HydroBASINS lev08 watershed · #7080492270

Bassin de Portage 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 : Calhoun, Cass, Kalamazoo, Saint Joseph, Van Buren

29% lakePfafstetter: 72589080

Sub-basin area

939,4km²

Upstream area

939,4km²

Discharge

7,76m³/s

Mean elev.

270m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Prairie River1358 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

5 dept-equivalent regions (GADM L2)

Kalamazoo
Michigan · United States
521.2 km²
55.4% of basin
Saint Joseph
Michigan · United States
286.6 km²
30.5% of basin
Cass
Michigan · United States
115.4 km²
12.3% of basin
Van Buren
Michigan · United States
14.4 km²
1.5% of basin
Calhoun
Michigan · United States
3.3 km²
0.3% of basin

16 intersecting protected areas

Gourdneck State
IUCN V
Game Area
8.14 km² overlap
Crane Pond State Game
IUCN V
Pond
5.48 km² overlap
09-11-0063
IUCN Not Assigned
Conservation Easement
1.62 km² overlap
Bishop's Bog
IUCN V
Nature Preserve
0.97 km² overlap
Farm Service Agency Interest Of Mi
IUCN Not Assigned
Conservation Easement
0.66 km² overlap
Spirit Springs
IUCN V
Nature Preserve
0.50 km² overlap
West Lake
IUCN V
Nature Preserve
0.44 km² overlap
Justin's Marsh
IUCN V
Nature Preserve
0.35 km² overlap
Spring Creek State
IUCN V
Game Area
0.33 km² overlap

7 more protected areassorted by overlap area

Brewer Woods
IUCN V
Nature Sanctuary
0.17 km² overlap
Hidden Marsh
IUCN V
Sanctuary
0.13 km² overlap
Flowerfield Creek
IUCN V
Nature Preserve
0.08 km² overlap
Lacey
IUCN V
Preserve
0.05 km² overlap
Coon Hollow
IUCN V
Nature Preserve
0.04 km² overlap
00-75-0034
IUCN Not Assigned
Conservation Easement
0.01 km² overlap
01-39-0050
IUCN Not Assigned
Conservation Easement
0.01 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

2 556 distinct species · 230 045 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Portage River : 30 espèces reliées par 67 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.101

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

8,9°C

Annual rain

920mm

Moisture idx (CMI)

-0,06

Runoff

262mm/an

PET

979mm

AET

741mm

Mean slope

0,8°

Water table

35cm

Forest

37%

Crops

45%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)