HydroBASINS lev08 watershed · #7080686450
Bassin de Arkansas 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 4 administrative regions : Arkansas, Desha, Jefferson, Lincoln
Sub-basin area
492,5km²
Upstream area
409 027km²
Discharge
1 316,6m³/s
Mean elev.
51m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arkansas River128 km²
- Bassin de Bayou Meto74 km²
4 dept-equivalent regions (GADM L2)
- DeshaArkansas · United States275.4 km²55.9% of basin
- ArkansasArkansas · United States198.9 km²40.4% of basin
- LincolnArkansas · United States17.8 km²3.6% of basin
- JeffersonArkansas · United States0.2 km²0.0% of basin
7 intersecting protected areas
Cache-Lower White Rivers
IUCN Not ReportedWetland of International Importance (Ramsar Site)
129.67 km² overlap
Dale Bumpers White River
IUCN IVNational Wildlife Refuge
5.66 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Arkansas, AR
IUCN VConservation Easement
3.51 km² overlap
Trusten Holder
IUCN VState Wildlife Management Area
2.56 km² overlap
Lower White River Basin
IUCN VConservation Easement
0.48 km² overlap
Reserve Program
0.13 km² overlap
Reserve Program
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
984 distinct species · 23 073 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Arkansas River : 23 espèces reliées par 93 interactions GloBI sur 4 types (connectance 16.6%, 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°
17,0°C
Annual rain
1 311mm
Moisture idx (CMI)
-0,02
Runoff
645mm/an
PET
1 336mm
AET
986mm
Mean slope
0,6°
Water table
30cm
Forest
63%
Crops
38%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)