HydroBASINS lev08 watershed · #7080042100
Bassin de Northwest 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 7 administrative regions : Camden, Chesapeake, Currituck, Gates, Pasquotank +2
Sub-basin area
1 031,5km²
Upstream area
1 031,5km²
Discharge
16,66m³/s
Mean elev.
12m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- 452.9 km²43.9% of basin
- 217.7 km²21.1% of basin
- Suffolk210.2 km²20.4% of basin
- Camden112.7 km²10.9% of basin
- 17.3 km²1.7% of basin
- 13.9 km²1.3% of basin
- 0.6 km²0.1% of basin
11 intersecting protected areas
Great Dismal Swamp
IUCN IVNational Wildlife Refuge
273.85 km² overlap
Northwest River
IUCN VPrivate Conservation Land
13.27 km² overlap
Marine Protected Area
11.10 km² overlap
Marine Protected Area
6.37 km² overlap
Northwest River
IUCN VState Natural Area Preserve
6.09 km² overlap
Northwest River
IUCN VState Natural Area Preserve
5.34 km² overlap
The Nature Conservancy
IUCN VEasement
4.04 km² overlap
Northwest River - Powers
IUCN Not AssignedConservation Easement
3.65 km² overlap
Northwest River
IUCN IIIPark
3.07 km² overlap
2 more protected areassorted by overlap area
Private Conservation Land
0.04 km² overlap
Reserve Program
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 570 distinct species · 181 568 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 Northwest River : 24 espèces reliées par 77 interactions GloBI sur 4 types (connectance 12.2%, 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°
15,3°C
Annual rain
1 200mm
Moisture idx (CMI)
0,05
Runoff
503mm/an
PET
1 146mm
AET
931mm
Mean slope
0,5°
Water table
17cm
Forest
66%
Crops
30%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)