The Grande Ronde River is a tributary of the Snake River, located in northeastern Oregon and southeastern Washington. It flows approximately 100 miles through the scenic Grande Ronde Valley, known for its diverse wildlife and beautiful landscapes. The river is popular for recreational activities such as fishing, kayaking, and rafting. The river's watershed is part of the larger Columbia River Basin, which plays a crucial role in the region's ecology. The Grande Ronde River is also significant for its historical importance to the local Native American tribes, including the Nez Perce and Umatilla tribes, who have lived in the area for thousands of years.