| Report Year: 2009 |
| Lake Minnewashta, Dickinson County |
| Carbon Balance Table |
| Parameter | 7/8/2009 | 6/3/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 203 | 217 | 210.0 | - | 203.3 | 176.6 | 199.2 | 209.2 | 156.3 | 196.0 | 175.3 | 199.0 |
| Dissolved Organic Carbon (mM) | 0.51 | 0.55 | 0.53 | - | 0.57 | 0.55 | 0.41 | 0.77 | 0.89 | 0.88 | - | - |
| Temperature (oC) | 23.8 | 19.5 | 21.7 | - | 22.9 | 22.3 | 21.0 | 22.1 | 21.7 | 20.8 | 22.4 | 23.5 |
| Specific Conductivity (μS/cm) | 450.0 | 490.0 | 470.00 | - | 486.98 | 504.25 | 526.52 | 565.51 | 525.87 | 535.45 | 500.50 | 509.27 |
| pH | 8.1 | 8.5 | 8.3 | - | 8.2 | 8.7 | 8.6 | 8.6 | 8.4 | 8.5 | 8.6 | 8.6 |
| I (Ionic Strength ?) | 0.0788 | 0.0858 | 0.0823 | - | 0.0852 | 0.0882 | 0.0933 | 0.0990 | 0.0920 | 0.0937 | 0.0876 | 0.0891 |
| Dissolved Inorganic Carbon (mM) | 4.04 | 4.23 | 4.14 | - | 4.03 | 3.29 | 3.82 | 4.01 | 3.05 | 3.79 | 3.35 | 3.86 |
| pCO2 (μatm) | 1306 | 620 | 963.0 | - | 1155.4 | 272.7 | 428.1 | 489.5 | 500.8 | 538.3 | 476.4 | 471.5 |
| Equilibrium CO2 | 13.08 | 14.88 | 13.98 | - | 13.51 | 13.81 | 13.98 | 13.94 | 14.09 | 14.54 | 13.75 | 13.24 |
| CO2 (μM) | 46.15 | 24.95 | 35.55 | - | 43.30 | 9.62 | 15.96 | 18.45 | 19.01 | 20.26 | 18.74 | 16.46 |
| Δ CO2 from Equilibrium | 33.073 | 10.065 | 21.57 | - | 29.79 | -4.18 | 1.99 | 4.51 | 4.92 | 5.73 | 4.99 | 3.22 |