Table 2.25 Chlorophyll a (mg/L) at the Lower Cape Fear River Program stations for the 2002-2203 monitoring period. The NC standard is 40 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 | 7.2 | 9.0 | 15.3 | 9.4 | 20.1 | 20.7 | 17.2 | 2.8 | 2.0 | 2.0 | JUL | 12.6 | 19.3 | 25.7 | 3.4 | 2.7 | 12.1 | 14.2 | 3.8 | 3.9 | ||
| AUG | 6.0 | 6.6 | 20.1 | 7.0 | 13.5 | 33.4 | 27.9 | 4.4 | 1.7 | 4.8 | AUG | 12.7 | 7.0 | 9.6 | 3.0 | 2.7 | 5.0 | 10.4 | 1.2 | 5.2 | ||
| SEP | 2.3 | 2.5 | 5.8 | 4.3 | 3.6 | 4.8 | 13.5 | 3.2 | 4.0 | 3.1 | SEP | 1.5 | 0.6 | 1.6 | 2.3 | 1.6 | 2.7 | 5.9 | 0.6 | 3.0 | ||
| OCT | 2.2 | 3.5 | 4.8 | 3.6 | 3.8 | 4.9 | 3.7 | 2.0 | 2.4 | 2.6 | OCT | 4.3 | 1.7 | 2.1 | 2.9 | 0.5 | 0.8 | 3.1 | 0.6 | 0.8 | ||
| NOV | 0.8 | 0.6 | 1.2 | 2.1 | 2.5 | 2.6 | 2.7 | 2.4 | 2.3 | 2.4 | NOV | 0.7 | 0.7 | 0.7 | 0.7 | 0.5 | 0.3 | 1.2 | 0.2 | 0.3 | ||
| DEC | 1.2 | 1.2 | 1.0 | 1.2 | 1.2 | 1.2 | 1.9 | 2.8 | 2.9 | 2.5 | DEC | 1.3 | 0.9 | 1.0 | 0.9 | 0.7 | 0.8 | 1.0 | 0.1 | 0.2 | ||
| JAN | 1.9 | 1.7 | 2.5 | 2.5 | 2.1 | 1.7 | 1.8 | 1.7 | 3.9 | 2.2 | JAN | 1.6 | 2.0 | 1.9 | 1.9 | 0.8 | 1.4 | 0.6 | 0.4 | 0.3 | ||
| FEB | 3.1 | 2.9 | 4.9 | 3.2 | 3.2 | 5.1 | 5.9 | 5.6 | 4.8 | 7.6 | FEB | 5.1 | 5.4 | 5.4 | 4.4 | 3.6 | 4.5 | 1.3 | 0.5 | 1.2 | ||
| MAR | 2.1 | 1.8 | 2.4 | 2.2 | 2.6 | 4.0 | 3.6 | 6.7 | 6.9 | 6.6 | MAR | 2.7 | 2.6 | 2.7 | 2.5 | 1.5 | 2.0 | 0.8 | 1.2 | 0.6 | ||
| APR | 1.9 | 2.1 | 1.8 | 1.6 | 2.1 | 1.7 | 1.4 | 2.3 | 3.9 | 2.8 | APR | 3.7 | 4.8 | 3.6 | 3.7 | 1.5 | 2.4 | 0.7 | 0.5 | 0.8 | ||
| MAY | 1.8 | 1.7 | 2.3 | 1.5 | 1.8 | 2.6 | 2.0 | 2.7 | 2.9 | 3.5 | MAY | 2.2 | 1.5 | 2.0 | 1.9 | 1.2 | 1.7 | 1.1 | 0.3 | 0.5 | ||
| JUN | 2.2 | 2.2 | 2.3 | 1.8 | 2.1 | 2.2 | 2.1 | 4.4 | 10.4 | 3.1 | JUN | 3.6 | 3.7 | 3.9 | 3.3 | 1.4 | 2.0 | 0.4 | 0.5 | 0.3 | ||
| mean | 2.7 | 3.0 | 5.4 | 3.4 | 4.9 | 7.1 | 7.0 | 3.4 | 4.0 | 3.6 | mean | 4.3 | 4.2 | 5.0 | 2.6 | 1.6 | 3.0 | 3.4 | 0.8 | 1.4 | ||
| std dev | 1.8 | 2.3 | 5.8 | 2.4 | 5.5 | 9.4 | 8.0 | 1.5 | 2.4 | 1.7 | std dev | 3.9 | 5.0 | 6.7 | 1.1 | 0.9 | 3.1 | 4.3 | 1.0 | 1.6 | ||
| max | 7.2 | 9.0 | 20.1 | 9.4 | 20.1 | 33.4 | 27.9 | 6.7 | 10.4 | 7.6 | max | 12.7 | 19.3 | 25.7 | 4.4 | 3.6 | 12.1 | 14.2 | 3.8 | 5.2 | ||
| min | 0.8 | 0.6 | 1.0 | 1.2 | 1.2 | 1.2 | 1.4 | 1.7 | 1.7 | 2.0 | min | 0.7 | 0.6 | 0.7 | 0.7 | 0.5 | 0.3 | 0.4 | 0.1 | 0.2 | ||
| 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 | 13.2 | 0.8 | 53.3 | 5.8 | 40.8 | 2.9 | 2.4 | 3.4 | 58.4 | JUL | 0.4 | 0.5 | 1.4 | 119.2 | 2.8 | 17.7 | 14.1 | 15.8 | ||||
| AUG | 21.8 | 0.3 | 1.3 | 6.6 | 31.7 | 1.8 | 2.3 | 1.0 | 9.4 | AUG | 0.5 | 0.6 | 2.2 | 31.7 | 1.3 | 8.7 | 14.8 | 8.8 | ||||
| SEP | 18.7 | 1.3 | 1.6 | 1.8 | 6.2 | 29.5 | 8.0 | 1.3 | 1.9 | SEP | 1.4 | 0.5 | 1.7 | 35.1 | 0.4 | 3.3 | 2.2 | 4.9 | ||||
| OCT | 9.9 | 0.3 | 31.5 | 2.4 | 177.8 | 0.8 | 7.3 | 0.8 | 16.2 | OCT | 0.4 | 0.3 | 4.9 | 5.2 | 0.6 | 12.2 | 1.2 | 9.4 | ||||
| NOV | 5.2 | 0.2 | 1.9 | 1.2 | 3.3 | 0.4 | 1.9 | 0.4 | 0.6 | NOV | 0.5 | 0.5 | 1.4 | 0.9 | 0.7 | 0.7 | 1.3 | 1.2 | ||||
| DEC | 2.0 | 0.1 | 0.4 | 0.9 | 0.9 | 0.9 | 0.4 | 0.4 | 0.2 | DEC | 0.4 | 0.2 | 0.5 | 0.3 | 0.4 | 0.2 | 0.1 | 0.9 | ||||
| JAN | 6.0 | 1.5 | 3.7 | 1.8 | 1.5 | 1.9 | 1.6 | 0.7 | 0.5 | JAN | 0.7 | 0.5 | 0.3 | 1.5 | 2.4 | 0.8 | 0.2 | 1.5 | ||||
| FEB | 4.4 | 7.6 | 23.5 | 2.3 | 2.2 | 25.0 | 8.2 | 1.1 | 0.5 | FEB | 10.5 | 1.0 | 2.6 | 12.1 | 11.7 | 9.2 | 1.1 | 5.9 | ||||
| MAR | 4.9 | 1.7 | 2.5 | 3.0 | 1.3 | 3.0 | 1.5 | 4.5 | 2.0 | MAR | 1.0 | 1.2 | 1.3 | 2.0 | 4.5 | 3.5 | 1.7 | 2.7 | ||||
| APR | 0.7 | 0.7 | 1.1 | 0.6 | 1.1 | 0.8 | 0.6 | 0.7 | 0.9 | APR | 0.6 | 0.6 | 0.7 | 0.6 | 0.8 | 0.5 | 0.6 | 1.6 | ||||
| MAY | 1.8 | 1.0 | 3.0 | 2.5 | 1.2 | 0.7 | 0.5 | 1.2 | 0.6 | MAY | 0.2 | 0.4 | 0.8 | 0.6 | 0.8 | 0.4 | 1.7 | 1.5 | ||||
| JUN | 1.9 | 1.0 | 1.5 | 1.4 | 1.1 | 1.7 | 1.1 | 1.2 | 1.0 | JUN | 0.8 | 5.2 | 0.9 | 1.0 | 1.2 | 0.6 | 0.7 | 2.1 | ||||
| mean | 7.5 | 1.4 | 10.4 | 2.5 | 22.4 | 5.8 | 3.0 | 1.4 | 7.7 | mean | 1.5 | 1.0 | 1.6 | 17.5 | 2.3 | 4.8 | 3.3 | |||||
| std dev | 6.7 | 1.9 | 16.1 | 1.8 | 48.6 | 9.7 | 2.9 | 1.2 | 16.0 | std dev | 2.7 | 1.3 | 1.2 | 32.8 | 3.1 | 5.5 | 5.0 | |||||
| max | 21.8 | 7.6 | 53.3 | 6.6 | 177.8 | 29.5 | 8.2 | 4.5 | 58.4 | max | 10.5 | 5.2 | 4.9 | 119.2 | 11.7 | 17.7 | 14.8 | |||||
| min | 0.7 | 0.1 | 0.4 | 0.6 | 0.9 | 0.4 | 0.4 | 0.4 | 0.2 | min | 0.2 | 0.2 | 0.3 | 0.3 | 0.4 | 0.2 | 0.1 |