Yarrow Water is a river located in the Scottish Borders, flowing through the picturesque Yarrow Valley. It is approximately 20 miles long and is known for its scenic beauty, attracting visitors for hiking and fishing. The river eventually joins the River Ettrick before merging with the River Tweed. The area surrounding Yarrow Water is rich in history and folklore, often associated with the famous Scottish poet Walter Scott. The river is also home to various wildlife, making it an important ecological habitat. Its clear waters and tranquil environment contribute to its charm and appeal.