Twain Harte Lake Association Dredging Project (Notification of Lake or Streambed Alteration, No. EPIMS-TUO-34780-R4)
Summary
SCH Number
2025070903
Public Agency
California Department of Fish and Wildlife, Central Region 4
(CDFW)
Document Title
Twain Harte Lake Association Dredging Project (Notification of Lake or Streambed Alteration, No. EPIMS-TUO-34780-R4)
Document Type
NOE - Notice of Exemption
Received
Posted
7/22/2025
Document Description
The California Department of Fish and Wildlife has executed Lake and Streambed Alteration
Agreement EPIMS Notification No. EPIMS-TUO-34780-R4, pursuant to Section 1602 of the Fish and Game Code
to the Project Applicant, Sierra Overhead Analytics, Inc.
The Project includes routine maintenance to remove accumulated sediment from the bed of Twain Harte Lake.
Sediment removal will be completed to allow for the inspection of dam safety equipment and to maintain
recreational and beneficial uses of the reservoir. Between 5,000 to 10,000 cubic yards of sediment will be
excavated from the lakebed each season using an excavator, front loader, and/or dozer, for a maximum total of
70,000 cubic yards of sediment after 10 years
Contact Information
Name
Erik Helseth
Agency Name
Twain Harte Lake Association
Job Title
Board member
Contact Types
Lead/Public Agency
Phone
Email
Name
Clint Stevens
Agency Name
California Department of Fish and Wildlife Region 4
Job Title
Environmental Scientist
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Twain Harte
Counties
Tuolumne
Regions
Countywide
Waterways
Twain Harte Lake, Twain Harte Creek
Township
2N
Range
6E
Section
17
Base
MDBM
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 8; California Code of Regulations, title 14, section 15308)
Reasons for Exemption
This Project includes maintenance of an existing facility to maintain dam safety
and provide continued recreational and beneficial uses. The Project will not result in an expansion of use and will
not result in significant effects if implemented according to the protective features of Lake or Streambed Alteration
Agreement EPIMS-TUO-34780-R4.
County Clerk
Tuolumne
Attachments
Notice of Exemption
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