Current reservoir levels South West Water monitor the levels of our reservoirs to ensure their optimum operation. Find out more here. The current water levels of some of our reservoirs are shown in the table below. Week ending: 18 October 2020 Reservoir Current level (%) Current storage (Ml) Net capacity (Ml) Stithians 56 2,757 4,967 Argal 72 940 1,302 College 100 246 246 Crowdy 100 1,019 1,022 Colliford 59 16,735 28,540 Siblyback 59 1,873 3,182 Upper Tamar 100 1,477 1,477 Roadford 65 22,514 34,500 Burrator 69 2,918 4,210 Wistlandpound 88 1,371 1,550 Meldon 85 2,572 3,020 Wimbleball 60 12,704 21,320 Fernworthy 100 1,765 1,765 Kennick, Tottiford and Trenchford 36 730 2,011 Avon 89 1,167 1,313 Venford 81 602 740