HydroBASINS lev08 watershed · #7080533070
Bassin de Illinois 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 : Fulton, Logan, Mason, Peoria, Tazewell
Sub-basin area
1 401,1km²
Upstream area
40 828,6km²
Discharge
477,07m³/s
Mean elev.
168m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mackinaw River466 km²
- Bassin de Farm Creek430 km²
5 dept-equivalent regions (GADM L2)
- Fulton446.0 km²31.8% of basin
- 412.0 km²29.4% of basin
- 303.9 km²21.7% of basin
- 237.3 km²16.9% of basin
- 3.5 km²0.3% of basin
18 intersecting protected areas
Emiquon
IUCN IVNational Wildlife Refuge
33.36 km² overlap
Rice Lake State Fish and
IUCN VWildlife Area
28.79 km² overlap
Sand Ridge
IUCN VState Forest
27.45 km² overlap
The Emiquon Complex
IUCN Not ReportedWetland of International Importance (Ramsar Site)
25.82 km² overlap
Reserve Program
25.16 km² overlap
Chautauqua
IUCN IVNational Wildlife Refuge
19.45 km² overlap
Wildlife Area
17.65 km² overlap
Wildlife Area
5.58 km² overlap
Nature Conservancy
IUCN VNatural Area
5.16 km² overlap
9 more protected areassorted by overlap area
Green Valley Site
IUCN VConservation Area
3.92 km² overlap
Prairie Hills Wetland
IUCN VWetland
2.16 km² overlap
Reserve Program
1.74 km² overlap
Wildlife Area
1.37 km² overlap
Sparks Ponds
IUCN VPond
0.93 km² overlap
Sparks Pond
IUCN VState Natural Area
0.67 km² overlap
Wildlife Area
0.30 km² overlap
Private Conservation Land
0.10 km² overlap
Manito State
IUCN VHabitat Area
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 597 distinct species · 405 382 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Illinois River : 27 espèces reliées par 62 interactions GloBI sur 3 types (connectance 11.1%, filtre Serrano α=0.2). 7 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°
10,7°C
Annual rain
939mm
Moisture idx (CMI)
-0,13
Runoff
287mm/an
PET
1 075mm
AET
792mm
Mean slope
0,7°
Water table
56cm
Forest
15%
Crops
63%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)