| Report Year: 2009 |
| Badger Lake, Webster County |
| Summary Data Table |
| Parameter | 6/4/2009 | 7/28/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 4.9 | 4.7 | 4.8 | - | 5.1 | 5.1 | 5.2 | 5.1 | 5.1 | 5.1 | 5.2 |
| Thermocline Depth (m) | 1.7 | 3.5 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 1.5 | 1.5 | 1.5 | - | 0.5 | 1.3 | 1.2 | 1.4 | 0.7 | 1.1 | 0.8 |
| Temperature(oC) | 18.4 | 24.3 | 21.4 | - | 19.0 | 19.8 | 21.0 | 19.4 | 21.6 | 21.2 | 22.0 |
| Dissolved Oxygen (mg/L) | 14.2 | 13.3 | 13.8 | - | 14.8 | 11.0 | 11.3 | 11.7 | 12.8 | 10.0 | 10.2 |
| Dissolved Oxygen Saturation (%) | 151 | 159 | 155.1 | - | 159.7 | 121.4 | 130.3 | 127.0 | 145.5 | 109.5 | 122.6 |
| Specific Conductivity (μS/cm) | 680.0 | 610.0 | 645.0 | - | 648.7 | 676.2 | 585.6 | 720.7 | 644.4 | 750.8 | 699.0 |
| Turbidity (NTU) | 2.5 | 4.6 | 3.6 | - | 223.2 | 16.7 | 44.1 | 99.6 | 17.4 | 16.1 | 47.3 |
| Chlorophyll a (μg/L) | 9.0 | 25.0 | 17.0 | - | 58.7 | 46.7 | 11.0 | 13.4 | 84.8 | 11.9 | 6.4 |
| Total Phosphorus as P (μg/L) | 39 | 48 | 43 | - | 46 | 48 | 109 | 46 | 100 | 120 | 242 |
| SRP as P (μg/L) | - | - | - | - | - | 1 | 166 | 8 | 1 | - | - |
| Total Nitrogen as N (mg/L) | 11.97 | 6.05 | 9.01 | - | 14.26 | 12.71 | 12.81 | 15.66 | 12.24 | 15.84 | 12.72 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 16 | 24 | 16 | - | 16 | 56 | 46 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 0.1 | 2.9 | 1.5 | - | 0.5 | 1.5 | 1.5 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 12.16 | 5.21 | 8.69 | - | 16.62 | 11.79 | 12.15 | 14.79 | 11.91 | 16.68 | 11.42 |
| TN:TP ratio | 305 | 127 | 216 | - | 313 | 350 | 240 | 450 | 216 | 233 | 74 |
| pH | 8.5 | 8.4 | 8.4 | - | 8.2 | 8.2 | 8.3 | 8.2 | 8.5 | 8.0 | 7.7 |
| Alkalinity as CaCO3 (mg/L) | 297 | 226 | 262 | - | 209 | 212 | 168 | 201 | 205 | 219 | 176 |
| Silica as Si (mg/L) | - | - | - | - | - | 10.14 | 11.22 | 11.22 | 12.13 | - | - |
| Dissolved Organic Carbon (mg/L) | 3.52 | 3.46 | <3.6 | - | <3.6 | 4.44 | 14.82 | 5.82 | 9.44 | - | - |
| Inorganic Suspended Solids (mg/L) | 6 | 3 | 5 | - | 15 | 4 | 19 | 6 | 6 | 10 | 17 |
| Volatile Suspended Solids (mg/L) | 4 | 6 | 5 | - | 9 | 5 | 7 | 4 | 12 | 4 | 8 |
| Total Suspended Solids (mg/L) | 10 | 9 | 10 | - | 24 | 9 | 26 | 10 | 18 | 14 | 25 |
| Carlson Trophic State Index (Secchi)* | 54 | 55 | 54 | - | 72 | 56 | 58 | 56 | 65 | 58 | 62 |
| Carlson Trophic State Index (Chl a)* | 52 | 62 | 58 | - | 71 | 68 | 54 | 56 | 74 | 55 | 49 |
| Carlson Trophic State Index (TP)* | 57 | 60 | 59 | - | 59 | 60 | 72 | 59 | 71 | 73 | 83 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |