HydroBASINS lev08 watershed · #7080415450
Bassin de Tongue 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 3 administrative regions : Big Horn, Sheridan
Sub-basin area
1 272,3km²
Upstream area
1 272,5km²
Discharge
0,73m³/s
Mean elev.
1 987m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Sheridan1270.0 km²99.6% of basin
- 2.7 km²0.2% of basin
- Big Horn2.4 km²0.2% of basin
9 intersecting protected areas
Lower Wolf Creek
IUCN VEasement
18.64 km² overlap
Amsden Creek
IUCN VWildlife Habitat Management Area
15.80 km² overlap
Columbus/Smith Creek
IUCN VEasement
6.49 km² overlap
Big Horn Foothills (Pca)
IUCN VEasement
3.86 km² overlap
Private Conservation Land
0.16 km² overlap
Conner
IUCN IIIBattlefield
0.05 km² overlap
Lower Wolf Creek Fee
IUCN VPrivate Conservation Land
0.00 km² overlap
Columbus/Smith Creek Fee
IUCN VPrivate Conservation Land
0.00 km² overlap
Columbus/Smith Creek Fee
IUCN VPrivate Conservation Land
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 478 distinct species · 23 703 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 Tongue River : 26 espèces reliées par 76 interactions GloBI sur 4 types (connectance 11.4%, 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°
3,0°C
Annual rain
483mm
Moisture idx (CMI)
-0,39
Runoff
54mm/an
PET
862mm
AET
411mm
Mean slope
8,0°
Water table
715cm
Forest
60%
Crops
8%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)