Building Reservoirs In California Helps

Allow the northers water from Canada to flow all the way through California and build several water reservoirs to save it and the have the rest run through the southern area and drain out the bottom of California

California Gov. Gavin Newsom just completed tearing out dams north of San Fransisco.

https://thehill.com/policy/energy-environment/4914345-california-officials-tribal-leaders-celebrate-the-removal-of-long-disputed-klamath-dams/