| Report Year: 2009 |
| Dog Creek Lake, O'Brien County |
| Carbon Balance Table |
| Parameter | 6/2/2009 | 7/7/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 198 | 178 | 188.0 | - | - | 226.0 | 200.3 | 153.6 | 160.7 | 185.8 | 153.7 | 205.0 |
| Dissolved Organic Carbon (mM) | 0.56 | 0.51 | 0.53 | - | - | 0.38 | 0.48 | 0.56 | 0.82 | 1.08 | - | - |
| Temperature (oC) | 20.1 | 24.2 | 22.1 | - | - | 16.3 | 22.9 | 21.4 | 21.6 | 20.6 | 21.8 | 24.8 |
| Specific Conductivity (μS/cm) | 440.0 | 410.0 | 425.00 | - | - | 580.46 | 520.91 | 444.72 | 482.52 | 485.16 | 544.88 | 658.52 |
| pH | 8.6 | 8.5 | 8.5 | - | - | 8.7 | 8.6 | 8.5 | 8.7 | 8.5 | 8.6 | 8.6 |
| I (Ionic Strength ?) | 0.0770 | 0.0718 | 0.0744 | - | - | 0.1016 | 0.0912 | 0.0778 | 0.0844 | 0.0849 | 0.0954 | 0.1152 |
| Dissolved Inorganic Carbon (mM) | 3.81 | 3.47 | 3.64 | - | - | 4.32 | 3.82 | 2.97 | 3.05 | 3.62 | 2.87 | 3.87 |
| pCO2 (μatm) | 396 | 536 | 466.0 | - | - | 357.9 | 488.3 | 361.2 | 340.1 | 554.4 | 330.8 | 464.7 |
| Equilibrium CO2 | 14.63 | 12.95 | 13.79 | - | - | 16.42 | 13.58 | 14.24 | 14.12 | 14.65 | 13.98 | 12.75 |
| CO2 (μM) | 15.67 | 18.75 | 17.21 | - | - | 15.88 | 19.49 | 14.24 | 14.43 | 23.05 | 13.07 | 16.50 |
| Δ CO2 from Equilibrium | 1.038 | 5.800 | 3.42 | - | - | -0.54 | 5.91 | 0.01 | 0.31 | 8.41 | -0.90 | 3.75 |