| Report Year: 2009 |
| Poll Miller Park Lake, Lee County |
| Summary Data Table |
| Parameter | 7/22/2009 | 6/16/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 8.2 | 8.5 | 8.4 | 8.1 | 8.0 | 8.5 | 8.5 | 8.7 | 8.1 | 8.5 | 7.2 |
| Thermocline Depth (m) | 3.9 | 3.2 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 1.1 | 1.6 | 1.3 | 2.7 | 1.8 | 2.8 | 2.1 | 2.0 | 1.6 | 2.4 | 1.5 |
| Temperature(oC) | 23.1 | 22.0 | 22.5 | 26.4 | 26.2 | 27.3 | 23.9 | 23.9 | 28.3 | 24.3 | 25.0 |
| Dissolved Oxygen (mg/L) | 7.4 | 10.3 | 8.8 | 7.9 | 7.6 | 9.6 | 9.4 | 8.5 | 10.9 | 10.9 | 8.4 |
| Dissolved Oxygen Saturation (%) | 86 | 118 | 102.0 | 97.7 | 94.0 | 121.3 | 112.1 | 101.2 | 140.1 | 130.6 | 100.8 |
| Specific Conductivity (μS/cm) | 300.0 | 290.0 | 295.0 | 340.0 | 396.9 | 392.9 | 344.0 | 291.7 | 320.1 | 295.8 | 274.5 |
| Turbidity (NTU) | 8.9 | 5.0 | 7.0 | 5.3 | 5.8 | 5.0 | 7.1 | 31.7 | 17.2 | 6.0 | 14.3 |
| Chlorophyll a (μg/L) | 6.0 | 11.0 | 8.5 | 5.5 | 14.5 | 21.2 | 20.5 | 17.5 | 23.9 | 5.4 | 19.9 |
| Total Phosphorus as P (μg/L) | 36 | 46 | 41 | 23 | 31 | 34 | 36 | 51 | 36 | 30 | 109 |
| SRP as P (μg/L) | - | - | - | 1 | - | 2 | 2 | 4 | 1 | - | - |
| Total Nitrogen as N (mg/L) | 0.83 | 0.76 | 0.80 | 0.68 | 0.80 | 0.80 | 1.03 | 1.00 | 0.93 | 0.94 | 1.56 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 16 | 16 | 16 | 23 | 16 | 50 | 21 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 1.9 | 1.1 | 1.5 | 3.7 | 1.1 | 5.8 | 2.9 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 0.12 | 0.15 | 0.12 | 0.12 | 0.12 | 0.16 | 0.17 | 0.19 | 0.19 | 0.18 | 0.50 |
| TN:TP ratio | 23 | 17 | 20 | 32 | 26 | 26 | 28 | 23 | 27 | 39 | 27 |
| pH | 8.5 | 8.9 | 8.7 | 8.6 | 8.5 | 8.4 | 8.5 | 8.4 | 8.8 | 8.2 | 7.2 |
| Alkalinity as CaCO3 (mg/L) | 113 | 115 | 114 | 133 | 139 | 144 | 128 | 82 | 109 | 111 | 135 |
| Silica as Si (mg/L) | - | - | - | - | - | 1.69 | 1.80 | 1.82 | 2.74 | - | - |
| Dissolved Organic Carbon (mg/L) | 5.44 | 5.90 | 5.67 | 6.40 | 6.12 | 6.81 | 4.91 | 9.74 | 9.98 | - | - |
| Inorganic Suspended Solids (mg/L) | 4 | 3 | 3 | 1 | 2 | 3 | 2 | 8 | 14 | 4 | 4 |
| Volatile Suspended Solids (mg/L) | 3 | 6 | 5 | 5 | 4 | 5 | 4 | 5 | 7 | 3 | 4 |
| Total Suspended Solids (mg/L) | 8 | 9 | 8 | 5 | 6 | 7 | 6 | 13 | 14 | 7 | 8 |
| Carlson Trophic State Index (Secchi)* | 59 | 53 | 56 | 46 | 52 | 45 | 49 | 50 | 53 | 47 | 54 |
| Carlson Trophic State Index (Chl a)* | 48 | 54 | 52 | 47 | 57 | 61 | 60 | 59 | 62 | 47 | 60 |
| Carlson Trophic State Index (TP)* | 56 | 59 | 58 | 49 | 54 | 55 | 56 | 61 | 56 | 53 | 72 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |