City of Boulder/USGS Water Quality Monitoring
Water Quality Index for August, 2006 at
Boulder Creek at Eben G. Fine Park

Grade B For August, 2006 the WQI rating at Boulder Creek at Eben G. Fine Park (BC-CAN) was Good (B) due to a WQI value of 79.65. The chart below details the WQI calulations at this site. See the detailed explanation of the WQI method for more information.


Parameter Unit Parameter Value Q-value Weight Factor Total
DO% % sat 0.00 99.00 0.17 16.83
Fecal Coliform #/100 mL 80.00 44.37 0.16 7.10
pH pH 7.61 93.44 0.11 10.28
Total Phosphate mg PO4/L 0.03 98.23 0.10 9.82
Nitrates mg NO3/L Data Unavailable
Turbidity NTU 18.50 61.15 0.08 4.89
Total Solids mg/l 49.00 86.29 0.07 6.04
Totals (factors, total) 0.69 54.96
Adjusted WQI 79.65

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. These values are totaled and then divided by the sum of the weight factors.

WQI at Upstream Station: Boulder Creek at Orodell

WQI at Downstream Station: Boulder Creek at 61st St.

WQI for July at this station

WQI for September at this station

Return to WQI map for August


INVITATION: BASIN is a community project actively seeking public participation. We appreciate all feedback and welcome comments, suggestions and contributions. To find out more about how you can be involved, click here.

Home | Site Map | Glossary | Bibliography | Contributors
About BASIN | Attribution | Feedback | Search
Last Page Update - Thursday March 01, 2007