: Thompson Creek Dam Dry Reservoir Mowing (Lake or Streambed Alteration Agreement No. 1600- 2020-0086-R5)


SCH Number
Public Agency
California Department of Fish and Wildlife, South Coast Region 5 (CDFW)
Document Title
: Thompson Creek Dam Dry Reservoir Mowing (Lake or Streambed Alteration Agreement No. 1600- 2020-0086-R5)
Document Type
NOE - Notice of Exemption
Document Description
The California Department of Fish and Wildlife (CDFW) has executed a Lake or Streambed Alteration Agreement number 1600-2020-0086-R5, pursuant to Section 1602 of the Fish and Game Code to Los Angeles County Public Works (County). The project is limited to a single mowing event to remove vegetation in a prescribed area inside the existing Thompson Creek Dam’s basin and surrounding developed areas. The project is intended as a maintenance activity to ensure the flood control facility operates properly to protect downstream communities and conserve water via increased capacity for local water supply.

Contact Information

David Lin
Agency Name
California Department of fish and Wildlife, South Coast Region
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency


Los Angeles
Southern California
Cross Streets
See below "Other Location Info."
Other Location Info
The project is located at the Thompson Creek Dam within Thompson Creek, tributary to the San Gabriel River, City of Claremont, in the County of Los Angeles, State of California; Latitude 34.140231° (Decimal Degrees), Longitude -117.707697° (Decimal Degrees); United States Geological Survey 7.5 Minute Quad Map Mount Baldy Township 01N Range 08W Section 27 San Bernardino meridian; Assessor Parcel Number 8675-024-031.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Type – Class 1; California Code of Regulations, title 14, section 15301
Reasons for Exemption
Class 1, Section 15301: 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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