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Boulder Creek above Dry Creek |
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Boulder Creek above Dry Creek |
For September, 2006 the WQI rating at Boulder Creek above Dry Creek (BC-aDC) was Good (B) due to a WQI value of 70.41.
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 | 102.20 | 98.84 | 0.17 | 16.80 |
| Fecal Coliform | #/100 mL | 50.00 | 49.77 | 0.16 | 7.96 |
| pH | pH | 7.29 | 92.62 | 0.11 | 10.19 |
| Total Phosphate | mg PO4/L | 1.90 | 24.52 | 0.10 | 2.45 |
| Nitrates | mg NO3/L | Data Unavailable | |||
| Turbidity | NTU | 3.82 | 88.03 | 0.08 | 7.04 |
| Total Solids | mg/l | 288.00 | 59.03 | 0.07 | 4.13 |
| Totals (factors, total) | 0.69 | 48.58 | |||
| Adjusted WQI | 70.41 | ||||
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.