City of Monterey Detention Basin Management Project


SCH Number
Lead Agency
Monterey, City of (City of Monterey)
Document Title
City of Monterey Detention Basin Management Project
Document Type
MND - Mitigated Negative Declaration

Document Description
The project includes maintenance activities for six detention basins in the city of Monterey: Lake El Estero, Washerwoman's Pond, Lagunita Mirada Sediment Basin, Lower Ragsdale, Harris, and Wilson. The detention basins capture and store stormwater runoff from surrounding areas. The capacity and function of these detention basins have been reduced by the presence of emergent vegetation and the accumulation of sediment. Additionally, some have associated infrastructure that requires upkeep and occasional repairs to function as intended. The project involves management and maintenance activities by the city that would allow the intended function and capacity of these detention basins to be restored and maintained over a period of 15 years. The proposed activities include dredging of all of the basins except Lake El Estero to restore their design depths. Washerwoman's Pond and Lagunita Mirada Sediment Basin would be drained for maintenance activities, to work at the pipe inlets and the outlet head-walls. Proposed maintenance activities at all of the basins would include: vegetation management/removal; trash removal; and inspection and repair of infrastructure as needed. Installation of specific erosion control structures are proposed at Lake El Estero.

Contact Information
Jeff Krebs
City of Monterey
570 Pacific St
Monterey, CA 93940

(831) 646-3877


State Highways
1, 68, 218
Monterey Regional

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (management plan Type)
Local Action
Other Action Other Action: management plan
Project Issues
Other Issues Cumulative Effects Landuse Growth Inducing Wetland/Riparian Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Solid Waste Soil Erosion/Compaction/Grading Sewer Capacity Septic System Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Drainage/Absorption Coastal Zone Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual Other Issues: GHG
Reviewing Agencies
Native American Heritage Commission California Department of Parks and Recreation California Highway Patrol Caltrans, District 5 Caltrans, Division of Aeronautics Department of Fish and Wildlife, Region 4 Department of Water Resources Regional Water Quality Control Board, Region 1 Resources Agency State Water Resources Control Board, Division of Drinking Water
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