HydroBASINS lev08 watershed · #7080677860
Bassin de Caddo 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 : Clark, Garland, Hot Spring, Montgomery, Pike
Sub-basin area
1 251,6km²
Upstream area
1 251,9km²
Discharge
21,16m³/s
Mean elev.
226m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- MontgomeryArkansas · United States589.0 km²47.1% of basin
- ClarkArkansas · United States358.5 km²28.6% of basin
- Hot SpringArkansas · United States201.6 km²16.1% of basin
- PikeArkansas · United States101.0 km²8.1% of basin
- GarlandArkansas · United States1.3 km²0.1% of basin
3 intersecting protected areas
Gap Creek
IUCN IaResearch Natural Area
4.63 km² overlap
Crayfish Complex Uplift
IUCN VPrivate Conservation Land
1.17 km² overlap
Gap Creek
IUCN VNatural Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 756 distinct species · 20 330 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 Caddo River : 40 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 4 types (connectance 6.6%, 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°
15,5°C
Annual rain
1 441mm
Moisture idx (CMI)
0,06
Runoff
500mm/an
PET
1 350mm
AET
1 085mm
Mean slope
4,1°
Water table
200cm
Forest
91%
Crops
9%
Urban
0%
Protected
26%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)