| Report Year: 2009 |
| Badger Creek Lake, Madison County |
| Summary Data Table |
| Parameter | 6/18/2009 | 7/20/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 5.3 | 4.9 | 5.1 | - | - | 6.0 | 6.1 | 6.1 | 6.5 | 5.4 | 6.1 |
| Thermocline Depth (m) | Nil | Nil | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 0.5 | 0.8 | 0.6 | - | - | 0.7 | 0.2 | 0.7 | 0.6 | 1.2 | 0.5 |
| Temperature(oC) | 22.1 | 23.0 | 22.5 | - | - | 26.1 | 24.0 | 23.9 | 25.6 | 23.7 | 23.9 |
| Dissolved Oxygen (mg/L) | 8.3 | 5.5 | 6.9 | - | - | 10.6 | 12.4 | 9.1 | 7.0 | 13.0 | 4.8 |
| Dissolved Oxygen Saturation (%) | 95 | 65 | 79.9 | - | - | 131.6 | 148.6 | 110.3 | 86.3 | 152.6 | 57.5 |
| Specific Conductivity (μS/cm) | 290.0 | 290.0 | 290.0 | - | - | 269.5 | 242.7 | 284.4 | 325.6 | 248.6 | 286.0 |
| Turbidity (NTU) | 111.8 | 14.6 | 63.2 | - | - | 36.4 | 90.0 | 54.5 | 31.7 | 33.4 | 26.2 |
| Chlorophyll a (μg/L) | 30.0 | 18.0 | 24.0 | - | - | 159.3 | 80.2 | 23.0 | 62.3 | 67.2 | 34.5 |
| Total Phosphorus as P (μg/L) | 150 | 99 | 125 | - | - | 262 | 292 | 353 | 290 | 210 | 280 |
| SRP as P (μg/L) | - | - | - | - | - | 126 | 129 | 164 | 138 | - | - |
| Total Nitrogen as N (mg/L) | 2.69 | 1.53 | 2.11 | - | - | 2.03 | 2.88 | 2.48 | 1.50 | 1.68 | 1.80 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 89 | 83 | 86 | - | - | 60 | 194 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 7.5 | 19.6 | 13.6 | - | - | 15.4 | 20.6 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 1.47 | 0.40 | 0.94 | - | - | 0.72 | 1.22 | 0.71 | 0.15 | 0.21 | 0.19 |
| TN:TP ratio | 18 | 15 | 17 | - | - | 18 | 11 | 12 | 6 | 14 | 7 |
| pH | 8.3 | 8.8 | 8.6 | - | - | 9.1 | 9.2 | 9.0 | 8.5 | 8.4 | 7.4 |
| Alkalinity as CaCO3 (mg/L) | 139 | 131 | 135 | - | - | 121 | 96 | 86 | 131 | 108 | 149 |
| Silica as Si (mg/L) | - | - | - | - | - | 5.98 | 10.57 | 5.65 | 5.77 | - | - |
| Dissolved Organic Carbon (mg/L) | 3.89 | 4.07 | 3.98 | - | - | 6.97 | 6.64 | 12.02 | 11.15 | - | - |
| Inorganic Suspended Solids (mg/L) | 52 | 16 | 34 | - | - | 9 | 23 | 8 | 10 | 9 | 5 |
| Volatile Suspended Solids (mg/L) | 10 | - | 10 | - | - | 22 | 28 | 21 | 10 | 9 | 5 |
| Total Suspended Solids (mg/L) | 62 | 16 | 39 | - | - | 30 | 51 | 28 | 19 | 19 | 11 |
| Carlson Trophic State Index (Secchi)* | 72 | 64 | 67 | - | - | 66 | 86 | 64 | 67 | 58 | 71 |
| Carlson Trophic State Index (Chl a)* | 64 | 59 | 62 | - | - | 80 | 74 | 61 | 71 | 72 | 65 |
| Carlson Trophic State Index (TP)* | 76 | 70 | 74 | - | - | 84 | 86 | 89 | 86 | 81 | 85 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |