Woodhead Reservoir is a large body of water located in the Peak District of England. It was constructed in the 19th century to supply drinking water to nearby towns and cities. The reservoir is surrounded by scenic landscapes, making it a popular spot for outdoor activities such as hiking and birdwatching. The reservoir is part of the Woodhead Pass, which connects Glossop to Barnsley. It plays a crucial role in the local ecosystem and is home to various wildlife species. Additionally, the area is known for its historical significance, with remnants of old railways and industrial sites nearby.