HydroBASINS lev08 watershed · #7080652100
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 3 administrative regions : Franklin, Johnson, Logan
Sub-basin area
2 585,3km²
Upstream area
388 293,6km²
Discharge
1 140,02m³/s
Mean elev.
207m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Arkansas River1835 km²
- Bassin de Mulberry River1255 km²
3 dept-equivalent regions (GADM L2)
- LoganArkansas · United States995.5 km²38.5% of basin
- FranklinArkansas · United States857.3 km²33.2% of basin
- JohnsonArkansas · United States732.6 km²28.3% of basin
3 intersecting protected areas
H.E. Flanagan Prairie
IUCN VNatural Area
1.04 km² overlap
Private Conservation Land
0.36 km² overlap
Reserve Program
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 479 distinct species · 50 399 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 Arkansas River : 30 espèces reliées par 76 interactions GloBI sur 4 types (connectance 10.3%, filtre Serrano α=0.2). 9 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°
15,3°C
Annual rain
1 150mm
Moisture idx (CMI)
-0,14
Runoff
315mm/an
PET
1 335mm
AET
958mm
Mean slope
3,5°
Water table
239cm
Forest
58%
Crops
29%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)