Rock Creek Environmental Studies Center

2006 Bronson Creek water quality data

10/11/2006 HydroLab (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % 115.0 Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L) Turbidity NTU’s
Below Hwy 26 Culvert 7.86 7.89 11.40 72.5 237 0.11 154 3.90
Wooded Area 7.60 7.75 12.29 72.7 236 0.11 154 4.25
North Side of Pool 8.39 13.33 16.91 138.2 223 0.11 151 19.00
Above Footbridge 7.67 10.30 15.99 101.0 234 0.11 154 18.00
Above Cornell Road 7.32 8.57 14.59 84.5 240 0.11 156 13.50
Wetland Outlet 6.88 2.07 13.14 20.0 234 0.11 152 7.00

10/11/2006 LaMotte Kit (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Carbon Dioxide Concentration ppm (mg/L) Silicon Dioxide Concentration ppm (mg/L) Hardness ppm (mg/L) Nitrate ppm (mg/L) Phosphate ppm (mg/L)
Below Hwy 26 Culvert 8.0 11..05 12.0 0.5 140 <0.2 <0.2
Above Cornell Rd. 7.0 3.0 51.5 30.0 84 <0.2 <0.2
Wetland Outlet 6.5 6.0 26.0 3.5 88 <0.2 <0.2

10/18/2006 HydroLab (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L) Turbidity NTU’s
Below Hwy 26 Culvert 7.65 11.41 70.3 97 0.09 125 4.15
Wooded Area 7.34 11.35 67.3 97 0.09 128 4.70
North Side of Pool 9.43 12.18 88.7 95 0.09 124 5.78
Above Footbridge 9.34 12.31 87.4 194 0.09 124 10.20
Above Cornell Road 8.86 12.39 83.2 191 0.09 124 10.70
Wetland Outlet 2.18 13.13 20.9 141 0.07 92 26.70

10/18/2006 LaMotte Kit (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Carbon Dioxide Concentration ppm (mg/L) Silicon Dioxide Concentration ppm (mg/L) Hardness ppm (mg/L) Nitrate ppm (mg/L) Phosphate ppm (mg/L)
Below Hwy 26 Culvert 7.0 7.6 34.1 9.0 108 <0.2 <0.2
Above Cornell Rd. 7.0 10 9.9 2.5 90 <0.2 <0.2
Wetland Outlet 6.5 2.6 3.0 0.0 60 <0.2 <0.2

10/25/2006 HydroLab (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L) Turbidity NTU’s
Below Hwy 26 Culvert 7.48 7.90 9.29 70.1 204 0.10 133 3.60
Wooded Area 7.58 7.78 9.50 68.3 205 0.10 133 8.80
North Side of Pool 7.46 8.76 10.94 79.2 207 0.10 134 15.20
Above Footbridge 7.42 9.58 12.22 89.4 207 0.10 136 12.50
Above Cornell Road 7.34 9.03 12.20 84.1 205 0.10 133 10.75
Wetland Outlet 6.86 2.10 10.67 18.8 163 0.08 106 2.70

10/25/2006 LaMotte Kit (ESR 202)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Carbon Dioxide Concentration ppm (mg/L) Silicon Dioxide Concentration ppm (mg/L) Hardness ppm (mg/L) Nitrate ppm (mg/L) Phosphate ppm (mg/L)
Below Hwy 26 Culvert 7.8 10.0 10.0 3.0 80.0 <0.2 <0.2
Above Cornell Rd. 6.9 10.0 45.0 2.0 76.0 <0.2 <0.2
Wetland Outlet 6.5 2.2 7.0 1.0 28.0 <0.2 <0.2

Bronson Creek

05/03/2006 HydroLab (ESR 160)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L)
Storm Water Ret. Pond 7.44 6.00 16.60 63.0 299 0.14 194
Wetland Outlet 7.20 2.57 13.86 25.0 237 0.11 154
Below Footbridge 8.03 9.53 12.05 88.2 184 0.09 120
Wooded Area 7.35 6.08 10.97 55.2 84 0.09 119

05/03/2006 LaMotte Kit (ESR 160)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Carbon Dioxide Concentration ppm (mg/L) Silicon Dioxide Concentration ppm (mg/L) Hardness ppm (mg/L) Nitrate ppm (mg/L) Phosphate ppm (mg/L)
Storm Water Ret. Pond 8.0 8.2 10.0 20.0 140 <0.88 <0.2
Wetland Outlet 6.8 3.4 14.0 5.0 108 <0.88 <0.2
Below Footbridge 8.0 12.0 2.0 7.0 60 <0.44 <0.2
Wooded Area 7.5 9.8 3.0 10.0 112 <0.88 <0.2

05/04/2006 HydroLab (BI 143)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L) Turbidity NTU’s
Below Hwy 26 Culvert 7.43 7.89 12.6 74.2 189 0.09 123 7.31
Pool 8.25 12.71 13.4 122.0 212 0.10 135 12.20
Wetland Outlet 7.85 11.35 13.6 109.5 191 0.09 124 13.50

10/31/2006 HydroLab (ESR 160)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Temp. °C Dissolved Oxygen % Specific Conductivity uS/cm Salinity ppt Total Dissolved Solids ppm (mg/L) Turbidity NTU’s
Storm Water Ret. Pond 7.36 2.52 8.32 21.7 265 0.13 172 46.7
Wetland Outlet 6.88 3.26 6.19 26.5 231 0.11 150 2.8
Below Footbridge 7.18 6.77 4.68 52.8 224 0.11 145 14.5
Wooded Area 7.46 8.51 5.20 67.6 220 0.10 143 4.0

10/31/2006 LaMotte Kit (ESR 160)

Bronson Creek Location pH Dissolved Oxygen Concentration ppm (mg/L) Carbon Dioxide Concentration ppm (mg/L) Silicon Dioxide Concentration ppm (mg/L) Hardness ppm (mg/L) Nitrate ppm (mg/L) Phosphate ppm (mg/L)
Storm Water Ret. Pond 7.5 1.5 16.8 3.0 120 <0.2 0.3
Wetland Outlet 7.0 5.7 19.0 <0.5 92 <0.2 <0.2
Below Footbridge 7.0 9.2 43.0 3.5 80 <0.2 <0.2
Wooded Area 6.5 11.0 35.0 <0.5 180 <0.2 <0.2