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

Grade B For February, 2006 the WQI rating at Boulder Creek at Eben G. Fine Park (BC-CAN) was Good (B) due to a WQI value of 72.85. 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 101.20 98.68 0.17 16.77
Fecal Coliform #/100 mL 490.00 23.85 0.16 3.82
pH pH 8.77 58.36 0.11 6.42
Total Phosphate mg PO4/L 0.03 98.23 0.10 9.82
Nitrates mg NO3/L Data Unavailable
Turbidity NTU 1.30 93.93 0.08 7.51
Total Solids mg/l 81.00 84.52 0.07 5.92
Totals (factors, total) 0.69 50.26
Adjusted WQI 72.85

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 January at this station

WQI for March at this station

Return to WQI map for February


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