HydroBASINS lev08 watershed · #7080041470
Bassin de Powells Creek
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 2 administrative regions : Prince William, Stafford
Sub-basin area
361,3km²
Upstream area
361,3km²
Discharge
1,1m³/s
Mean elev.
67m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 267.2 km²73.9% of basin
- Stafford78.7 km²21.8% of basin
9 intersecting protected areas
Prince William
IUCN VForest Park
51.05 km² overlap
Widewater
IUCN IIIState Park
4.22 km² overlap
Chesapeake Bay Estuarine Complex
IUCN Not ReportedWetland of International Importance (Ramsar Site)
3.06 km² overlap
Occoquan Bay
IUCN IVNational Wildlife Refuge
2.57 km² overlap
Leesylvania
IUCN IIIState Park
2.12 km² overlap
Marine Protected Area
1.45 km² overlap
Featherstone
IUCN IVNational Wildlife Refuge
1.38 km² overlap
Unknown
IUCN VPark
0.88 km² overlap
Us-Va-139-1
IUCN Not AssignedConservation Easement
0.29 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 247 distinct species · 795 625 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Powells Creek : 26 espèces reliées par 71 interactions GloBI sur 3 types (connectance 11.3%, filtre Serrano α=0.2). 10 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°
13,1°C
Annual rain
1 007mm
Moisture idx (CMI)
-0,12
Runoff
424mm/an
PET
1 144mm
AET
827mm
Mean slope
2,2°
Water table
132cm
Forest
79%
Crops
6%
Urban
40%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)