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 June, 2000

Grade B For June, 2000, the WQI rating at Boulder Creek at Eben G. Fine Park (BC-CAN) was Good (B) due to a WQI value of 88.6. 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 6/2000          
DO 100.5 % sat 99 0.17 16.83
Fecal Coliform 20 #/100 mL 62 0.16 9.92
pH 7.46 std units 94 0.11 10.34
Total Phosphate 0.03 mg/L PO4-P 98 0.10 9.8
Nitrates <0.03 mg/L NO3 97 0.10 9.7
Turbidity 3.04 NTU 90 0.08 7.2
totals (factors, total)       0.72 63.79
adjusted WQI         88.6

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 October, 2000 at this station

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