HydroBASINS lev08 watershed · #7080715630
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 8 administrative regions : Bolivar, Chicot, Desha, East Carroll, Issaquena +3
Sub-basin area
2 382km²
Upstream area
2 880 663,5km²
Discharge
18 124,29m³/s
Mean elev.
37m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arkansas River493 km²
- Bassin de Mississippi River298 km²
8 dept-equivalent regions (GADM L2)
- Washington429.2 km²18.0% of basin
- 412.3 km²17.3% of basin
- ChicotArkansas · United States410.1 km²17.2% of basin
- 346.7 km²14.6% of basin
- DeshaArkansas · United States244.9 km²10.3% of basin
- 237.4 km²10.0% of basin
- Warren157.4 km²6.6% of basin
- Madison142.7 km²6.0% of basin
19 intersecting protected areas
Cache-Lower White Rivers
IUCN Not ReportedWetland of International Importance (Ramsar Site)
70.51 km² overlap
Choctaw Island
IUCN VState Wildlife Management Area
36.60 km² overlap
Reserve Program
31.67 km² overlap
Us-Ms-58-3
IUCN Not AssignedConservation Easement
28.01 km² overlap
Shipland
IUCN VState Conservation Area
16.60 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), East Carroll, LA
IUCN VConservation Easement
15.62 km² overlap
Reserve Program
12.51 km² overlap
Reserve Program
9.50 km² overlap
Reserve Program
8.82 km² overlap
10 more protected areassorted by overlap area
Reserve Program
6.53 km² overlap
Us-Ms-58-30
IUCN Not AssignedConservation Easement
4.02 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Madison, LA
IUCN Not AssignedConservation Easement
3.36 km² overlap
Reserve Program
2.43 km² overlap
Reserve Program
1.55 km² overlap
Reserve Program
1.50 km² overlap
Reserve Program
1.14 km² overlap
State Conservation Area
0.67 km² overlap
Mitigation Bank | Mississippi Land Trust
IUCN Not AssignedConservation Easement
0.43 km² overlap
Conservation Easement
0.10 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 876 distinct species · 41 142 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 29 espèces reliées par 80 interactions GloBI sur 4 types (connectance 10.3%, 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°
17,5°C
Annual rain
1 371mm
Moisture idx (CMI)
0,01
Runoff
756mm/an
PET
1 355mm
AET
1 014mm
Mean slope
0,5°
Water table
33cm
Forest
45%
Crops
38%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)