Koyising Yang Spillway Improvement (Lake or Streambed Alteration Agreement No. EPIMS-TRI-48813-R1)
543 Documents in Project
Summary
SCH Number
2018122049
Lead Agency
Trinity County
Document Title
Koyising Yang Spillway Improvement (Lake or Streambed Alteration Agreement No. EPIMS-TRI-48813-R1)
Document Type
NOD - Notice of Determination
Received
Posted
7/31/2026
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement EPIMS Notification No.
EPIMS-TRI-48813-R1, pursuant to Section 1602 of the Fish and Game Code to Koyising Yang.
This project is limited to the improvement of a spillway of a man-mad pond on an ephemeral stream, which is an unnamed tributary of Hayfork Creek. The pond is for aesthetic and wildlife purposes, and no diversion of water shall occur out of it. Spillway improvements will include expanding the spillway area and adding rock armoring to eliminate sediment discharge. The pond has a gentle slope and the established riparian vegetation will not be disturbed. The length of the upgraded spillway will be approximately 16 feet. Once the in-situ soil is dry enough to support equipment weight, work shall commence. If water is still present at the time of construction, a dewatering plan will be provided to CDFW for review and approval.
Contact Information
Name
Dyana Judnick
Agency Name
CDFW
Job Title
Environmental Scientist
Contact Types
Responsible Agency
Phone
Name
Daniel Marvel
Agency Name
Trinity County
Job Title
Acting Director
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Hayfork
Counties
Trinity
Regions
Northern California
Parcel #
014-300-002-000
Waterways
Unnamed tributary to Hayfork Creek, a tributary to South Fork Trinity River,
Township
31N
Range
12W
Section
01
Base
Mt D
Other Location Info
1290 Brady Road
Notice of Determination
Approving Agency
CDFW
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Trinity
Final Environmental Document Available at
601 Locust Street Redding, CA. 96001
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
Attachments
Notice of Determination
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