 |
Middle Boulder Creek Above North Boulder Creek Confluence |
|
Middle Boulder Creek Above North Boulder Creek Confluence |
For April, 2007 the WQI rating at Middle Boulder Creek Above North Boulder Creek Confluence (BC-aNBC) was Excellent (A) due to a WQI value of 90.28.
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 | 94.70 | 96.73 | 0.17 | 16.44 |
| Fecal Coliform | #/100 mL | Data Unavailable | |||
| pH | pH | 6.87 | 82.46 | 0.11 | 9.07 |
| Total Phosphate | mg PO4/L | 0.02 | 98.23 | 0.10 | 9.82 |
| Nitrates | mg NO3/L | Data Unavailable | |||
| Turbidity | NTU | 4.75 | 85.57 | 0.08 | 6.85 |
| Total Solids | mg/l | 114.00 | 80.97 | 0.07 | 5.67 |
| Totals (factors, total) | 0.53 | 47.85 | |||
| Adjusted WQI | 90.28 | ||||
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.