The Calaveras River is a river located in California, flowing through the Sierra Nevada foothills. It is approximately 50 miles long and is a tributary of the San Joaquin River. The river is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. The river's watershed is home to diverse wildlife and plant species, making it an important ecological area. The Calaveras River also plays a role in local agriculture, providing water for irrigation. Its waters are fed by snowmelt from the surrounding mountains, contributing to its flow throughout the year.