Mel Canyon Debris and Sediment Basin


SCH Number
Lead Agency
City of Duarte
Document Title
Mel Canyon Debris and Sediment Basin
Document Type
MND - Mitigated Negative Declaration
Present Land Use
GP=Very Low Density Residential (VLDR) / Z=Single Family Residential (R1-B) [no changes proposed]
Document Description
The City is proposing to construct a debris and sediment catchment basin in Mel Canyon to prevent rock, sand, silt, and organic debris from flowing downslope onto Melcanyon Road and surrounding streets, causing drainage and flooding issues for adjacent and downstream properties. Mel Canyon is located within the San Gabriel Mountain foothills. The Project site comprises 2.82 acres consisting mainly of a small canyon floor just north of Brookridge Road at its intersection with Melcanyon Road. In addition, the Project site contains the lower portions of two small “feeder” canyons that form the upper northeast and northwest “arms”, or “ends”, of the debris basin. Runoff from the two feeder canyons has historically flowed downhill and collected in the flat canyon floor, along with sediment and various types and amounts of debris (e.g., vegetation, rocks, etc.). The Project would result in the removal of all existing vegetation within the entire 2.82-acre site.

Contact Information

Craig Hensley
Agency Name
City of Duarte
Job Title
Community Development Director
Contact Types
Lead/Public Agency / Project Applicant


Azusa, Duarte, Monrovia
Los Angeles
Citywide, Countywide, Southern California
Cross Streets
Brookridge Road/Melcanyon Road
Total Acres
Parcel #
8602-002-012, 8602-018-005
State Highways
I-210, I-605
Valley View Elem. School
San Gabriel River, Santa Fe Recr. Area

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 Fish and Wildlife, South Coast Region 5 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Transportation, District 7 (DOT), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC), State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Division of Water Rights, California Department of Water Resources (DWR)
State Reviewing Agency Comments
California Department of Water Resources (DWR)
Development Types
Other (Debris and Sediment Basin)
Local Actions
Project Authorization
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Cumulative Effects, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Growth Inducement, 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, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire


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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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