The Piru River is a river located in California, flowing through the Los Padres National Forest. It is approximately 30 miles long and is a tributary of the Santa Clara River. The river is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. The Piru River originates in the mountains of the Transverse Ranges and eventually joins the Santa Clara River near the town of Piru. The river's watershed supports diverse wildlife and plant species, making it an important ecological area. Its waters are also vital for local agriculture and water supply.