The River Derwent is a significant river located in Cumbria, England. It flows for approximately 30 miles, starting in the Lake District and winding its way through picturesque landscapes before joining the River Eden. The river is known for its scenic beauty and is a popular spot for outdoor activities such as fishing and walking. The River Derwent passes through several towns, including Keswick and Cockermouth. It is also home to various wildlife and supports a diverse ecosystem. The river's clear waters and surrounding natural environment make it an important feature of the region, attracting both locals and tourists alike.