There are 16 areas (called subwatersheds or catchments or drainage basins) that flow into the 2014 portions of the Rapidan and Robinson River watersheds. These are listed below (from west to east) and shown in the following image. Knowledge of the land cover in a river’s drainage basins helps understanding about river health.
- Beautiful Run
- Blue Run
- Conway River
- Crooked Run
- Deep Run
- Garth Run
- Great Run
- Hazel River
- Hughes River
- Leathers Run
- Marsh Run
- Poplar Run
- Rapidan River
- Rose River
- South River
- White Oak Run
The following charts show the proportion of types of land cover for each of these subwatersheds.
Note the majority of landcover in Blue Run is forest, hay, and pasture.
Note the very high percentage of the watershed in forest cover.
Again, note the high percentage of watershed in forest cover.
Again, this watershed has a high percentage of forest cover.
Note the significant proportion of forest cover and lesser though consequential grazed pasture with manure, hay, and conservation tillage.
Note the greatest types of land cover are forest, grazed pasture, and hay, respectively. Also note the significant proportion of conservation tillage.
Again, as found in Garth Run, note the high proportion of forest cover, and consequential grazed pasture with fertilizer, hay, and conservation tillage.
Note the significant proportions of forest cover and grazed pasture with applied manure in this subwatershed.
Note the significant proportion of forest cover, grazed pasture with fertilizer, hay, and conservation tillage.
Note the exceptionally high proportion of forest cover in the Poplar Run subwatershed.
Rapidan River Land Cover
Note that this area drains lands directly adjacent to river around the village of Rapidan (thus the name of this subwatershed within the larger Rapidan drainage basin). Other subwatersheds that also drain lands directly into the main stem of the river are Poplar Run and Marsh Run. Note the significant proportions of forest cover, unimproved pasture, grazed pasture with fertilizer, hay, and conservation tillage.
Note the exceptionally high proportion of forest cover in the Rose River subwatershed.
The South River subwatershed is predominately forested, with significant proportions of grazed pasture with fertilizer and hay.
White Oak Run
The land cover total acres and percentages for these 16 subwatersheds combined are shown below. (coming)