California Aqueduct-San Luis Canal Subsidence Remediation Projects
Subsidence has reduced flow capacity in areas of the California Aqueduct (Aqueduct) throughout the Central Valley. To address subsidence and improve reliability of water deliveries, DWR and Reclamation have undertaken several projects to regain lost flow capacity to design levels.
At the Aqueduct’s Pools 17, 18, 20 and 21, the proposed projects’ objectives are to maintain functionality of the pools to enable DWR to maintain operational flexibility.
The proposed project located along the Aqueduct between Aqueduct Milepost (MP) 128.4 to MP 135.6 would raise portions of the concrete liner of Pools 17 and 18 in Fresno County. The northernmost pool, Pool 17 at MP 128.4, is approximately 1.4 miles west of the town of Cantua Creek. The southernmost pool, Pool 18 at MP 135.6, is approximately 6.5 miles southeast of Cantua Creek.
Figure 2-2 titled Project Location – Pools 17/18
Figure 2-2 titled Project Location – Pools 20/21
Contact Information
Attn: CASP Environmental Compliance
Division of Engineering #6
715 P Street
Sacramento, CA 95814
E-mail: casp@water.ca.gov
Documents
- San Luis Canal (California Aqueduct Pools 17 and 18) Liner Raise Project (October 2025)
- San Luis Canal (California Aqueduct Pools 20 and 21) Liner Raise Project (October 1025)
- California Aqueduct - San Luis Canal Geotechnical Investigations Final (August 2021)
- Notice of Intent to Adopt a Mitigated Negative Declaration (July 2021)
- Bureau of Reclamation (usbr.gov)