HydroBASINS lev08 watershed · #7080533550
Bassin de Mississippi 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 : Clark, Hancock, Lee
Sub-basin area
61,1km²
Upstream area
346 571,8km²
Discharge
2 563,79m³/s
Mean elev.
171m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Mississippi River1326 km²
- Bassin de Des Moines River1177 km²
3 dept-equivalent regions (GADM L2)
- Hancock49.4 km²80.8% of basin
- Clark11.7 km²19.2% of basin
- LeeIowa · United States0.0 km²0.0% of basin
4 intersecting protected areas
Great River
IUCN IVNational Wildlife Refuge
0.76 km² overlap
Cedar Glen
IUCN VState Natural Area
0.24 km² overlap
Reserve
0.18 km² overlap
State Natural Area
0.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 808 distinct species · 5 308 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 Mississippi River : 31 espèces reliées par 66 interactions GloBI sur 3 types (connectance 8.9%, 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°
10,8°C
Annual rain
957mm
Moisture idx (CMI)
-0,09
Runoff
252mm/an
PET
1 055mm
AET
808mm
Mean slope
0,9°
Water table
111cm
Forest
14%
Crops
57%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)