HydroBASINS lev08 watershed · #7080041820
Bassin de Pamunkey 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 4 administrative regions : Caroline, Hanover, King William, New Kent
Sub-basin area
1 043,5km²
Upstream area
3 797,8km²
Discharge
50,54m³/s
Mean elev.
35m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Little River1543 km²
- Bassin de South Anna River67 km²
4 dept-equivalent regions (GADM L2)
- 464.0 km²44.4% of basin
- 351.8 km²33.7% of basin
- 203.0 km²19.4% of basin
- Caroline25.2 km²2.4% of basin
10 intersecting protected areas
Chesapeake Bay Estuarine Complex
IUCN Not ReportedWetland of International Importance (Ramsar Site)
141.76 km² overlap
Chesapeake Bay National Estuarine Research Reserve - Virginia National Estuarine Research Reserve
IUCN IVMarine Protected Area
6.08 km² overlap
Cumberland Marsh
IUCN VPrivate Conservation Land
4.43 km² overlap
Marine Protected Area
4.43 km² overlap
Cumberland Marsh
IUCN VState Natural Area Preserve
4.39 km² overlap
Pamunkey Reservati
IUCN Not AssignedReservation
2.09 km² overlap
Sweet Hall Marsh -
IUCN VNational Estuarine Research Reserve
1.02 km² overlap
Reserve Program
0.55 km² overlap
Kwm-Vof-4019
IUCN Not AssignedConservation Easement
0.45 km² overlap
1 more protected areassorted by overlap area
The Nature Conservancy
IUCN VEasement
0.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 854 distinct species · 123 352 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Pamunkey River : 25 espèces reliées par 80 interactions GloBI sur 3 types (connectance 12.7%, filtre Serrano α=0.2). 11 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°
14,1°C
Annual rain
1 098mm
Moisture idx (CMI)
-0,09
Runoff
405mm/an
PET
1 211mm
AET
891mm
Mean slope
1,2°
Water table
56cm
Forest
93%
Crops
25%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)