Date Season Mean flow Mean SRP Mean Nitrate Mean NH4 Mean T Now Winter 7 324 9330 161 6.2 Now Spring 9 403 8301 182 11 Now Summer 17 835 6828 85 17.5 Now Autumn 20 831 7301 79 12.5 2080 low Winter 10 440 13000 220 7.5 2080 low Spring 11 480 9900 220 12.5 2080 low Summer 24 1100 9300 120 20 2080 low Autumn 29 1200 10500 110 14.5 2080 high Winter 10 500 14000 250 8.5 2080 high Spring 13 540 11000 240 14 2080 high Summer 28 1400 11000 140 22 2080 high Autumn 34 1400 12500 140 16.5