2026 DEPP Dredge Work and Sump Maintenance
Summary
SCH Number
2026060485
Public Agency
California Department of Water Resources
(DWR)
Document Title
2026 DEPP Dredge Work and Sump Maintenance
Document Type
NOE - Notice of Exemption
Received
Posted
6/10/2026
Document Description
San Joaquin Field Division plans to dredge the Devil’s Den Pumping Plant (DEPP) forebay, repair erosions, and remove vegetation and sediment from the DEPP sump.
To complete the dredging activity, DWR staff will attach a Toyo pump to a crane. The crane will lower the pump into the DEPP forebay. The pump will then transfer water, mud, and silt through a hose and into the DEPP sump. This work is anticipated to take two weeks to complete.
To complete erosion repairs, a dump truck will bring in fill material. A backhoe will fill and compact erosions. A water truck will be used to control dust and aid in compaction.
To complete vegetation and sediment removal from within the DEPP sump, a backhoe, grader, long reach excavator, skid steer, front loader, and dozer will be used. A dump truck will transport sediment to the DEPP spoil site, and a water truck will be used to control dust and aid in compaction.
Dredging activities will take place in November 2026. This work is necessary to maintain the forebay and to continue to make water deliveries.
Contact Information
Name
Elizabeth Maldonado
Agency Name
Department of Water Resources, San Joaquin Field Division
Job Title
Senior Environmental Scientist (Specialist)
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Cities
Lost Hills
Counties
Kern
Regions
Unincorporated
Other Location Info
DEPP: 35°42'43.31"N 120° 0'39.43"W
DEPP Sump: 35°42'34.26"N 120° 0'35.89"W
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301 (b)
Reasons for Exemption
This project consists of maintenance activities that support the function of the California Aqueduct and water delivery within the State Water Project.
Attachments
Notice of Exemption
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