HydroBASINS lev08 watershed · #7080041680
Bassin de Piscataway 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 : Essex, King and Queen
Sub-basin area
146,5km²
Upstream area
146,6km²
Discharge
1,84m³/s
Mean elev.
38m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Essex144.8 km²98.8% of basin
- 1.6 km²1.1% of basin
3 intersecting protected areas
Marine Protected Area
0.97 km² overlap
Rappahannock River Valley
IUCN IVNational Wildlife Refuge
0.97 km² overlap
Esx-Vof-4018
IUCN Not AssignedConservation Easement
0.76 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
725 distinct species · 21 778 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Piscataway Creek : 21 espèces reliées par 66 interactions GloBI sur 4 types (connectance 12.5%, 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°
14,0°C
Annual rain
1 088mm
Moisture idx (CMI)
-0,09
Runoff
399mm/an
PET
1 190mm
AET
881mm
Mean slope
1,5°
Water table
53cm
Forest
97%
Crops
15%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)