City of Boulder/USGS Water Quality Monitoring
Boulder Creek Watershed
Boulder Creek Water Quality Index

WQI at Boulder Creek at Eben G. Fine Park for October, 2000

Grade B For October, 2000, the WQI rating at Boulder Creek at Eben G. Fine Park (BC-CAN) was Good (B) due to a WQI value of 88.2. The chart below details the WQI calulations at this site. See the detailed explanation of the WQI method for more information.

6-parameter Test result unit Q-value weight factor total
BC-CAN 10/2000          
DO 100.2 % sat 99 0.17 16.83
Fecal Coliform 20 #/100 mL 63 0.16 10.08
pH 7.82 std units 88 0.11 9.68
Total Phosphate 0.036 mg/L PO4-P 98 0.10 9.8
Nitrates 0.43 mg/L NO3 97 0.10 9.7
Turbidity 1.74 NTU 93 0.08 7.44
totals (factors, total)       0.72 63.53
adjusted WQI         88.2

The WQI is computed by converting measured Water Quality Parameters to "Q-Values" using charts developed by the National Sanitation Foundation (NSF) water quality scientists. The Q-Values are then multiplied by a weighting factor based on the importance of that water quality parameter.

WQI at Upstream Station: Middle Boulder Creek Above North Boulder Creek Confluence

WQI at Downstream Station: Boulder Creek at 30th St.

WQI at for June, 2000 at this station

Return to WQI map for October, 2000
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Last Page Update - Tuesday December 27, 2005