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North Boulder Creek at Boulder Falls |
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North Boulder Creek at Boulder Falls |
For May, 2007 the WQI rating at North Boulder Creek at Boulder Falls (NBC-FALLS) was Excellent (A) due to a WQI value of 90.48.
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 | 96.60 | 97.54 | 0.17 | 16.58 |
| Fecal Coliform | #/100 mL | Data Unavailable | |||
| pH | pH | 7.07 | 89.02 | 0.11 | 9.79 |
| Total Phosphate | mg PO4/L | 0.07 | 95.32 | 0.10 | 9.53 |
| Nitrates | mg NO3/L | Data Unavailable | |||
| Turbidity | NTU | 9.19 | 76.07 | 0.08 | 6.09 |
| Total Solids | mg/l | 76.00 | 85.16 | 0.07 | 5.96 |
| Totals (factors, total) | 0.53 | 47.95 | |||
| Adjusted WQI | 90.48 | ||||
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.