HydroBASINS lev08 watershed · #7080624020
Bassin de South Fork Holston 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 : Greene, Hawkins, Scott, Sullivan, Washington
Sub-basin area
552,4km²
Upstream area
5 313,8km²
Discharge
106,96m³/s
Mean elev.
477m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
6 dept-equivalent regions (GADM L2)
- Sullivan384.7 km²69.6% of basin
- Washington119.7 km²21.7% of basin
- Scott32.9 km²6.0% of basin
- 10.3 km²1.9% of basin
- Greene3.4 km²0.6% of basin
- Washington1.5 km²0.3% of basin
2 intersecting protected areas
State Natural Area
8.90 km² overlap
Reserve Program
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 106 distinct species · 210 206 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 South Fork Holston River : 30 espèces reliées par 82 interactions GloBI sur 4 types (connectance 10.0%, filtre Serrano α=0.2). 11 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°
13,0°C
Annual rain
1 116mm
Moisture idx (CMI)
-0,08
Runoff
605mm/an
PET
1 213mm
AET
900mm
Mean slope
5,6°
Water table
275cm
Forest
37%
Crops
25%
Urban
18%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)