Minor Alteration No. WA2025039 – Colusa Bypass Channel Capacity Rehab Project: Geotechnical Studies Drilling Program Plan
24 Documents in Project
Summary
SCH Number
2015052035
Lead Agency
California Department of Water Resources
(DWR)
Document Title
Minor Alteration No. WA2025039 – Colusa Bypass Channel Capacity Rehab Project: Geotechnical Studies Drilling Program Plan
Document Type
NOD - Notice of Determination
Received
Posted
9/3/2026
Document Description
Approval of Minor Alteration No. WA2025039, under California Code of Regulations, Title 23, Article 3, Section 6, for work within an adopted plan of flood control: To conduct approximately 17 cone penetration tests (CPTs) and eight (8) borings on the north levee of the Colusa Bypass. The CPTs will be pushed to a depth of 30 feet below ground surface (bgs) and will be within the northern bank crest and waterside toe, and the borings will be conducted to depths from 30 feet to 50 feet bgs and will also be within the northern bank crest and waterside toe.
Contact Information
Name
Jennifer Calles
Agency Name
Central Valley Flood Protection Board
Job Title
Senior Environmental Scientist
Contact Types
Responsible Agency
Phone
Name
Mitra Emami
Agency Name
Department of Water Resources, Flood Maintenance and Operations Branch
Job Title
Manager
Contact Types
Lead/Public Agency / Project Applicant
Phone
Email
Location
Coordinates
Cities
Unincorporated area
Counties
Colusa
Regions
Northern California
Waterways
Sacramento River
Other Location Info
The project is located on the left-bank of the Sacramento River at river mile 146 on the Colusa Bypass, within the unincorporated area of Colusa County (39.237172°N, -121.984247°W).
Notice of Determination
Approving Agency
Central Valley Flood Protection Board
Approving Agency Role
Responsible Agency
Approved On
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
No
(4) A mitigation reporting or monitoring plan was adopted for this project
No
(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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