This bill extends provisions of the San Joaquin River Restoration Settlement Act that govern management of five California rivers: the Calaveras, Stanislaus, Tuolumne, Merced, and San Joaquin rivers. Specifically, it changes the expiration date for certain settlement terms from December 31, 2025 to December 31, 2045, giving the agreement twenty additional years of operation. The bill affects water management, restoration efforts, and related activities on these rivers in California's Central Valley. No specific funding amounts are mentioned in the legislation text provided. By extending these provisions two decades longer, the bill aims to provide stability and continuity for ongoing river management and restoration efforts in the region.