HydroBASINS lev08 watershed · #7080592200
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 5 administrative regions : Greeley, Hamilton, Kearny, Kiowa, Prowers
Sub-basin area
2 554,1km²
Upstream area
65 573,4km²
Discharge
18,25m³/s
Mean elev.
1 059m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Two Butte Creek2091 km²
- Bassin de Arkansas River1230 km²
5 dept-equivalent regions (GADM L2)
- Hamilton1543.7 km²60.4% of basin
- 430.4 km²16.8% of basin
- 325.0 km²12.7% of basin
- Kiowa238.8 km²9.3% of basin
- 17.8 km²0.7% of basin
4 intersecting protected areas
Lower Purgatoire
IUCN VEasement
3.00 km² overlap
Hamilton State
IUCN VFishing Lake And Wildlife Area
1.32 km² overlap
Arkansas River
IUCN Not AssignedState Wildlife Area
0.42 km² overlap
Cottonwood Flats
IUCN VWildlife Area
0.35 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 038 distinct species · 29 347 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 22 espèces reliées par 85 interactions GloBI sur 4 types (connectance 18.3%, 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°
11,5°C
Annual rain
403mm
Moisture idx (CMI)
-0,70
Runoff
7mm/an
PET
1 323mm
AET
343mm
Mean slope
0,7°
Water table
390cm
Forest
0%
Crops
63%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)