HydroBASINS lev08 watershed · #7080041650
Bassin de Rappahannock River
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 6 administrative regions : Caroline, Essex, King George, Spotsylvania, Stafford +1
Sub-basin area
657,5km²
Upstream area
5 033,3km²
Discharge
74,75m³/s
Mean elev.
37m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rappahannock River237 km²
- Bassin de Massaponax Creek106 km²
6 dept-equivalent regions (GADM L2)
- Caroline291.3 km²44.3% of basin
- 170.5 km²25.9% of basin
- Essex81.6 km²12.4% of basin
- Westmoreland36.4 km²5.5% of basin
- Stafford32.6 km²5.0% of basin
- 6.2 km²0.9% of basin
10 intersecting protected areas
The Nature Conservancy
IUCN VEasement
7.50 km² overlap
Esx-Vof-2677
IUCN Not AssignedConservation Easement
7.50 km² overlap
Pettigrew
IUCN VWildlife Management Area
3.71 km² overlap
Marine Protected Area
3.31 km² overlap
Rappahannock River Valley
IUCN IVNational Wildlife Refuge
3.13 km² overlap
Voorhees
IUCN VPrivate Conservation Land
2.99 km² overlap
Sanctuary
2.34 km² overlap
Reserve Program
0.35 km² overlap
Reserve Program
0.30 km² overlap
1 more protected areassorted by overlap area
National Wildlife Refuge
0.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 443 distinct species · 137 934 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Rappahannock River : 29 espèces reliées par 70 interactions GloBI sur 3 types (connectance 10.5%, filtre Serrano α=0.2). 8 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
13,7°C
Annual rain
1 054mm
Moisture idx (CMI)
-0,10
Runoff
413mm/an
PET
1 170mm
AET
856mm
Mean slope
1,6°
Water table
75cm
Forest
88%
Crops
18%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)