| Report Year: 2009 |
| Little Sioux Park Lake, Woodbury County |
| Carbon Balance Table |
| Parameter | 6/1/2009 | 7/6/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 189 | 155 | 172.0 | - | 159.7 | 148.3 | 160.0 | 167.2 | 138.3 | 160.3 | 152.3 | 168.7 |
| Dissolved Organic Carbon (mM) | 0.44 | 0.45 | 0.45 | - | 0.50 | 0.32 | 0.52 | 0.42 | 0.65 | 0.88 | - | - |
| Temperature (oC) | 22.0 | 27.8 | 24.9 | - | 25.5 | 24.2 | 25.2 | 23.2 | 23.3 | 25.7 | 23.2 | 26.2 |
| Specific Conductivity (μS/cm) | 340.0 | 330.0 | 335.00 | - | 317.50 | 299.45 | 313.32 | 368.65 | 360.00 | 476.60 | 465.59 | 353.53 |
| pH | 8.5 | 8.3 | 8.4 | - | 8.7 | 9.5 | 9.1 | 8.5 | 8.7 | 8.8 | 8.6 | 8.8 |
| I (Ionic Strength ?) | 0.0595 | 0.0578 | 0.0586 | - | 0.0556 | 0.0524 | 0.0548 | 0.0645 | 0.0630 | 0.0834 | 0.0815 | 0.0619 |
| Dissolved Inorganic Carbon (mM) | 3.68 | 3.04 | 3.36 | - | 3.01 | 2.35 | 2.85 | 3.24 | 2.64 | 2.78 | 2.89 | 3.13 |
| pCO2 (μatm) | 511 | 624 | 567.7 | - | 362.4 | 30.7 | 120.3 | 736.5 | 243.6 | 225.5 | 285.0 | 244.6 |
| Equilibrium CO2 | 13.83 | 11.68 | 12.75 | - | 12.51 | 13.03 | 12.65 | 13.47 | 13.41 | 12.41 | 13.39 | 12.63 |
| CO2 (μM) | 19.10 | 19.70 | 19.40 | - | 13.07 | 1.15 | 4.37 | 25.33 | 9.33 | 7.87 | 10.48 | 8.41 |
| Δ CO2 from Equilibrium | 5.271 | 8.027 | 6.65 | - | 0.57 | -11.88 | -8.28 | 11.86 | -4.08 | -4.54 | -2.91 | -4.23 |