Aqualate Mere, in Staffordshire, is the largest natural lake in the English Midlands and is managed as a national nature reserve (NNR) by Natural England. The Mere lies within the borough of Stafford in Staffordshire, England, some 3 kilometres (1.9 mi) east of the market town of Newport, Shropshire. It is within the grounds of Aqualate Hall, a country house, with a landscaped deer park. It is fed by streams coming from the north, south and east (including Back Brook), and its outflow to the west forms the River Meese which joins the River Tern, a tributary of the River Severn.