HydroBASINS lev08 watershed · #7080386370
Bassin de 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 2 administrative regions : Gallatin, Madison
Sub-basin area
3 158,9km²
Upstream area
6 524,9km²
Discharge
50,22m³/s
Mean elev.
1 993m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Madison River559 km²
- Bassin de West Fork Madison River535 km²
2 dept-equivalent regions (GADM L2)
- Madison2981.2 km²94.2% of basin
- Gallatin184.9 km²5.8% of basin
10 intersecting protected areas
Lee Metcalf
IUCN IbWilderness
405.05 km² overlap
Spanish Peaks Macrosite
IUCN VEasement
297.35 km² overlap
Upper Madison River
IUCN VEasement
73.00 km² overlap
Lee Metcalf
IUCN Not AssignedNational Wildlife Refuge
25.65 km² overlap
Odell Creek Wet
IUCN Not AssignedWetlands
25.30 km² overlap
Blaine Spring Creek
IUCN VEasement
21.05 km² overlap
Axolotl Lakes
IUCN IbWilderness Study Area
19.65 km² overlap
Cave Mountain
IUCN IaResearch Natural Area
18.29 km² overlap
Upper Madison River Fee
IUCN VPrivate Conservation Land
1.39 km² overlap
1 more protected areassorted by overlap area
Reserve Program
1.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 853 distinct species · 117 826 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Madison River : 20 espèces reliées par 69 interactions GloBI sur 3 types (connectance 17.0%, 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°
3,1°C
Annual rain
519mm
Moisture idx (CMI)
-0,36
Runoff
191mm/an
PET
846mm
AET
432mm
Mean slope
10,1°
Water table
446cm
Forest
55%
Crops
8%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)