HydroBASINS lev08 watershed · #7080589830
Bassin de Richland 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 4 administrative regions : Monroe, Randolph, Saint Clair, Washington
Sub-basin area
1 610,4km²
Upstream area
14 994,9km²
Discharge
122,84m³/s
Mean elev.
149m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Kaskaskia River1296 km²
- Bassin de Silver Creek1242 km²
4 dept-equivalent regions (GADM L2)
- Randolph670.3 km²41.6% of basin
- Saint Clair559.8 km²34.7% of basin
- Monroe381.3 km²23.7% of basin
- Washington0.1 km²0.0% of basin
13 intersecting protected areas
Wildlife Area
57.07 km² overlap
777007-333 &777021-333
IUCN VConservation Easement
0.64 km² overlap
Renault Cave System
IUCN VConservation Area
0.43 km² overlap
Storment Hauss
IUCN VNature Preserve
0.26 km² overlap
Lively Branch Woods
IUCN VConservation Area
0.26 km² overlap
New Athens Woods
IUCN VConservation Area
0.23 km² overlap
Wildlife Area
0.21 km² overlap
Bradley Branch Woods
IUCN VConservation Area
0.11 km² overlap
Baer Brothers Woodlot
IUCN VConservation Area
0.11 km² overlap
4 more protected areassorted by overlap area
Marissa Woods
IUCN VState Natural Area
0.10 km² overlap
Village
IUCN VOpen Space
0.05 km² overlap
Storment Hauss Woods
IUCN VConservation Area
0.04 km² overlap
Mississippi River
IUCN VConservation Area
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 281 distinct species · 219 875 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 Richland Creek : 25 espèces reliées par 74 interactions GloBI sur 4 types (connectance 11.7%, filtre Serrano α=0.2). 11 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°
13,0°C
Annual rain
1 012mm
Moisture idx (CMI)
-0,14
Runoff
254mm/an
PET
1 175mm
AET
845mm
Mean slope
0,8°
Water table
76cm
Forest
4%
Crops
61%
Urban
4%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)