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Boulder Creek Below Coal Creek |
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Boulder Creek Below Coal Creek |
For July, 2002 the WQI rating at Boulder Creek Below Coal Creek (BC-bCC) was Bad (D) due to a WQI value of 45.81.
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 | 161.50 | 50.00 | 0.17 | 8.50 |
| Fecal Coliform | #/100 mL | 230.00 | 32.12 | 0.16 | 5.14 |
| pH | pH | 8.65 | 62.79 | 0.11 | 6.91 |
| Total Phosphate | mg PO4/L | 1.28 | 31.45 | 0.10 | 3.15 |
| Nitrates | mg NO3/L | 2.70 | 47.41 | 0.10 | 4.74 |
| Turbidity | NTU | 13.00 | 68.36 | 0.08 | 5.47 |
| Total Solids | mg/l | 479.00 | 32.74 | 0.07 | 2.29 |
| Totals (factors, total) | 0.79 | 36.19 | |||
| Adjusted WQI | 45.81 | ||||
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.