| Report Year: 2009 |
| Rathbun Reservoir, Appanoose County |
| Carbon Balance Table |
| Parameter | 6/17/2009 | 7/21/2009 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Alkalinity as CaCO3 (mg/L) | 85 | 88 | 86.5 | - | 94.6 | 115.3 | 102.7 | 99.0 | 71.2 | 96.0 | 85.7 | 133.0 |
| Dissolved Organic Carbon (mM) | 0.47 | 0.43 | 0.45 | - | 0.57 | 0.45 | 0.57 | 0.46 | 0.68 | 0.75 | - | - |
| Temperature (oC) | 19.8 | 23.1 | 21.5 | - | 24.7 | 24.1 | 23.7 | 22.2 | 23.7 | 25.0 | 20.8 | 24.0 |
| Specific Conductivity (μS/cm) | 240.0 | 240.0 | 240.00 | - | 254.38 | 302.45 | 281.52 | 280.28 | 273.63 | 399.43 | 216.84 | 249.74 |
| pH | 7.8 | 7.8 | 7.8 | - | 8.0 | 8.0 | 8.5 | 8.3 | 8.1 | 7.8 | 8.0 | 8.3 |
| I (Ionic Strength ?) | 0.0420 | 0.0420 | 0.0420 | - | 0.0445 | 0.0529 | 0.0493 | 0.0490 | 0.0484 | 0.0835 | 0.0379 | 0.0437 |
| Dissolved Inorganic Carbon (mM) | 1.73 | 1.80 | 1.76 | - | 1.90 | 2.33 | 1.98 | 1.95 | 1.43 | 1.95 | 1.73 | 2.62 |
| pCO2 (μatm) | 1125 | 1322 | 1223.6 | - | 1521.2 | 1766.3 | 441.0 | 517.0 | 609.1 | 1269.0 | 787.1 | 590.2 |
| Equilibrium CO2 | 14.75 | 13.36 | 14.05 | - | 12.80 | 13.02 | 13.20 | 13.75 | 13.75 | 12.21 | 14.40 | 13.01 |
| CO2 (μM) | 44.84 | 47.74 | 46.29 | - | 55.08 | 59.11 | 16.15 | 18.84 | 21.17 | 41.96 | 31.12 | 20.77 |
| Δ CO2 from Equilibrium | 30.094 | 34.384 | 32.24 | - | 42.28 | 46.09 | 2.94 | 5.09 | 7.43 | 29.75 | 16.71 | 7.76 |