Ardingly Reservoir
 Ardingly Reservoir is a 198-acre (0.80 km2) reservoir that feeds the River Ouse located in West Sussex England 5 miles (8 km) north of Haywards Heath. The villages of Ardingly and Balcombe are immediately to the east and north of the reservoir respectively. The reservoir was created in 1978 by damming Shell Brook a tributary of the River Ouse which flows into the Ouse about 500m south of the Reservoir.The reservoir is filled with water pumped from the River Ouse when river flows are high.