HydroBASINS lev08 watershed · #7080625520
Bassin de Smith 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 : Floyd, Franklin, Henry, Martinsville, Patrick +2
Sub-basin area
1 445,7km²
Upstream area
1 445,8km²
Discharge
22,19m³/s
Mean elev.
369m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
7 dept-equivalent regions (GADM L2)
- Henry723.5 km²50.0% of basin
- 369.5 km²25.6% of basin
- Franklin277.7 km²19.2% of basin
- 28.9 km²2.0% of basin
- Rockingham27.7 km²1.9% of basin
- Floyd18.8 km²1.3% of basin
- 0.0 km²0.0% of basin
7 intersecting protected areas
Fairy Stone
IUCN VState Park
21.64 km² overlap
Fairystone Farms
IUCN VState Wildlife Management Area
20.48 km² overlap
Pat-Vof-4008
IUCN Not AssignedConservation Easement
0.97 km² overlap
VOF
IUCN Not AssignedEasement
0.56 km² overlap
Turkeycock
IUCN VWildlife Management Area
0.35 km² overlap
Gravely Run
IUCN IIINature Preserve
0.30 km² overlap
Bassett River Access
IUCN Not AssignedEasement
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 178 distinct species · 130 110 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Smith River : 25 espèces reliées par 69 interactions GloBI sur 4 types (connectance 9.8%, 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°
12,9°C
Annual rain
1 173mm
Moisture idx (CMI)
-0,03
Runoff
452mm/an
PET
1 205mm
AET
928mm
Mean slope
5,6°
Water table
259cm
Forest
92%
Crops
9%
Urban
3%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)