process)
Local Actions
Canyon Lake Water Treatment Process
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Coastal Zone, Cultural Resources, Flood Plain/Flooding, Geology/Soils, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Noise, Public Services, Recreation, Transportation, Vegetation, Wetland/Riparian, Wildfire, Wildlife

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 or via phone at (916) 445-0613.

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