HydroBASINS lev08 watershed · #7080694490
Bassin de Smackover Creek
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 : Calhoun, Columbia, Nevada, Ouachita, Union
Sub-basin area
1 415,6km²
Upstream area
1 415,6km²
Discharge
20,19m³/s
Mean elev.
74m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- UnionArkansas · United States619.3 km²43.8% of basin
- OuachitaArkansas · United States492.6 km²34.8% of basin
- ColumbiaArkansas · United States235.4 km²16.6% of basin
- NevadaArkansas · United States67.6 km²4.8% of basin
- CalhounArkansas · United States0.0 km²0.0% of basin
2 intersecting protected areas
Wildlife Management Area
2.10 km² overlap
Logoly
IUCN VNatural Area
0.80 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
804 distinct species · 3 010 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Smackover Creek : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 111 interactions GloBI sur 4 types (connectance 10.3%, filtre Serrano α=0.2). 12 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 297mm
Moisture idx (CMI)
-0,07
Runoff
456mm/an
PET
1 395mm
AET
1 034mm
Mean slope
1,3°
Water table
62cm
Forest
97%
Crops
2%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)