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

Grade B For December, 2006 the WQI rating at Boulder Creek at Eben G. Fine Park (BC-CAN) was Good (B) due to a WQI value of 85.23. 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 96.20 97.54 0.17 16.58
Fecal Coliform #/100 mL Data Unavailable
pH pH 6.63 74.43 0.11 8.19
Total Phosphate mg PO4/L 0.06 97.26 0.10 9.73
Nitrates mg NO3/L Data Unavailable
Turbidity NTU 20.00 59.51 0.08 4.76
Total Solids mg/l 81.00 84.52 0.07 5.92
Totals (factors, total) 0.53 45.17
Adjusted WQI 85.23

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 November at this station

Return to WQI map for December


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