HydroBASINS lev08 watershed · #7080319680
Bassin de Middle Fork Flathead 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 : Flathead, Glacier, Lewis and Clark, Pondera, Teton
Sub-basin area
2 934,2km²
Upstream area
2 934,4km²
Discharge
61,25m³/s
Mean elev.
1 719m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 2907.2 km²98.8% of basin
- 19.3 km²0.7% of basin
- 9.7 km²0.3% of basin
- Teton5.8 km²0.2% of basin
- 1.0 km²0.0% of basin
24 intersecting protected areas
Waterton Glacier International Peace
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1472.22 km² overlap
Waterton Glacier International Peace Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1416.68 km² overlap
Glacier
IUCN IINational Park
1415.61 km² overlap
Glacier Proposed or Recom
IUCN IbRecommended Wilderness
1322.41 km² overlap
Great Bear
IUCN IbWilderness
863.10 km² overlap
Bob Marshall
IUCN IbWilderness
371.17 km² overlap
Flathead, Montana
IUCN VWild and Scenic River
83.37 km² overlap
Tracts 3940, 3950, 3960 & 3970
IUCN Not AssignedSCENIC EASEMENT
2.73 km² overlap
Tract 3900
IUCN Not AssignedSCENIC EASEMENT
0.51 km² overlap
15 more protected areassorted by overlap area
Donovan
IUCN VConservation Easement
0.31 km² overlap
Tract 2930
IUCN Not AssignedSCENIC EASEMENT
0.29 km² overlap
Tract 4010 Tract 4020
IUCN Not AssignedSCENIC EASEMENT
0.20 km² overlap
Tract 3941
IUCN Not AssignedSCENIC EASEMENT
0.18 km² overlap
Tract 5574
IUCN Not AssignedSCENIC EASEMENT
0.08 km² overlap
Tract 3990
IUCN Not AssignedSCENIC EASEMENT
0.06 km² overlap
Tract 3930
IUCN Not AssignedSCENIC EASEMENT
0.04 km² overlap
Tract 5575
IUCN Not AssignedSCENIC EASEMENT
0.02 km² overlap
Sloan Scenic
IUCN Not AssignedEasement
0.02 km² overlap
Tracts 4230, 4450, 4460, 4470, 4480 & 4490
IUCN Not AssignedSCENIC EASEMENT
0.01 km² overlap
Tracts 4200, 4210, 4220 & 4370.
IUCN Not AssignedSCENIC EASEMENT
0.01 km² overlap
Tract 5310 & Tract 5320
IUCN Not AssignedSCENIC EASEMENT
0.00 km² overlap
Tract 5330 & Tract 5340
IUCN Not AssignedSCENIC EASEMENT
0.00 km² overlap
Tract 4620
IUCN Not AssignedSCENIC EASEMENT
0.00 km² overlap
Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 381 distinct species · 131 037 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 Middle Fork Flathead River : 26 espèces reliées par 76 interactions GloBI sur 4 types (connectance 10.8%, 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°
2,6°C
Annual rain
693mm
Moisture idx (CMI)
-0,09
Runoff
592mm/an
PET
766mm
AET
544mm
Mean slope
20,8°
Water table
733cm
Forest
90%
Crops
1%
Urban
0%
Protected
90%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)