| Report Year: 2011 |
| Badger Lake, Webster County |
| Summary Data Table |
| Parameter | 5/17/2011 | 6/28/2011 | 8/17/2011 | 2011 | 2010 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 4.8 | 5.0 | 4.7 | 4.8 | 4.9 | 4.8 | - | 5.1 | 5.1 | 5.2 | 5.1 | 5.1 | 5.1 | 5.2 |
| Thermocline Depth (m) | 3.0 | 0.5 | 1.0 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 1.0 | 0.6 | 1.1 | 0.9 | 1.0 | 1.3 | - | 0.5 | 1.3 | 1.2 | 1.4 | 0.7 | 1.1 | 0.8 |
| Temperature(oC) | 15.4 | 20.5 | 27.7 | 21.2 | 18.5 | 22.2 | - | 19.0 | 19.8 | 21.0 | 19.4 | 21.6 | 21.2 | 22.0 |
| Dissolved Oxygen (mg/L) | 12.1 | 10.3 | 18.8 | 13.7 | 7.9 | 12.1 | - | 14.8 | 11.0 | 11.3 | 11.7 | 12.8 | 10.0 | 10.2 |
| Dissolved Oxygen Saturation (%) | 121 | 115 | 238 | 158.0 | 82.3 | 137.8 | - | 159.7 | 121.4 | 130.3 | 127.0 | 145.5 | 109.5 | 122.6 |
| Specific Conductivity (μS/cm) | 630.0 | 590.0 | 430.0 | 550.0 | 623.3 | 603.3 | - | 648.7 | 676.2 | 585.6 | 720.7 | 644.4 | 750.8 | 699.0 |
| Turbidity (NTU) | 5.2 | 6.2 | 6.8 | 6.1 | 6.2 | 4.3 | - | 223.2 | 16.7 | 44.1 | 99.6 | 17.4 | 16.1 | 47.3 |
| Chlorophyll a (μg/L) | 14.0 | 14.8 | 25.4 | 18.0 | 8.2 | 17.3 | - | 58.7 | 46.7 | 11.0 | 13.4 | 84.8 | 11.9 | 6.4 |
| Total Phosphorus as P (μg/L) | 39.5 | 108.2 | 79.6 | 75.8 | 153.3 | 49.7 | - | 45 | 54 | 109 | 46 | 104 | 111 | - |
| SRP as P (μg/L) | <11 | 53.1 | <11 | <11 | 81.5 | <9 | - | <1 | <1 | <1 | <1 | 1.0 | - | - |
| TKN (mg/L) | <0.5 | 0.6 | 2.0 | 1 | <0.5 | - | - | - | - | - | - | - | - | - |
| Total Dissolved Solids (g/L) | 0.4 | 0.4 | 0.3 | 0.4 | - | - | - | - | - | - | - | - | - | - |
| Total Nitrogen as N (mg/L) | - | - | - | - | - | 7.6 | - | 14.26 | 12.71 | 12.81 | 15.66 | 12.24 | 15.84 | 12.72 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | <145 | <145 | <145 | <145 | 150 | <130 | - | <26 | 57 | 42 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | <PQL | <PQL | <PQL | <PQL | <PQL | <130 | - | 0 | 2 | 1 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 8.69 | 9.84 | 3.12 | 7 | 8 | - | - | 16.35 | 11.78 | 12.15 | 14.76 | 11.92 | 16.71 | 11.47 |
| TN:TP ratio | - | - | - | - | - | 170 | - | 318 | 318 | 239 | 455 | 208 | 247 | - |
| pH | 8.3 | 8.0 | 8.8 | 8.3 | 8.0 | 8.4 | - | 8.2 | 8.2 | 8.3 | 8.2 | 8.5 | 8.0 | 7.7 |
| Alkalinity as CaCO3 (mg/L) | 271 | 238 | 169 | 226 | 254 | 244 | - | 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) | <7.6 | <7.6 | <7.6 | <7.6 | <6.4 | <6.2 | - | 3.38 | 4.44 | 14.82 | 5.82 | 9.44 | - | - |
| Inorganic Suspended Solids (mg/L) | 5 | 10 | <5 | 5 | 5 | <4 | - | 15 | 4 | 19 | 6 | 6 | 10 | 17 |
| Volatile Suspended Solids (mg/L) | <8 | <8 | <8 | <8 | <9 | <8 | - | 9 | 5 | 7 | 4 | 12 | 4 | 8 |
| Total Suspended Solids (mg/L) | 8 | 15 | 7 | 10 | 7 | 9 | - | 24 | 9 | 26 | 10 | 18 | 14 | 25 |
| Carlson Trophic State Index (Secchi)* | 60 | 67 | 59 | 62 | 60 | 56 | - | 72 | 56 | 58 | 56 | 65 | 58 | 62 |
| Carlson Trophic State Index (Chl a)* | 56 | 57 | 62 | 59 | 51 | 59 | - | 71 | 68 | 54 | 56 | 74 | 55 | 49 |
| Carlson Trophic State Index (TP)* | 57 | 72 | 67 | 67 | 77 | 60 | - | 59 | 62 | 72 | 59 | 71 | 72 | - |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |