| Report Year: 2009 |
| Meadow Lake, Adair County |
| Summary Data Table |
| Parameter | 6/8/2009 | 7/13/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 3.7 | 2.1 | 2.9 | - | - | 4.8 | 5.1 | 5.1 | 5.0 | 5.3 | 4.6 |
| Thermocline Depth (m) | Nil | Nil | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 0.7 | 0.8 | 0.7 | - | - | 0.5 | 0.5 | 0.9 | 1.5 | 1.0 | 1.0 |
| Temperature(oC) | 21.4 | 25.0 | 23.2 | - | - | 24.3 | 22.0 | 23.0 | 24.2 | 23.9 | 25.3 |
| Dissolved Oxygen (mg/L) | 9.1 | 9.0 | 9.1 | - | - | 10.1 | 6.9 | 10.2 | 8.6 | 10.8 | 7.8 |
| Dissolved Oxygen Saturation (%) | 103 | 109 | 106.1 | - | - | 118.2 | 79.3 | 116.6 | 100.5 | 129.9 | 92.6 |
| Specific Conductivity (μS/cm) | 370.0 | 360.0 | 365.0 | - | - | 283.0 | 281.0 | 240.9 | 300.0 | 249.6 | 253.4 |
| Turbidity (NTU) | 10.9 | 8.0 | 9.4 | - | - | 30.0 | 36.7 | 21.8 | 11.3 | 28.1 | 33.9 |
| Chlorophyll a (μg/L) | 30.0 | 26.0 | 28.0 | - | - | 119.0 | 53.6 | 29.8 | 25.2 | 46.9 | 40.6 |
| Total Phosphorus as P (μg/L) | 68 | 82 | 75 | - | - | 103 | 115 | 127 | 161 | 130 | 238 |
| SRP as P (μg/L) | 2 | 1 | 2 | - | - | 2 | 22 | 4 | 4 | - | - |
| Total Nitrogen as N (mg/L) | 0.28 | 1.04 | 0.62 | - | - | 1.44 | 1.69 | 1.66 | 1.11 | 1.68 | 2.14 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 29 | 30 | 30 | - | - | 24 | 154 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 2.9 | 3.0 | 3.0 | - | - | 2.4 | 8.6 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 0.12 | 0.12 | 0.12 | - | - | 0.16 | 0.36 | 0.12 | 0.13 | 0.41 | 0.15 |
| TN:TP ratio | 3 | 13 | 8 | - | - | 15 | 15 | 14 | 9 | 15 | 9 |
| pH | 8.4 | 8.3 | 8.3 | - | - | 8.2 | 8.1 | 8.6 | 8.3 | 7.9 | 8.2 |
| Alkalinity as CaCO3 (mg/L) | 167 | 170 | 169 | - | - | 127 | 117 | 72 | 120 | 95 | 109 |
| Silica as Si (mg/L) | - | - | - | - | - | 6.21 | 6.60 | 5.03 | 2.78 | - | - |
| Dissolved Organic Carbon (mg/L) | 7.36 | 5.98 | 6.67 | - | - | 7.41 | 8.42 | 12.41 | 9.55 | - | - |
| Inorganic Suspended Solids (mg/L) | 8 | 6 | 7 | - | - | 9 | 9 | 5 | 3 | 7 | 6 |
| Volatile Suspended Solids (mg/L) | 7 | 6 | 7 | - | - | 13 | 10 | 13 | 6 | 9 | 12 |
| Total Suspended Solids (mg/L) | 15 | 13 | 14 | - | - | 22 | 19 | 17 | 9 | 16 | 18 |
| Carlson Trophic State Index (Secchi)* | 66 | 63 | 65 | - | - | 70 | 70 | 61 | 54 | 61 | 60 |
| Carlson Trophic State Index (Chl a)* | 64 | 63 | 63 | - | - | 77 | 70 | 64 | 62 | 68 | 67 |
| Carlson Trophic State Index (TP)* | 65 | 68 | 66 | - | - | 71 | 73 | 74 | 77 | 74 | 83 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |