Rock Creek Environmental Studies Center

2003 Bronson Creek water quality data

10/08/2003 HydroLab

Bronson Creek Location pH Dissolved Oxygen Concentration Temp. Dissolved Oxygen % Specific Conductivity Salinity Total Dissolved Solids Oxygen Reduction Potential
ppm °C % uS/cm ppt ppm mV
Below Hwy 26 Culvert 7.33 6.38 14.18 62.0 264 0.13 169 284
Wooded Area 7.24 6.32 14.22 61.2 263 0.13 168 274
North Side of Pool 7.27 6.56 15.44 66.8 262 0.12 168 205
Above Footbridge 7.51 8.19 16.15 83.7 256 0.12 164 245
Above Cornell Rd. 7.54 7.94 16.08 80.1 245 0.12 157 221
Wetland Outlet 7.26 3.62 16.85 37.1 152 0.07 97 204

10/08/2003 LaMotte Kit

Bronson Creek Location pH Dissolved Oxygen Concentration Carbon Dioxide Concentration Silicon Dioxide Concentration Hardness Nitrate Phosphate
ppm ppm ppm ppm
Below Hwy 26 Culvert 7.0 8.0 10 20 92 <0.2 <0.2
Above Footbridge 7.0 9.8 6 20 80 <0.2 <0.2
Wetland Outlet 6.5 3.0 18 12 60 <0.2 <0.2

10/15/2003 HydroLab

Bronson Creek Location pH Dissolved Oxygen Concentration Temp. Dissolved Oxygen % Specific Conductivity Salinity Total Dissolved Solids Oxygen Reduction Potential
ppm °C % uS/cm ppt ppm mV
Below Hwy 26 Culvert 7.38 7.94 11.69 74.0 189 0.09 120 284
Wooded Area 7.44 8.15 11.75 76.1 190 0.09 120 273
North Side of Pool 7.44 10.50 12.42 103.8 193 0.09 123 218
Above Footbridge 7.40 8.90 12.26 82.2 189 0.09 121 246
Above Cornell Rd. 7.50 10.81 12.44 114.3 168 0.07 107 243
Wetland Outlet 7.43 6.57 12.93 62.4 87 0.03 56 220

10/15/2003 LaMotte Kit

Bronson Creek Location pH Dissolved Oxygen Concentration Carbon Dioxide Concentration Silicon Dioxide Concentration Hardness Nitrate Phosphate
ppm ppm ppm ppm
Below Hwy 26 Culvert 7.0 6.75 8 10 60 <0.2 <0.2
North Side of Pool 7.0 9.75 6 10 44 <0.2 <0.2
Above Footbridge 6.5 6.0 8 7 44 <0.2 <0.2
Wetland Outlet 7 10.5 5 7 64 <0.2 <0.2

10/22/2003 HydroLab

Bronson Creek Location pH Dissolved Oxygen Concentration Temp. Dissolved Oxygen % Specific Conductivity Salinity Total Dissolved Solids Oxygen Reduction Potential
ppm °C % uS/cm ppt ppm mV
Laidlaw Rd 7.48 8.40 11.49 77.0 238 0.11 158 157
Kaiser Rd. 7.32 6.94 11.43 68.5 293 0.14 188 242
West Union & Bethany 7.25 8.27 11.92 77.0 274 0.13 176 249
Hwy. 26 7.50 9.08 11.30 83.0 275 0.13 176 243
Cornell Rd. 7.60 9.42 11.98 88.7 259 0.12 166 233

10/22/2003 LaMotte Kit

Bronson Creek Location pH Dissolved Oxygen Concentration Carbon Dioxide Concentration Silicon Dioxide Concentration Hardness Nitrate Phosphate
ppm ppm ppm ppm
Below Hwy 26 Culvert 7.0 6.8 8.5 24 94 <0.2 <0.2
Above Footbridge 7.0 5.5 7.0 10 66 <0.2 <0.2
Wetland Outlet 6.0 2.0 13.0 6 75 <0.2 <0.2