Clark Lake TSI
| Date | Secchi | Total Phosphorus | Chlorophyll a | TSI (Secchi) | TSI (Phosphorus) | TSI (Chlor. a) | Avg. TSI |
| (feet) | (ug/L) | (ug/L) | |||||
| June 27, '00 | 7.5 | 12 | 1 | 48.1 | 40 | 30.6 | 39.6 |
| July 25, '00 | 7.5 | 36 | <1 | 48.1 | 55.8 | 30.6 | 44.8 |
| August 29, '00 | 5.5 | 25 | 9 | 52.6 | 50.6 | 52.2 | 51.8 |
| June 20, '01 | 9 | 17 | 2 | 45.5 | 45 | 37.4 | 42.6 |
| July 24, 01 | 10 | 9 | 2 | 43.9 | 35.8 | 37.4 | 39 |
| August 22, 01 | 10 | 22 | 4 | 43.9 | 48.7 | 44.2 | 45.6 |
| June 10, 02 | 9 | 16 | 4 | 45.5 | 44.1 | 44.2 | 44.6 |
| July 26, 02 | 10 | 22 | 5 | 43.9 | 48.7 | 46.4 | 46.3 |
| August 19, 02 | 9 | 55 | 3 | 45.5 | 61.9 | 41.4 | 49.6 |
| June 19, 03 | 9 | 21 | 4 | 45.5 | 48.1 | 44.2 | 45.9 |
| July 27, 03 | 11 | 8 | 3 | 42.6 | 34.1 | 41.4 | 39.4 |
| August 18, 03 | 12 | 158 | 1 | 41.3 | 77.2 | 30.6 | 49.7 |
| June 29, 04 | 12 | 16 | 4 | 41.3 | 44.1 | 44.2 | 43.2 |
| July 19, 04 | 12 | 13 | 1 | 41.3 | 41.1 | 30.6 | 37.7 |
| Sept 16, 04 | 10 | 12 | 4 | 43.9 | 40 | 44.2 | 42.7 |
| June 22, 2007 | 11 | 24 | 9 | 42.6 | 50 | 52.2 | 48.3 |
| July 27, 2007 | 11 | 15 | 2 | 42.6 | 43.2 | 37.4 | 41.1 |
| August 29, 2007 | 9 | 20 | 6 | 45.5 | 47.3 | 48.2 | 47 |
| September 27, 2007 | 8 | 23 | 16 | 47.2 | 49.4 | 57.8 | 51.5 |
| May 27, 2008 | 21 | 8 | 48.1 | 51 |