Upper Horse Creek Valley Channel Restoration Project
Summary
SCH Number
2025090709
Public Agency
California Regional Water Quality Control Board, North Coast Region 1
(RWQCB)
Document Title
Upper Horse Creek Valley Channel Restoration Project
Document Type
NOE - Notice of Exemption
Received
Posted
9/16/2025
Document Description
This Project will restore over 2.4 acres of floodplain, instream, and riparian habitat along an approximately 2,100-foot-long reach of Horse Creek, tributary to the mid Klamath River. Heavy equipment will excavate approximately 31,000 cubic yards of elevated floodplain terrace materials to create approximately 2.4 acres of new floodplain habitat. The new floodplain habitat has been designed to connect with stream flows at the two-year flood event (307 cubic feet per second). The materials excavated from lowering the floodplain elevation will be hauled to a local quarry located approximately six miles from the project site and approximately 3,000 cubic yards of the excavated material will be screened and sorted to extract one- to three-inch spawning size gravel. Approximately 1,260 cubic yards spawning gravel will be hauled to the project site and will be placed outside of the wetted stream along its banks at two strategic gravel augmentation sites. High flows will disperse the gravel in Horse Creek, contributing to spawning material. Additionally, over 25 large wood habitat structures and roughness features will be installed in the stream channel and on the floodplain.
Contact Information
Name
Jacob Shannon
Agency Name
North Coast Regional Water Quality Control Board
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
unincorporated area
Counties
Siskiyou
Regions
Countywide
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 33; California Code of Regulations, Title 14, section 15333
Reasons for Exemption
This Project will create approximately 2.4 acres of new floodplain habitat along Horse Creek, an important tributary of the mid-Klamath River that remains a stronghold watershed for coho salmon recovery and does not exceed the size limits to be eligible for section 15333.
Attachments
Notice of Exemption
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