HydroBASINS lev08 watershed · #7080499630
Bassin de West Fork West Branch Saint Joseph 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 4 administrative regions : Branch, Hillsdale, Steuben, Williams
Sub-basin area
349,5km²
Upstream area
349,5km²
Discharge
3,72m³/s
Mean elev.
322m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 281.6 km²80.5% of basin
- Williams36.4 km²10.4% of basin
- 24.7 km²7.1% of basin
- 7.3 km²2.1% of basin
5 intersecting protected areas
Lake La Su An
IUCN VWildlife Area
6.01 km² overlap
Reserve Program
0.67 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Hillsdale, MI
IUCN VConservation Easement
0.11 km² overlap
Reserve Program
0.05 km² overlap
Reserve Program
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 116 distinct species · 72 518 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 West Fork West Branch Saint Joseph River : 29 espèces reliées par 77 interactions GloBI sur 3 types (connectance 11.0%, 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°
8,5°C
Annual rain
904mm
Moisture idx (CMI)
-0,08
Runoff
303mm/an
PET
981mm
AET
739mm
Mean slope
1,0°
Water table
72cm
Forest
8%
Crops
59%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)