HydroBASINS lev08 watershed · #7080472130
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 2 administrative regions : Clayton, Grant
Sub-basin area
486,7km²
Upstream area
205 859,5km²
Discharge
1 448,17m³/s
Mean elev.
275m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Yellow River2060 km²
- Bassin de Wisconsin River307 km²
2 dept-equivalent regions (GADM L2)
- ClaytonIowa · United States297.1 km²60.9% of basin
- Grant190.5 km²39.1% of basin
8 intersecting protected areas
Wetland of International Importance (Ramsar Site)
69.09 km² overlap
Refuge
44.06 km² overlap
Wildlife And Fish Refuge
19.06 km² overlap
Wildlife And Fish Refuge
9.71 km² overlap
Sny McGill - North Cedar
IUCN VWildlife Management Area
7.71 km² overlap
Refuge
3.48 km² overlap
Effigy Mounds
IUCN IIINational Monument
0.54 km² overlap
Driftless Area
IUCN IVNational Wildlife Refuge
0.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 210 distinct species · 191 435 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 : 24 espèces reliées par 59 interactions GloBI sur 4 types (connectance 10.5%, filtre Serrano α=0.2). 10 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°
8,1°C
Annual rain
830mm
Moisture idx (CMI)
-0,14
Runoff
254mm/an
PET
963mm
AET
702mm
Mean slope
4,1°
Water table
216cm
Forest
53%
Crops
39%
Urban
0%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)