California is home to many significant rivers that play a crucial role in the state's ecology and economy. Major rivers include the Sacramento River, which is the longest river in California, and the San Joaquin River, known for its agricultural importance. These rivers provide water for irrigation, drinking, and recreation, supporting both urban and rural communities. The rivers also contribute to California's diverse ecosystems, providing habitats for various wildlife species. The Colorado River forms part of California's eastern border and is vital for water supply in the arid regions. Overall, California's rivers are essential for sustaining life and promoting economic activities across the state.