HydroBASINS lev08 watershed · #7080580480
Bassin de Rapidan 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 3 administrative regions : Culpeper, Orange, Spotsylvania
Sub-basin area
665,5km²
Upstream area
1 796,5km²
Discharge
29,9m³/s
Mean elev.
113m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rapidan River631 km²
- Bassin de Robinson River500 km²
3 dept-equivalent regions (GADM L2)
- Orange335.5 km²50.4% of basin
- 268.4 km²40.3% of basin
- 62.1 km²9.3% of basin
3 intersecting protected areas
Upper Rappahannock
IUCN VEasement
5.55 km² overlap
Ora-Vof-4088
IUCN Not AssignedConservation Easement
0.69 km² overlap
Reserve Program
0.31 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 926 distinct species · 56 534 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Rapidan River : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 77 interactions GloBI sur 4 types (connectance 13.7%, filtre Serrano α=0.2). 12 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°
13,0°C
Annual rain
1 078mm
Moisture idx (CMI)
-0,09
Runoff
454mm/an
PET
1 184mm
AET
873mm
Mean slope
1,9°
Water table
124cm
Forest
93%
Crops
20%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)