HydroBASINS lev08 watershed · #7080624210
Bassin de North Fork New 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 6 administrative regions : Ashe, Grayson, Johnson, Smyth, Washington +1
Sub-basin area
757,8km²
Upstream area
757,9km²
Discharge
14,75m³/s
Mean elev.
1 038m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 618.3 km²81.6% of basin
- Grayson111.4 km²14.7% of basin
- 27.0 km²3.6% of basin
- Johnson1.0 km²0.1% of basin
- Washington0.3 km²0.0% of basin
- 0.1 km²0.0% of basin
11 intersecting protected areas
Conservation Area
9.06 km² overlap
Grayson Highlands
IUCN IIIState Park
7.97 km² overlap
Lewis Fork
IUCN IbWilderness
5.88 km² overlap
Conservation Fund
IUCN VPreserve
1.55 km² overlap
Paddy Mountain Plant
IUCN VConservation Preserve
0.97 km² overlap
Bluff Mountain Fee
IUCN VPrivate Conservation Land
0.46 km² overlap
Three Top Mountain
IUCN VPrivate Conservation Land
0.45 km² overlap
Bluff Mountain
IUCN VEasement
0.22 km² overlap
Snake Mountain
IUCN Not AssignedConservation Easement
0.18 km² overlap
2 more protected areassorted by overlap area
Bluff Mountain
IUCN VConservation Easement
0.17 km² overlap
Wildlife Management Area
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 270 distinct species · 118 201 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 North Fork New River : 30 espèces reliées par 78 interactions GloBI sur 4 types (connectance 8.6%, filtre Serrano α=0.2). 13 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°
9,8°C
Annual rain
1 334mm
Moisture idx (CMI)
0,22
Runoff
589mm/an
PET
1 042mm
AET
925mm
Mean slope
11,4°
Water table
458cm
Forest
100%
Crops
14%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)