HydroBASINS lev08 watershed · #7080682350
Bassin de Little Missouri 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 6 administrative regions : Hempstead, Howard, Montgomery, Nevada, Pike +1
Sub-basin area
2 015km²
Upstream area
2 015km²
Discharge
33,52m³/s
Mean elev.
187m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- PikeArkansas · United States1046.7 km²52.0% of basin
- HempsteadArkansas · United States556.9 km²27.6% of basin
- HowardArkansas · United States194.5 km²9.7% of basin
- MontgomeryArkansas · United States86.4 km²4.3% of basin
- PolkArkansas · United States68.2 km²3.4% of basin
- NevadaArkansas · United States61.8 km²3.1% of basin
11 intersecting protected areas
Lake Greeson
IUCN VWildlife Management Area
127.98 km² overlap
Wild and Scenic River
15.98 km² overlap
State Wildlife Management Area
10.71 km² overlap
Ozan
IUCN VState Wildlife Management Area
2.34 km² overlap
Caney Creek
IUCN IbWilderness
2.26 km² overlap
Reserve Program
1.29 km² overlap
Roaring Branch
IUCN IaResearch Natural Area
1.07 km² overlap
Blevins
IUCN VState Wildlife Management Area
0.52 km² overlap
Caney Creek National
IUCN VGame Refuge
0.49 km² overlap
2 more protected areassorted by overlap area
Stone Road Glade
IUCN VNatural Area
0.44 km² overlap
Private Conservation Land
0.15 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 224 distinct species · 23 288 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Little Missouri River : 32 espèces reliées par 68 interactions GloBI sur 4 types (connectance 8.3%, 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°
15,9°C
Annual rain
1 410mm
Moisture idx (CMI)
0,04
Runoff
484mm/an
PET
1 357mm
AET
1 078mm
Mean slope
2,8°
Water table
138cm
Forest
92%
Crops
11%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)