HydroBASINS lev08 watershed · #7080620930
Bassin de Middle 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 4 administrative regions : Bland, Smyth, Washington, Wythe
Sub-basin area
617,3km²
Upstream area
617,6km²
Discharge
11,47m³/s
Mean elev.
731m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 409.3 km²66.3% of basin
- Washington193.6 km²31.3% of basin
- 14.6 km²2.4% of basin
- 0.0 km²0.0% of basin
5 intersecting protected areas
Hungry Mother
IUCN IIIState Park
11.71 km² overlap
Smy-Vof-4062
IUCN Not AssignedConservation Easement
0.81 km² overlap
Smy-Vof-4064
IUCN Not AssignedConservation Easement
0.48 km² overlap
Reserve Program
0.11 km² overlap
Smy-Vof-4031
IUCN Not AssignedConservation Easement
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 771 distinct species · 83 301 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 Middle Fork Holston River : 30 espèces reliées par 87 interactions GloBI sur 4 types (connectance 11.2%, filtre Serrano α=0.2). 10 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°
11,1°C
Annual rain
1 133mm
Moisture idx (CMI)
-0,01
Runoff
561mm/an
PET
1 145mm
AET
896mm
Mean slope
7,2°
Water table
328cm
Forest
74%
Crops
29%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)