HydroBASINS lev08 watershed · #7080420440
Bassin de South Fork Madison 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 : Fremont, Gallatin, Teton
Sub-basin area
399,5km²
Upstream area
399,5km²
Discharge
4,5m³/s
Mean elev.
2 260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Gallatin312.1 km²78.0% of basin
- Teton71.0 km²17.7% of basin
- FremontIdaho · United States17.3 km²4.3% of basin
8 intersecting protected areas
Yellowstone National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
138.24 km² overlap
Yellowstone
IUCN IINational Park
138.14 km² overlap
Recommended Wilderness
136.44 km² overlap
Yellowstone
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
136.06 km² overlap
South Fork Madison River
IUCN VEasement
2.59 km² overlap
South Fork Meadows Fee
IUCN VPrivate Conservation Land
0.33 km² overlap
South Fork Meadows
IUCN VEasement
0.16 km² overlap
Obsidian Sands
IUCN IaResearch Natural Area
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
714 distinct species · 6 668 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Madison River : 25 espèces reliées par 96 interactions GloBI sur 5 types (connectance 14.4%, filtre Serrano α=0.2). 12 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°
0,4°C
Annual rain
660mm
Moisture idx (CMI)
-0,17
Runoff
355mm/an
PET
803mm
AET
524mm
Mean slope
5,3°
Water table
238cm
Forest
97%
Crops
1%
Urban
0%
Protected
35%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)