HydroBASINS lev08 watershed · #7080441970
Bassin de Big South Branch Pere Marquette 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 : Lake, Mason, Newaygo, Oceana
Sub-basin area
680,1km²
Upstream area
680,3km²
Discharge
6,15m³/s
Mean elev.
260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 343.2 km²50.4% of basin
- 189.1 km²27.7% of basin
- Mason109.6 km²16.1% of basin
- Lake39.5 km²5.8% of basin
4 intersecting protected areas
Reserve Program
7.88 km² overlap
Reserve Program
0.55 km² overlap
08-62-0035
IUCN Not AssignedConservation Easement
0.11 km² overlap
Pere Marquette, Michigan
IUCN VWild and Scenic River
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 524 distinct species · 36 846 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 Big South Branch Pere Marquette River : 18 espèces reliées par 73 interactions GloBI sur 4 types (connectance 15.7%, filtre Serrano α=0.2). 13 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°
7,4°C
Annual rain
875mm
Moisture idx (CMI)
-0,07
Runoff
281mm/an
PET
940mm
AET
682mm
Mean slope
1,1°
Water table
94cm
Forest
92%
Crops
14%
Urban
0%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)