HydroBASINS lev08 watershed · #7080540990
Bassin de Sangamon 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 3 administrative regions : Cass, Mason, Menard
Sub-basin area
883,9km²
Upstream area
14 214,8km²
Discharge
132,81m³/s
Mean elev.
164m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Red Oak Ditch294 km²
- Bassin de Sangamon River102 km²
3 dept-equivalent regions (GADM L2)
- 476.2 km²53.8% of basin
- 254.0 km²28.7% of basin
- 154.7 km²17.5% of basin
9 intersecting protected areas
Wildlife Area
66.98 km² overlap
Sanganois State Fish and
IUCN VWildlife Area
16.20 km² overlap
Sand Prairie-Scrub Oak
IUCN VState Natural Area
2.48 km² overlap
Bob Spanski's Walden Too
IUCN VLand And Water Reserve
0.35 km² overlap
Long Branch Sand Prairie
IUCN VState Natural Area
0.35 km² overlap
Knuppel Woods
IUCN VConservation Area
0.20 km² overlap
Conservation Area
0.02 km² overlap
Nature Preserve
0.02 km² overlap
Cemetery
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 601 distinct species · 29 936 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Sangamon River : 31 espèces reliées par 82 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 8 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°
11,1°C
Annual rain
944mm
Moisture idx (CMI)
-0,14
Runoff
283mm/an
PET
1 093mm
AET
797mm
Mean slope
0,6°
Water table
44cm
Forest
16%
Crops
66%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)