| Report Year: 2009 |
| Brushy Creek Lake, Webster County |
| Carbon Balance Table |
| Parameter | 6/4/2009 | 7/8/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 260 | 182 | 221.0 | - | 174.2 | 178.8 | 169.7 | 171.0 | 125.3 | 171.7 | 152.0 | 176.7 |
| Dissolved Organic Carbon (mM) | 0.40 | 0.34 | 0.37 | - | 1.69 | 0.37 | 0.46 | 1.31 | 0.60 | 0.63 | - | - |
| Temperature (oC) | 17.8 | 24.4 | 21.1 | - | 21.5 | 23.2 | 22.6 | 21.0 | 18.9 | 23.6 | 19.8 | 24.0 |
| Specific Conductivity (μS/cm) | 570.0 | 500.0 | 535.00 | - | 577.90 | 591.03 | 516.89 | 526.53 | 648.42 | 570.30 | 511.66 | 478.58 |
| pH | 8.0 | 8.6 | 8.3 | - | 8.2 | 8.6 | 8.6 | 8.6 | 8.6 | 8.4 | 8.7 | 8.6 |
| I (Ionic Strength ?) | 0.0998 | 0.0875 | 0.0936 | - | 0.1011 | 0.1034 | 0.0905 | 0.0921 | 0.1135 | 0.0998 | 0.0895 | 0.0838 |
| Dissolved Inorganic Carbon (mM) | 5.24 | 3.49 | 4.36 | - | 3.46 | 3.42 | 3.25 | 3.27 | 2.40 | 3.35 | 2.86 | 3.38 |
| pCO2 (μatm) | 2235 | 389 | 1312.4 | - | 1101.7 | 387.4 | 369.8 | 361.6 | 255.0 | 591.4 | 432.5 | 353.7 |
| Equilibrium CO2 | 15.70 | 12.86 | 14.28 | - | 14.09 | 13.34 | 13.77 | 14.30 | 15.27 | 13.22 | 14.92 | 13.06 |
| CO2 (μM) | 94.88 | 13.53 | 54.20 | - | 42.21 | 14.09 | 14.41 | 13.45 | 10.46 | 20.79 | 19.27 | 12.75 |
| Δ CO2 from Equilibrium | 79.173 | 0.668 | 39.92 | - | 28.12 | 0.76 | 0.63 | -0.85 | -4.81 | 7.57 | 4.36 | -0.31 |