TABLE 4.
Changes in Total Phosphorus Flux for the Nine RIM Sites for Two Periods: 1978-2008 and 2000-2008.
| 1978-2008 |
2000-2008 |
|||
|---|---|---|---|---|
| River | Slope (% per year) | Flux Change (kg/day) | Slope (% per year) | Flux Change (kg/day) |
| Susquehanna | −0.4 | −990 | +1.9 | +970 |
| Potomac | −0.3 | −530 | −2.0 | −940 |
| James | +0.5 | +480 | +2.5 | +590 |
| Rappahannock | +4.0 | +780 | +8.4 | +580 |
| Appomattox | −0.2 | −10 | +0.8 | +12 |
| Patuxent | −2.5 | −400 | +0.2 | +2 |
| Pamunkey | +1.2 | +64 | +1.1 | +19 |
| Mattaponi | +0.7 | +12 | +0.1 | +0 |
| Choptank | +0.3 | +3 | +1.9 | +5 |
Flux change is the flow-normalized annual flux estimate at the end of the period minus the flow-normalized annual flux estimate at the beginning of the period. The slope is this flux change per year expressed in percentage terms over the period.