Table 2.5 Dissolved Oxygen (mg/L) at the Lower Cape Fear River
Program stations for the 2002-2003 monitoring period. NC standard is 5.0
mg/L for surface waters except swampwater which is 4.0 mg/L.
| DWQ# | 72 | 73 | 75 | 86 | 87 | 88 | 89 | 90 | 91 | 93 | DWQ# | 59 | 74 | 61 | 92 | 71 | 85 | 70 | 84 | ||
| month | NAV | HB | BRR | M61 | M54 | M42 | M35 | M23 | M18 | SPD | month | NC11 | LVC | AC | DP | BBT | IC | NCF6 | B210 | NCF117 | |
| JUL | 4.4 | 5.6 | 5.7 | 6.2 | 8.0 | 8.2 | 7.2 | 6.5 | 6.5 | 5.8 | JUL | 7.7 | 7.4 | 7.2 | 4.4 | 4.3 | 4.6 | 6.6 | 5.5 | 5.1 | |
| AUG | 3.7 | 3.9 | 5.2 | 4.2 | 5.4 | 7.3 | 7.2 | 6.2 | 6.0 | 4.9 | AUG | 6.3 | 4.5 | 4.4 | 4.1 | 4.3 | 4.1 | 4.6 | 2.9 | 5.7 | |
| SEP | 4.7 | 4.1 | 3.9 | 3.7 | 3.7 | 4.2 | 5.3 | 5.6 | 5.8 | 4.4 | SEP | 7.0 | 4.2 | 6.3 | 5.7 | 4.4 | 5.0 | 4.8 | 4.7 | 4.3 | |
| OCT | 3.4 | 3.6 | 3.8 | 4.2 | 4.8 | 5.4 | 5.8 | 6.0 | 6.1 | 4.5 | OCT | 5.6 | 5.6 | 6.3 | 3.3 | 3.3 | 3.3 | 4.5 | 4.3 | 3.5 | |
| NOV | 8.2 | 8.2 | 8.7 | 8.1 | 7.4 | 7.4 | 7.5 | 7.7 | 7.5 | 6.9 | NOV | 10.1 | 9.8 | 9.9 | 9.5 | 9.0 | 8.5 | 7.5 | 8.1 | 6.2 | |
| DEC | 10.7 | 10.7 | 11.1 | 10.6 | 11.4 | 11.4 | 10.2 | 10.8 | 10.4 | 10.4 | DEC | 11.2 | 10.6 | 10.4 | 9.9 | 10.0 | 9.7 | 8.6 | 10.6 | 8.6 | |
| JAN | 12.1 | 11.8 | 12.3 | 12.1 | 12.2 | 12.4 | 11.4 | 11.8 | 10.2 | 11.3 | JAN | 11.8 | 8.3 | 11.5 | 11.6 | 10.7 | 11.0 | 10.0 | 11.1 | 9.8 | |
| FEB | 11.7 | 11.7 | 12.6 | 11.3 | 11.7 | 11.6 | 11.2 | 10.5 | 10.3 | 11.0 | FEB | 13.0 | 12.7 | 12.9 | 12.9 | 12.5 | 12.8 | 11.6 | 11.2 | 11.7 | |
| MAR | 10.8 | 10.8 | 10.8 | 10.6 | 10.6 | 10.9 | 10.6 | 10.9 | 10.5 | 10.5 | MAR | 11.7 | 11.4 | 11.5 | 11.5 | 10.0 | 10.8 | 8.9 | 9.5 | 8.7 | |
| APR | 8.6 | 9.1 | 8.6 | 8.2 | 8.1 | 8.3 | 8.7 | 9.6 | 9.3 | 8.7 | APR | 8.9 | 7.0 | 8.6 | 8.4 | 6.4 | 7.3 | 5.7 | 6.9 | 5.4 | |
| MAY | 6.0 | 6.0 | 6.3 | 6.0 | 6.2 | 6.6 | 6.7 | 7.5 | 7.5 | 6.6 | MAY | 7.7 | 6.9 | 7.1 | 6.1 | 5.6 | 5.8 | 5.5 | 5.4 | 4.7 | |
| JUN | 5.8 | 5.9 | 6.2 | 5.5 | 5.9 | 5.8 | 6.1 | 7.1 | 7.4 | 6.6 | JUN | 7.1 | 6.8 | 6.9 | 6.6 | 5.3 | 5.8 | 4.4 | 6.0 | 4.5 | |
| mean | 7.5 | 7.6 | 7.9 | 7.6 | 8.0 | 8.3 | 8.2 | 8.4 | 8.1 | 7.6 | mean | 9.0 | 7.9 | 8.6 | 7.8 | 7.2 | 7.4 | 6.9 | 7.2 | 6.5 | |
| std dev | 3.1 | 3.0 | 3.0 | 2.9 | 2.8 | 2.6 | 2.1 | 2.1 | 1.8 | 2.5 | std dev | 2.4 | 2.6 | 2.5 | 3.1 | 3.0 | 3.0 | 2.3 | 2.7 | 2.5 | |
| max | 12.1 | 11.8 | 12.6 | 12.1 | 12.2 | 12.4 | 11.4 | 11.8 | 10.5 | 11.3 | max | 13.0 | 12.7 | 12.9 | 12.9 | 12.5 | 12.8 | 11.6 | 11.2 | 11.7 | |
| min | 3.4 | 3.6 | 3.8 | 3.7 | 3.7 | 4.2 | 5.3 | 5.6 | 5.8 | 4.4 | min | 5.6 | 4.2 | 4.4 | 3.3 | 3.3 | 3.3 | 4.4 | 2.9 | 3.5 | |
| DWQ# | 69 | 79 | 78 | 94 | 77 | 80 | 81 | 83 | 82 | DWQ# | 65 | 64 | 63 | 62 | 66 | 67 | 68 | All stations | |||
| month | ANC | SAR | GS | NC403 | PB | LRC | ROC | BC117 | BCRR | month | 6RC | LCO | GCO | SR | BRN | HAM | COL | mean | |||
| JUL | 0.4 | 4.5 | 2.2 | 1.0 | 1.8 | 16.8 | 6.9 | 14.4 | 2.2 | JUL | 4.8 | 4.3 | 2.6 | 1.2 | 6.1 | 1.4 | 5.0 | 5.5 | |||
| AUG | 0.6 | 4.2 | 1.1 | 0.8 | 2.8 | 9.5 | 5.9 | 4.1 | 0.7 | AUG | 6.2 | 6.1 | 4.5 | 5.7 | 9.0 | 6.6 | 4.3 | 4.8 | |||
| SEP | 0.3 | 4.0 | 2.5 | 0.1 | 3.2 | 6.9 | 5.4 | 5.4 | 5.0 | SEP | 5.4 | 6.1 | 0.8 | 2.9 | 8.4 | 3.3 | 5.5 | 4.5 | |||
| OCT | 0.7 | 6.5 | 0.7 | 0.9 | 16.0 | 9.5 | 3.7 | 6.8 | 1.1 | OCT | 6.6 | 6.7 | 4.9 | 0.4 | 8.4 | 3.3 | 6.2 | 4.8 | |||
| NOV | 0.6 | 9.3 | 4.6 | 3.6 | 6.6 | 10.9 | 9.3 | 7.0 | 2.4 | NOV | 9.4 | 9.6 | 8.4 | 7.7 | 9.6 | 7.7 | 7.9 | 7.7 | |||
| DEC | 4.0 | 11.8 | 10.7 | 8.6 | 7.6 | 12.2 | 11.2 | 9.8 | 8.5 | DEC | 11.9 | 12.1 | 10.4 | 8.2 | 11.9 | 9.1 | 10.4 | 10.2 | |||
| JAN | 9.2 | 11.3 | 11.4 | 7.3 | 9.6 | 12.4 | 11.7 | 10.3 | 11.1 | JAN | 12.2 | 11.7 | 10.7 | 11.1 | 12.2 | 10.8 | 11.2 | 11.1 | |||
| FEB | 8.9 | 11.3 | 11.5 | 5.6 | 8.6 | 12.3 | 11.9 | 9.2 | 9.5 | FEB | 11.6 | 11.6 | 9.1 | 9.6 | 11.8 | 11.1 | 10.3 | 11.1 | |||
| MAR | 10.7 | 10 | 8.6 | 7.3 | 9.8 | 11.2 | 9.7 | 9.4 | 9.6 | MAR | 9.3 | 8.4 | 6.9 | 8.1 | 8.2 | 9.1 | 8.1 | 9.9 | |||
| APR | 7.6 | 6.9 | 9.7 | 4.3 | 8.4 | 9.4 | 8.2 | 8.4 | 8.2 | APR | 8.5 | 8.4 | 5.7 | 7.3 | 8.6 | 8.1 | 6.5 | 7.9 | |||
| MAY | 5.3 | 4.1 | 5.0 | 0.4 | 7.0 | 8.5 | 6.1 | 4.4 | 2.2 | MAY | 7.0 | 7.2 | 4.7 | 3.1 | 8.1 | 4.9 | 7.0 | 5.9 | |||
| JUN | 4.0 | 5.0 | 5.6 | 0.8 | 8.4 | 7.7 | 5.5 | 7.9 | 7.7 | JUN | 5.5 | 5.5 | 4.6 | 4.3 | 7.0 | 6.4 | 5.7 | 5.9 | |||
| mean | 4.4 | 7.4 | 6.1 | 3.4 | 7.5 | 10.6 | 8.0 | 8.1 | 5.7 | mean | 8.2 | 8.1 | 6.1 | 5.8 | 9.1 | 6.8 | 7.3 | ||||
| std dev | 3.8 | 3.0 | 3.9 | 3.0 | 3.6 | 2.5 | 2.7 | 2.7 | 3.6 | std dev | 2.6 | 2.5 | 2.9 | 3.3 | 1.9 | 3.0 | 2.2 | ||||
| max | 10.7 | 11.8 | 11.5 | 8.6 | 16.0 | 16.8 | 11.9 | 14.4 | 11.1 | max | 12.2 | 12.1 | 10.7 | 11.1 | 12.2 | 11.1 | 11.2 | ||||
| min | 0.3 | 4.0 | 0.7 | 0.1 | 1.8 | 6.9 | 3.7 | 4.1 | 0.7 | min | 4.8 | 4.3 | 0.8 | 0.4 | 6.1 | 1.4 | 4.3 |