T15 Upper Feather River Dams Fault Exploration, Indian Creek Fault (ICF)
2 Documents in Project
Summary
SCH Number
2026060204
Public Agency
California Department of Water Resources
(DWR)
Document Title
T15 Upper Feather River Dams Fault Exploration, Indian Creek Fault (ICF)
Document Type
NOE - Notice of Exemption
Received
Posted
6/4/2026
Document Description
To evaluate past tectonic activity that could influence dam safety at Antelope Lake in the future one trench sites (T-15) on the ICF near Antelope Lake in
the Mt. Hough Ranger District. T-15 will be excavated and studied to better define the location and history of the ICF approximately 6 miles upstream of
Antelope Dam along Indian Creek. Preliminary subsurface geologic exploration at the ICF sites will take place prior to excavation. A hand auger or
post-hole tool will be used to dig into the ground and then backfilled with the same soil. Tarps will be used to place the soil on temporarily until backfilling.
Contact Information
Name
Leah Feigelson
Agency Name
California Department of Water Resources
Job Title
Project Geology Engineering Geologist
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Janesville
Counties
Plumas
Regions
Northern California
Other Location Info
upstream of antelope lake/dam
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 4, Section 15304 Minor Alterations to Land
Reasons for Exemption
Class 4 exemptions actions consisting of minor alterations to land including minor trenching and backfilling where the surface is restored. The goal of the
trenching is to evaluate past tectonic activity that could influence dam safety in the future. The trench will be open for up to four weeks at
each location. All preliminary work will be completed in a day; no hand-dug locations will be left open. At the end of the project, site will be restored to
original conditions using the excavated spoils, straw, and native seed per Plumas National Forest direction.
Attachments
Notice of Exemption
Disclaimer: The Governor’s Office of Land Use and Climate Innovation (LCI) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. For more information, please visit LCI’s Accessibility Site.