SCH Number 2025110365

Project Info

Title

San Luis Canal (California Aqueduct Pools 20 and 21) Liner Raise Project

Description

The proposed project would raise portions of the concrete liner of the California Aqueduct's Pools 20 and 21 between Milepost (MP) 158.7 and MP 170.3 to maintain functionality in Pools 20 and 21 to enable DWR to avoid future disruptions of water deliveries to the Public Water Agencies, thereby maintaining operational flexibility and improving safety and reliability. The existing concrete liner would be raised over approximately 18 miles, with varying raise heights: up to 1.5 feet over 5 miles, up to 2.5 feet over 3.5 miles, and up to 3 feet over 9.5 miles. Construction activities would be performed above the waterline and would not require dewatering of the Aqueduct. Work would include excavation and use of on-site borrow material, road drain rerouting, and the removal and reinstallation of guardrails, road delineators, and other existing features to accommodate the liner raise. Construction is anticipated to begin in 2027 and conclude within nine months.

2 documents in project