Table 2.4 pH at the Lower Cape Fear River Program stations for the 2002-2003 monitoring period.
| 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 | 7.3 | 7.5 | 7.5 | 7.8 | 8.0 | 8.2 | 8.1 | 8.1 | 8.2 | 8.2 | JUL | 6.9 | 7.1 | 7.3 | 7.1 | 7.1 | 7.1 | 7.4 | 6.7 | 6.6 | |
| AUG | 7.4 | 7.3 | 7.4 | 7.5 | 7.7 | 7.9 | 8.0 | 8.0 | 8.0 | 7.7 | AUG | 6.6 | 6.9 | 7.1 | 6.9 | 6.9 | 6.9 | 7.0 | 6.7 | 6.8 | |
| SEP | 7.2 | 7.1 | 7.2 | 7.1 | 7.4 | 7.5 | 7.7 | 7.9 | 8.0 | 7.6 | SEP | 5.9 | 6.0 | 6.4 | 6.5 | 6.5 | 6.5 | 6.6 | 5.9 | 6.2 | |
| OCT | 7.1 | 7.1 | 7.2 | 7.2 | 7.5 | 7.6 | 7.7 | 7.9 | 7.9 | 7.5 | OCT | 6.4 | 6.5 | 6.9 | 6.8 | 6.5 | 6.7 | 6.6 | 6.3 | 6.3 | |
| NOV | 7.6 | 7.3 | 7.5 | 7.4 | 7.5 | 7.8 | 7.9 | 8.1 | 8.0 | 7.7 | NOV | 5.9 | 6.6 | 6.6 | 6.6 | 6.5 | 6.4 | 6.7 | 6.5 | 6.4 | |
| DEC | 7.8 | 7.9 | 8.0 | 7.9 | 8.0 | 8.0 | 8.0 | 7.9 | 7.9 | 7.6 | DEC | 6.1 | 6.5 | 6.9 | 6.5 | 6.4 | 6.5 | 6.6 | 6.1 | 6.1 | |
| JAN | 7.5 | 7.4 | 7.1 | 7.5 | 7.4 | 7.6 | 7.9 | 8.2 | 7.7 | 7.4 | JAN | 6.4 | 6.3 | 6.4 | 6.5 | 6.4 | 6.5 | 6.4 | 6.0 | 6.1 | |
| FEB | 7.2 | 7.2 | 6.8 | 7.1 | 8.1 | 8.2 | 8.1 | 8.0 | 7.9 | 7.6 | FEB | 5.7 | 6.5 | 6.6 | 6.8 | 6.8 | 6.8 | 6.7 | 6.1 | 6.1 | |
| MAR | 6.4 | 6.3 | 6.8 | 6.8 | 7.3 | 6.5 | 8.3 | 8.1 | 8.1 | 7.4 | MAR | 7.1 | 6.7 | 6.6 | 6.5 | 6.3 | 6.4 | 6.3 | 6.1 | 6.4 | |
| APR | 6.6 | 6.9 | 7.6 | 7.6 | 8.0 | 8.1 | 8.0 | 8.1 | 7.9 | 7.8 | APR | 5.5 | 6.0 | 6.1 | 6.2 | 6.2 | 6.3 | 6.2 | 5.5 | 5.6 | |
| MAY | 6.1 | 6.2 | 6.3 | 6.7 | 7.1 | 7.1 | 7.3 | 7.6 | 7.8 | 7.6 | MAY | 6.2 | 7.0 | 6.2 | 6.1 | 5.8 | 5.8 | 6.0 | 6.9 | 7.0 | |
| JUN | 6.5 | 6.5 | 6.6 | 6.4 | 6.5 | 6.6 | 6.8 | 7.5 | 7.9 | 7.4 | JUN | 6.5 | 6.8 | 6.6 | 6.6 | 6.2 | 6.4 | 5.9 | 5.4 | 6.1 | |
| median | 7.2 | 7.2 | 7.2 | 7.3 | 7.5 | 7.7 | 8.0 | 8.0 | 7.9 | 7.6 | median | 6.3 | 6.6 | 6.6 | 6.6 | 6.5 | 6.5 | 6.6 | 6.1 | 6.3 | |
| std dev | 0.5 | 0.5 | 0.5 | 0.4 | 0.4 | 0.6 | 0.4 | 0.2 | 0.1 | 0.2 | std dev | 0.5 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | |
| max | 7.8 | 7.9 | 8.0 | 7.9 | 8.1 | 8.2 | 8.3 | 8.2 | 8.2 | 8.2 | max | 7.1 | 7.1 | 7.3 | 7.1 | 7.1 | 7.1 | 7.4 | 6.9 | 7.0 | |
| min | 6.1 | 6.2 | 6.3 | 6.4 | 6.5 | 6.5 | 6.8 | 7.5 | 7.7 | 7.4 | min | 5.5 | 6.0 | 6.1 | 6.1 | 5.8 | 5.8 | 5.9 | 5.4 | 5.6 | |
| 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 | 6.1 | 6.7 | 6.7 | 6.3 | 6.4 | 9.6 | 8.0 | 8.5 | 7.5 | JUL | 7.3 | 6.9 | 6.9 | 6.6 | 7.1 | 6.8 | 5.2 | 7.3 | |||
| AUG | 6.2 | 6.3 | 6.0 | 6.4 | 7.2 | 7.8 | 7.5 | 7.6 | 6.4 | AUG | 6.4 | 6.5 | 6.8 | 6.8 | 7.0 | 6.9 | 6.6 | 7.1 | |||
| SEP | 5.8 | 5.7 | 5.7 | 6.1 | 6.2 | 6.4 | 6.8 | 6.8 | 6.9 | SEP | 6.4 | 5.7 | 6.1 | 5.4 | 6.7 | 6.8 | 3.7 | 6.5 | |||
| OCT | 5.8 | 6.5 | 6.4 | 6.3 | 6.9 | 7.4 | 7.1 | 7.5 | 7.4 | OCT | 6.4 | 6.5 | 6.6 | 6.0 | 6.7 | 6.6 | 3.5 | 6.8 | |||
| NOV | 6.0 | 6.4 | 6.5 | 6.8 | 6.4 | 7.1 | 7.0 | 7.1 | 6.1 | NOV | 6.1 | 5.9 | 6.2 | 5.9 | 6.1 | 6.3 | 3.5 | 6.7 | |||
| DEC | 5.5 | 5.9 | 6.0 | 6.1 | 6.0 | 6.6 | 6.6 | 6.8 | 6.8 | DEC | 5.9 | 5.8 | 5.8 | 5.5 | 6.1 | 6.2 | 3.5 | 6.6 | |||
| JAN | 10.3 | 6.3 | 6.5 | 6.3 | 6.9 | 6.4 | 6.3 | 7.3 | 5.8 | JAN | 5.9 | 5.6 | 5.9 | 5.9 | 6.2 | 6.3 | 3.6 | 6.7 | |||
| FEB | 6.6 | 6.3 | 6.3 | 6.7 | 6.3 | 6.7 | 6.8 | 6.5 | 6.3 | FEB | 7.3 | 6.3 | 6.7 | 6.5 | 6.7 | 6.8 | 4.1 | 6.8 | |||
| MAR | 5.9 | 6.5 | 6.4 | 6.4 | 6.3 | 6.5 | 6.5 | 6.3 | 6.7 | MAR | 6.2 | 5.9 | 5.9 | 5.6 | 5.9 | 5.7 | 3.7 | 6.5 | |||
| APR | 4.6 | 6.5 | 6.7 | 6.3 | 6.6 | 6.7 | 6.6 | 6.4 | 6.5 | APR | 6.1 | 5.9 | 5.9 | 5.6 | 6.0 | 6.2 | 3.3 | 6.5 | |||
| MAY | 5.9 | 6.5 | 6.7 | 6.4 | 6.7 | 7.2 | 7.2 | 7.5 | 7.2 | MAY | 7.4 | 7.3 | 6.9 | 6.9 | 6.8 | 6.6 | 4.5 | 6.7 | |||
| JUN | 4.5 | 6.3 | 6.4 | 6.0 | 6.5 | 6.6 | 6.2 | 6.5 | 5.6 | JUN | 6.4 | 5.7 | 6.2 | 6.0 | 6.5 | 6.5 | 4.1 | 6.3 | |||
| median | 5.9 | 6.4 | 6.4 | 6.3 | 6.5 | 6.7 | 6.8 | 7.0 | 6.6 | median | 6.4 | 5.9 | 6.2 | 6.0 | 6.6 | 6.6 | 3.7 | ||||
| std dev | 1.4 | 0.3 | 0.3 | 0.2 | 0.3 | 0.9 | 0.5 | 0.6 | 0.6 | std dev | 0.5 | 0.5 | 0.4 | 0.5 | 0.4 | 0.3 | 0.9 | ||||
| max | 10.3 | 6.7 | 6.7 | 6.8 | 7.2 | 9.6 | 8.0 | 8.5 | 7.5 | max | 7.4 | 7.3 | 6.9 | 6.9 | 7.1 | 6.9 | 6.6 | ||||
| min | 4.5 | 5.7 | 5.7 | 6.0 | 6.0 | 6.4 | 6.2 | 6.3 | 5.6 | min | 5.9 | 5.6 | 5.8 | 5.4 | 5.9 | 5.7 | 3.3 |