The Platte River is a major river in the Midwestern United States, located in Nebraska. It is a tributary of the Missouri River, which it joins near Plattsmouth. The Platte River is approximately 310 miles long and is one of the longest rivers in Nebraska. It is an important source of water for the state, providing irrigation and drinking water for many communities. The Platte River is also a popular destination for recreational activities such as fishing, boating, and camping.