Los Padres Dam Outlet Modifications Project

2 Documents in Project


SCH Number
Lead Agency
Monterey Peninsula Water Management District
Document Title
Los Padres Dam Outlet Modifications Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Resource Conservation
Document Description
California American Water is proposing to modify the existing low-level regulating outlet at the Los Padres Dam and Reservoir in Monterey County, California. The proposed project is intended to accomplish the following three primary goals: 1) meet the California Department of Water Resources Division of Safety of Dams mandated requirement to drain the reservoir in case of emergency; 2) supply water to the Carmel River during low-flow summer months to meet instream flow requirements and sustain aquatic organisms, including South Central California Coast Steelhead; and 3) restore water supply to the existing fish trap and ladder necessary to provide upstream fish passage to adult steelhead. Achieving these goals are essential for restoring the original purpose of the outlet and reliably achieving existing environmental mandates regarding sustaining aquatic organisms within the Carmel River and providing upstream fish passage at Los Padres Dam. The proposed project includes the following components: 1. Site preparation and access improvements 2. Relocation of the upstream entrance 3. Replacement of emergency outlet valves 4. Installation and connection of new pipeline to existing pipeline 5. Site restoration and demobilization Project construction is anticipated to begin in fall 2023, with completion in late 2024.

Contact Information

Maureen Hamilton
Agency Name
Monterey Peninsula Water Management District
Job Title
District Engineer
Contact Types
Lead/Public Agency


Unincorporated area
Cross Streets
Cachagua Road and Nason Road
Parcel #
State Highways
G16 Carmel Valley Road
Carmel River
Other Location Info
Nearest community: Cachagua

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 5 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Central Coast Region 3 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, State Water Resources Control Board, Divison of Financial Assistance, California Department of Fish and Wildlife, Central Region 4 (CDFW)
State Reviewing Agency Comments
California Department of Fish and Wildlife, Central Region 4 (CDFW)
Development Types
Water Facilities (Reservoir)(Type Reservoir Outlet, MGD 2.69)
Local Actions
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Economics/Jobs, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Schools/Universities, Septic System, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Draft Environmental Document [Draft IS, NOI_NOA_Public notices, OPR Summary Form, Appx,]
Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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