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Boulder Creek above Dry Creek |
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Boulder Creek above Dry Creek |
For March, 2002 the WQI rating at Boulder Creek above Dry Creek (BC-aDC) was Medium (C) due to a WQI value of 59.69.
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 | 20.00 | 61.54 | 0.16 | 9.85 |
| pH | pH | 8.80 | 57.05 | 0.11 | 6.28 |
| Total Phosphate | mg PO4/L | 2.30 | 22.10 | 0.10 | 2.21 |
| Nitrates | mg NO3/L | 8.50 | 18.93 | 0.10 | 1.89 |
| Turbidity | NTU | 3.22 | 88.69 | 0.08 | 7.10 |
| Total Solids | mg/l | 414.00 | 42.90 | 0.07 | 3.00 |
| Totals (factors, total) | 0.79 | 47.15 | |||
| Adjusted WQI | 59.69 | ||||
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.