| Report Year: 2009 |
| Moorehead Park Pond, Ida County |
| Summary Data Table |
| Parameter | 6/1/2009 | 7/6/2009 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 5.9 | 6.0 | 6.0 | 6.0 | 5.8 | 6.1 | 5.9 | 6.1 | 6.1 | 6.3 | 6.0 |
| Thermocline Depth (m) | 3.8 | 4.6 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 3.9 | 3.0 | 3.4 | 0.9 | 2.6 | 1.6 | 1.8 | 2.4 | 2.4 | 2.9 | 1.8 |
| Temperature(oC) | 20.7 | 23.2 | 22.0 | 24.0 | 23.5 | 23.4 | 22.6 | 22.5 | 23.5 | 22.1 | 25.1 |
| Dissolved Oxygen (mg/L) | 10.3 | 7.8 | 9.1 | 10.3 | 10.7 | 9.2 | 10.3 | 11.6 | 8.7 | 11.5 | 7.6 |
| Dissolved Oxygen Saturation (%) | 115 | 91 | 103.2 | 121.7 | 125.0 | 107.1 | 119.5 | 134.2 | 102.9 | 130.6 | 91.7 |
| Specific Conductivity (μS/cm) | 420.0 | 420.0 | 420.0 | 332.6 | 365.1 | 490.1 | 372.7 | 410.3 | 485.7 | 481.1 | 433.4 |
| Turbidity (NTU) | 0.9 | 4.1 | 2.5 | 9.4 | 6.1 | 9.8 | 6.4 | 2.7 | 83.5 | 20.7 | 7.7 |
| Chlorophyll a (μg/L) | 2.0 | 2.0 | 2.0 | 31.7 | 16.0 | 49.3 | 11.8 | 6.2 | 8.3 | 1.1 | 7.2 |
| Total Phosphorus as P (μg/L) | 20 | 31 | 25 | 64 | 35 | 40 | 33 | 32 | 39 | 54 | 190 |
| SRP as P (μg/L) | - | 1 | 1 | - | 2 | 1 | 1 | 1 | 1 | - | - |
| Total Nitrogen as N (mg/L) | 0.45 | 0.46 | 0.46 | 0.63 | 0.81 | 0.83 | 0.65 | 0.62 | 0.86 | 0.87 | 0.92 |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | 16 | 16 | 16 | 16 | 17 | 16 | 16 | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | 0.9 | 0.7 | 0.8 | 7.0 | 7.6 | 2.0 | 1.4 | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | 0.12 | - | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.12 | 0.14 | 0.12 | 0.14 |
| TN:TP ratio | 23 | 15 | 19 | 12 | 27 | 21 | 20 | 20 | 25 | 18 | 8 |
| pH | 8.6 | 8.5 | 8.6 | 9.0 | 9.0 | 8.5 | 8.8 | 8.7 | 8.6 | 8.3 | 8.1 |
| Alkalinity as CaCO3 (mg/L) | 236 | 201 | 219 | 161 | 190 | 205 | 176 | 166 | 193 | 162 | 222 |
| Silica as Si (mg/L) | - | - | - | - | - | 2.58 | 1.30 | 1.18 | 1.99 | - | - |
| Dissolved Organic Carbon (mg/L) | 4.46 | 4.21 | 4.34 | 6.07 | 6.18 | 5.06 | 5.47 | 8.06 | 8.83 | - | - |
| Inorganic Suspended Solids (mg/L) | 1 | 1 | 1 | 3 | 2 | 5 | 2 | 2 | 5 | 2 | 3 |
| Volatile Suspended Solids (mg/L) | 2 | 1 | 1 | 10 | 4 | 3 | 2 | 4 | 2 | 3 | 2 |
| Total Suspended Solids (mg/L) | 3 | 1 | 2 | 13 | 6 | 8 | 3 | 7 | 7 | 5 | 4 |
| Carlson Trophic State Index (Secchi)* | 41 | 44 | 42 | 61 | 46 | 53 | 51 | 47 | 47 | 45 | 52 |
| Carlson Trophic State Index (Chl a)* | 37 | 37 | 37 | 65 | 58 | 69 | 55 | 49 | 51 | 32 | 50 |
| Carlson Trophic State Index (TP)* | 47 | 54 | 51 | 64 | 55 | 57 | 55 | 54 | 57 | 62 | 80 |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |