Long Term Annual Maintenance of Debris Basins in Los Angeles County


SCH Number
Public Agency
California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
Document Title
Long Term Annual Maintenance of Debris Basins in Los Angeles County
Document Type
NOE - Notice of Exemption
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement number 1600-2008-0290-R5 Amendment – A9, pursuant to Section 1602 of the Fish and Game Code to the Los Angeles County Flood Control District (LACFCD). LACFCD proposes to continue project activities related to the routine maintenance of 197 debris basin facilities. These activities include debris removal, tree trimming, vegetation mowing, brush clearance, entrainment channel maintenance, sediment removal, and access road maintenance. The project does not involve any additional construction or other activities, and it is limited to ongoing maintenance activities required to protect downstream property and infrastructure from potential damage caused by flooding and debris flows. The present Amendment is limited to: (1) correcting the name of one debris basin facility, (2) authorizing more frequent sediment removal from smaller debris basins, and (3) adding a special permit condition specific to Nichols Debris Basin authorizing more frequent sediment removal.

Contact Information

David Lin
Agency Name
California Department of Fish and Wildlife
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency


Los Angeles
Los Angeles
Southern California
Other Location Info
The project is located within 197 debris basins located in multiple watersheds within the County of Los Angeles, State of California. The debris basins are tributary to the Los Angeles River, San Gabriel River, Santa Monica Bay, Dominguez Channel, and Santa Clara River watersheds.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Class 1, Section 15301
Reasons for Exemption
This project consists of the operation, repair, and maintenance of existing public structures, facilities, mechanical equipment, and topographical features involving no expansion of use beyond that existing at the time of the Lead Agency’s determination.
County Clerk
Los Angeles


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