US HB6641

Authorizes $3.4 billion in federal financial and technical assistance for 22 water infrastructure projects in California's Central Valley, including groundwater banking, recharge basins, water treatment plants, reservoir construction, and canal improvements

Allocates $830 million for Delta-Mendota Canal subsidence correction and $850 million for San Luis Canal/California Aqueduct subsidence correction to restore original design conveyance capacity

Funds major groundwater projects including $360 million for East San Joaquin Valley Groundwater Banking and Storage Program and $174 million for Arvin Edison Water Storage District recovery wells and water quality treatment

Provides funding without reimbursement, matching, or cost-sharing requirements for most projects, with contracts not treated as new or amended under Reclamation Reform Act provisions

Requires Secretary of the Interior to coordinate with Indian Tribes, California state agencies, and local irrigation districts, and comply with all applicable environmental laws including NEPA