Period | Drop in water level | With-drawal for water supply | Total lake loss | Seepage loss 0.07 m/month | Evapo. loss from pan | Lake evapo. loss | Evapo. loss without treatment | Evapo. loss during treatment period | Saving in evaporation loss due to treatment | |
(F) | (W) | (F-W) | (S) | (P) | (P*0.70) | (F-W-S) | ||||
m | m | m | m | m | m | m | m | m | % | |
16-Dec-85 to 31-Dec-85 | 0.30 | 0.23 | 0.07 | 0.03 | 0.07 | 0.05 | 0.05 | 0.04 | 0.01 | 18.37 |
Jan-86 | 0.53 | 0.37 | 0.16 | 0.07 | 0.16 | 0.11 | 0.11 | 0.09 | 0.02 | 19.64 |
Feb-86 | 0.39 | 0.21 | 0.18 | 0.07 | 0.20 | 0.14 | 0.14 | 0.11 | 0.03 | 21.43 |
Mar-86 | 0.43 | 0.18 | 0.25 | 0.07 | 0.31 | 0.22 | 0.22 | 0.18 | 0.04 | 17.05 |
Apr-86 | 0.43 | 0.17 | 0.26 | 0.07 | 0.34 | 0.24 | 0.24 | 0.19 | 0.05 | 20.17 |
May-86 | 0.45 | 0.17 | 0.28 | 0.07 | 0.37 | 0.26 | 0.26 | 0.21 | 0.05 | 18.92 |
Average saving in evaporation loss (%) | 19.26 |