HydroBASINS lev08 watershed · #7080439700
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 : Buffalo, Trempealeau, Winona
Sub-basin area
210km²
Upstream area
153 917,7km²
Discharge
965,46m³/s
Mean elev.
288m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Garvin Brook275 km²
- Bassin de Pap Slough10 km²
3 dept-equivalent regions (GADM L2)
- 163.1 km²77.5% of basin
- Buffalo45.7 km²21.7% of basin
- 1.6 km²0.8% of basin
15 intersecting protected areas
Wetland of International Importance (Ramsar Site)
11.21 km² overlap
Refuge
9.26 km² overlap
Wildlife And Fish Refuge
3.52 km² overlap
Trempealeau
IUCN IVNational Wildlife Refuge
3.14 km² overlap
Prairie Island
IUCN VPark
1.37 km² overlap
Wildlife And Fish Refuge
1.14 km² overlap
Martin County
IUCN VWaterfowl Production Area
0.35 km² overlap
Latsch Island
IUCN VLocal Conservation Area
0.13 km² overlap
Easement
0.12 km² overlap
6 more protected areassorted by overlap area
Aquatic Management Area
0.06 km² overlap
Statewide
IUCN VWildlife Habitat
0.06 km² overlap
Aquatic Management Area
0.05 km² overlap
Pope County
IUCN VWaterfowl Production Area
0.03 km² overlap
Easement
0.03 km² overlap
Aquatic Management Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 002 distinct species · 44 162 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 : 38 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 90 interactions GloBI sur 4 types (connectance 9.5%, filtre Serrano α=0.2). 6 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°
7,0°C
Annual rain
827mm
Moisture idx (CMI)
-0,13
Runoff
255mm/an
PET
953mm
AET
699mm
Mean slope
6,5°
Water table
258cm
Forest
60%
Crops
27%
Urban
14%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)