Current reservoir levels South West Water monitor the levels of our reservoirs to ensure optimum operation. Find out more here. The current water levels of some of our reservoirs are shown in the table below. Week ending: 14 August 2022 Reservoir Current level (%) Current storage (Ml) Net capacity (Ml) Stithians 35 1,718 4,967 Argal 62 803 1,302 College 69 169 246 Crowdy 43 440 1,022 Colliford 37 10,634 28,540 Siblyback 39 1,248 3,182 Upper Tamar 31 454 1,477 Roadford 53 18,390 34,500 Burrator 38 1,621 4,210 Wistlandpound 43 670 1,550 Meldon 43 1,287 3,020 Wimbleball 42 8,966 21,320 Fernworthy 56 990 1,765 Kennick, Tottiford and Trenchford 43 855 2,011 Avon 71 929 1,313 Venford 66 489 740