| Report Year: 2009 |
| Mormon Trail Lake, Adair County |
| Summary Data Table |
| Parameter | 7/13/2009 | 6/8/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 9.7 | 8.5 | 9.1 | 9.4 | 8.3 | 8.7 | 7.4 | 9.2 | 9.1 | 9.4 | 9.2 |
| Thermocline Depth (m) | 3.0 | 5.3 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 2.3 | 3.2 | 2.7 | 1.6 | 1.9 | 0.9 | 2.0 | 2.7 | 2.2 | 2.5 | 1.5 |
| Temperature(oC) | 24.5 | 21.4 | 23.0 | 25.0 | 25.5 | 24.3 | 22.8 | 23.4 | 24.6 | 23.1 | 25.4 |
| Dissolved Oxygen (mg/L) | 10.0 | 8.0 | 9.0 | 10.6 | 9.2 | 10.1 | 8.9 | 8.8 | 9.1 | 8.5 | 7.8 |
| Dissolved Oxygen Saturation (%) | 120 | 91 | 105.6 | 128.1 | 112.4 | 119.0 | 103.4 | 103.0 | 108.7 | 94.1 | 95.4 |
| Specific Conductivity (μS/cm) | 210.0 | 270.0 | 240.0 | 265.9 | 227.5 | 256.4 | 259.7 | 263.2 | 287.9 | 239.7 | 261.9 |
| Turbidity (NTU) | 2.5 | 1.8 | 2.2 | 8.9 | 4.9 | 12.9 | 6.9 | 5.4 | 3.2 | 3.6 | 5.6 |
| Chlorophyll a (μg/L) | 4.0 | 1 | 2.5 | 24.7 | 12.4 | 45.8 | 18.0 | 9.2 | 4.0 | 4.5 | 7.0 |
| Total Phosphorus as P (μg/L) | 26 | 18 | 22 | 33 | 23 | 41 | 29 | 36 | 23 | 40 | 105 |
| SRP as P (μg/L) | 3 | - | 3 | - | - | 1 | 1 | 1 | 1 | - | - |
| Total Nitrogen as N (mg/L) | 0.88 | 0.28 | 0.53 | 0.65 | 0.89 | 0.99 | 0.84 | 0.72 | 0.64 | 1.09 | 1.14 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 73 | 104 | 89 | 16 | 16 | 16 | 16 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 8.8 | 12.6 | 10.7 | 0.4 | 2.3 | 1.2 | 1.4 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.15 | 0.12 | 0.12 | 0.12 | 0.31 | 0.30 |
| TN:TP ratio | 33 | 10 | 22 | 18 | 39 | 25 | 29 | 21 | 29 | 30 | 11 |
| pH | 8.4 | 8.5 | 8.4 | 8.5 | 8.8 | 8.5 | 8.5 | 8.4 | 8.4 | 8.1 | 7.6 |
| Alkalinity as CaCO3 (mg/L) | 102 | 125 | 114 | 123 | 111 | 115 | 118 | 82 | 111 | 119 | 126 |
| Silica as Si (mg/L) | - | - | - | - | - | 3.38 | 1.88 | 1.15 | 1.10 | - | - |
| Dissolved Organic Carbon (mg/L) | 4.75 | 5.45 | 5.10 | 7.09 | 5.13 | 6.74 | 6.54 | 8.80 | 6.85 | - | - |
| Inorganic Suspended Solids (mg/L) | 1 | - | 1 | 4 | 5 | 18 | 2 | 5 | 3 | 3 | 5 |
| Volatile Suspended Solids (mg/L) | 3 | 3 | 3 | 4 | 3 | 8 | 3 | 3 | 3 | 1 | 6 |
| Total Suspended Solids (mg/L) | 3 | 2 | 3 | 8 | 7 | 19 | 5 | 8 | 6 | 4 | 11 |
| Carlson Trophic State Index (Secchi)* | 48 | 43 | 46 | 53 | 51 | 62 | 50 | 46 | 49 | 47 | 54 |
| Carlson Trophic State Index (Chl a)* | 44 | 31 | 40 | 62 | 55 | 68 | 59 | 52 | 44 | 45 | 50 |
| Carlson Trophic State Index (TP)* | 51 | 45 | 49 | 55 | 50 | 58 | 53 | 56 | 49 | 57 | 71 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |