HydroBASINS lev08 watershed · #7080581000
Bassin de Silver Creek
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 6 administrative regions : Bond, Clinton, Macoupin, Madison, Montgomery +1
Sub-basin area
1 242,1km²
Upstream area
1 242,1km²
Discharge
9,81m³/s
Mean elev.
158m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- Madison697.5 km²56.1% of basin
- Saint Clair460.9 km²37.1% of basin
- 43.0 km²3.5% of basin
- 28.6 km²2.3% of basin
- Montgomery9.2 km²0.7% of basin
- 3.8 km²0.3% of basin
10 intersecting protected areas
Reserve Program
1.20 km² overlap
Swirc&D
IUCN VOpen Space
0.58 km² overlap
Silver Creek Woods
IUCN VConservation Area
0.57 km² overlap
Freeburg Woods
IUCN VConservation Area
0.47 km² overlap
Silver Creek Shrub Swamp
IUCN VConservation Area
0.37 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Madison, IL
IUCN VConservation Easement
0.23 km² overlap
Reserve Program
0.20 km² overlap
Berger
IUCN Not AssignedConservation Easement
0.15 km² overlap
State Natural Area
0.14 km² overlap
1 more protected areassorted by overlap area
Wildlife Area
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 452 distinct species · 85 370 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Silver Creek : 27 espèces reliées par 78 interactions GloBI sur 4 types (connectance 12.4%, 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°
12,7°C
Annual rain
963mm
Moisture idx (CMI)
-0,15
Runoff
249mm/an
PET
1 134mm
AET
813mm
Mean slope
0,5°
Water table
33cm
Forest
5%
Crops
68%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)