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Boulder Creek above Dry Creek |
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Boulder Creek above Dry Creek |
For February, 2005 the WQI rating at Boulder Creek above Dry Creek (BC-aDC) was Good (B) due to a WQI value of 71.11.
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 | 104.10 | 98.68 | 0.17 | 16.77 |
| Fecal Coliform | #/100 mL | 20.00 | 61.54 | 0.16 | 9.85 |
| pH | pH | 7.79 | 91.31 | 0.11 | 10.04 |
| Total Phosphate | mg PO4/L | 2.33 | 21.94 | 0.10 | 2.19 |
| Nitrates | mg NO3/L | Data Unavailable | |||
| Turbidity | NTU | 4.70 | 85.57 | 0.08 | 6.85 |
| Total Solids | mg/l | 374.00 | 48.06 | 0.07 | 3.36 |
| Totals (factors, total) | 0.69 | 49.07 | |||
| Adjusted WQI | 71.11 | ||||
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.