| Report Year: 2011 |
| Rudd Lake, Floyd County |
| Summary Data Table |
| Parameter | 6/7/2011 | 7/26/2011 | 9/7/2011 | 2011 | 2010 | 2009 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
| Lake Depth (m) | 4.9 | 4.4 | 4.7 | 4.7 | - | - | - | - | - | - | - | - | - | - |
| Thermocline Depth (m) | 2.8 | 3.6 | Nil | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Secchi Disk Depth (m) | 1.6 | 2.2 | 1.9 | 1.9 | - | - | - | - | - | - | - | - | - | - |
| Temperature(oC) | 25.0 | 29.3 | 21.8 | 25.4 | - | - | - | - | - | - | - | - | - | - |
| Dissolved Oxygen (mg/L) | 9.2 | 8.7 | 7.5 | 8.5 | - | - | - | - | - | - | - | - | - | - |
| Dissolved Oxygen Saturation (%) | 112 | 113 | 86 | 103.7 | - | - | - | - | - | - | - | - | - | - |
| Specific Conductivity (μS/cm) | 380.0 | 390.0 | 350.0 | 373.3 | - | - | - | - | - | - | - | - | - | - |
| Turbidity (NTU) | 2.5 | 2.6 | 6.2 | 3.8 | - | - | - | - | - | - | - | - | - | - |
| Chlorophyll a (μg/L) | <5 | <5 | <5 | <5 | - | - | - | - | - | - | - | - | - | - |
| Total Phosphorus as P (μg/L) | 18.3 | <15.5 | 17.1 | 16.1 | - | - | - | - | - | - | - | - | - | - |
| SRP as P (μg/L) | <11 | <11 | <11 | <11 | - | - | - | - | - | - | - | - | - | - |
| TKN (mg/L) | 1.1 | 1.9 | 0.6 | 1 | - | - | - | - | - | - | - | - | - | - |
| Total Dissolved Solids (g/L) | 0.3 | 0.3 | 0.2 | 0.2 | - | - | - | - | - | - | - | - | - | - |
| Total Nitrogen as N (mg/L) | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3 + NH4+) as N (μg/L) | <145 | <145 | <145 | <145 | - | - | - | - | - | - | - | - | - | - |
| (Phenate)Ammonia Nitrogen (NH3) as N (un-ionized)(μg/L) | <PQL | <PQL | <PQL | <PQL | - | - | - | - | - | - | - | - | - | - |
| Nitrate + Nitrite (NO3 + NO2) as N (mg/L) | <0.4 | <0.4 | <0.4 | <0.4 | - | - | - | - | - | - | - | - | - | - |
| TN:TP ratio | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| pH | 8.2 | 8.2 | 8.0 | 8.1 | - | - | - | - | - | - | - | - | - | - |
| Alkalinity as CaCO3 (mg/L) | 137 | 132 | 100 | 123 | - | - | - | - | - | - | - | - | - | - |
| Silica as Si (mg/L) | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Dissolved Organic Carbon (mg/L) | <7.6 | <7.6 | <7.6 | <7.6 | - | - | - | - | - | - | - | - | - | - |
| Inorganic Suspended Solids (mg/L) | 5 | <5 | <5 | <5 | - | - | - | - | - | - | - | - | - | - |
| Volatile Suspended Solids (mg/L) | <8 | <8 | <8 | <8 | - | - | - | - | - | - | - | - | - | - |
| Total Suspended Solids (mg/L) | 8 | <6 | <6 | <6 | - | - | - | - | - | - | - | - | - | - |
| Carlson Trophic State Index (Secchi)* | 54 | 49 | 51 | 51 | - | - | - | - | - | - | - | - | - | - |
| Carlson Trophic State Index (Chl a)* | 37 | 39 | 39 | 38 | - | - | - | - | - | - | - | - | - | - |
| Carlson Trophic State Index (TP)* | 46 | 41 | 45 | 44 | - | - | - | - | - | - | - | - | - | - |
| *Index values generally range between 0 and 100, with increasing values indicating more eutrophic conditions. |