California's waterways include rivers, lakes, and reservoirs that play a crucial role in the state's ecosystem and economy. Major rivers like the Sacramento River and San Joaquin River provide water for agriculture, drinking, and recreation. The state's extensive network of lakes, such as Lake Tahoe and Mono Lake, supports diverse wildlife and offers recreational opportunities. Additionally, California's waterways are vital for flood control and hydroelectric power generation. The California State Water Project and the Central Valley Project are key systems that manage water distribution across the state. These waterways also serve as habitats for various species, contributing to California's rich biodiversity.