HydroBASINS lev08 watershed · #7080632730
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 2 administrative regions : Osage, Pawnee
Sub-basin area
828,4km²
Upstream area
142 221,6km²
Discharge
210,22m³/s
Mean elev.
265m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 4 basins
- Bassin de Black Bear Creek1700 km²
- Bassin · #7080074260275 km²
- Bassin de Arkansas River132 km²
- Bassin · #7080083090122 km²
2 dept-equivalent regions (GADM L2)
- OsageOklahoma · United States477.0 km²57.6% of basin
- PawneeOklahoma · United States351.5 km²42.4% of basin
5 intersecting protected areas
Keystone
IUCN VWildlife Management Area
43.71 km² overlap
Keystone Woodlands
IUCN VEasement
2.82 km² overlap
Keystone Ancient
IUCN VForest
1.99 km² overlap
Conservation Easement
1.23 km² overlap
Preserve
0.41 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 300 distinct species · 10 127 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 Arkansas River : 34 espèces reliées par 82 interactions GloBI sur 3 types (connectance 8.7%, 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°
15,1°C
Annual rain
936mm
Moisture idx (CMI)
-0,29
Runoff
202mm/an
PET
1 324mm
AET
792mm
Mean slope
2,1°
Water table
180cm
Forest
32%
Crops
12%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)