HydroBASINS lev08 watershed · #7080653470
Bassin de Pemiscot Bayou
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 4 administrative regions : Crittenden, Cross, Mississippi, Poinsett
Sub-basin area
789,8km²
Upstream area
13 395,8km²
Discharge
243,76m³/s
Mean elev.
67m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
4 dept-equivalent regions (GADM L2)
- MississippiArkansas · United States379.2 km²48.0% of basin
- PoinsettArkansas · United States247.7 km²31.4% of basin
- CrossArkansas · United States130.0 km²16.5% of basin
- CrittendenArkansas · United States32.9 km²4.2% of basin
6 intersecting protected areas
Big
IUCN VLake
13.54 km² overlap
State Wildlife Management Area
6.36 km² overlap
Us-Ar-30-21
IUCN Not AssignedConservation Easement
3.25 km² overlap
Singer Forest
IUCN VNatural Area
1.01 km² overlap
Reserve Program
0.86 km² overlap
Big Lake
IUCN IVNational Wildlife Refuge
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
626 distinct species · 5 176 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Pemiscot Bayou : 27 espèces reliées par 78 interactions GloBI sur 4 types (connectance 12.4%, 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°
15,7°C
Annual rain
1 250mm
Moisture idx (CMI)
0,00
Runoff
666mm/an
PET
1 253mm
AET
944mm
Mean slope
0,0°
Water table
3cm
Forest
2%
Crops
83%
Urban
1%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)