HydroBASINS lev08 watershed · #7080630540
Bassin de South Fork Obion 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 5 administrative regions : Carroll, Gibson, Henry, Obion, Weakley
Sub-basin area
1 961,2km²
Upstream area
1 961,3km²
Discharge
35,27m³/s
Mean elev.
131m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- Carroll749.1 km²38.2% of basin
- 662.3 km²33.8% of basin
- Henry333.5 km²17.0% of basin
- Gibson196.6 km²10.0% of basin
- 20.2 km²1.0% of basin
12 intersecting protected areas
Obion River
IUCN VWildlife Management Area
30.26 km² overlap
Harts Mill
IUCN VWildlife Management Area
7.08 km² overlap
Maness Swamp
IUCN VRefuge
4.93 km² overlap
Reserve Program
3.88 km² overlap
Bean Switch
IUCN VRefuge
2.96 km² overlap
Hop-In
IUCN VRefuge
2.43 km² overlap
Jarrell Switch
IUCN VRefuge
1.11 km² overlap
Reserve Program
0.95 km² overlap
Watershed Protection
0.89 km² overlap
3 more protected areassorted by overlap area
Watershed Protection
0.70 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Weakley, TN
IUCN Not AssignedConservation Easement
0.16 km² overlap
Conservation Easement
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 241 distinct species · 23 666 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 South Fork Obion River : 27 espèces reliées par 70 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 9 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°
14,4°C
Annual rain
1 354mm
Moisture idx (CMI)
0,07
Runoff
567mm/an
PET
1 262mm
AET
983mm
Mean slope
1,4°
Water table
70cm
Forest
28%
Crops
51%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)