HydroBASINS lev08 watershed · #7080744040
Bassin de Pearl 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 7 administrative regions : Jefferson Davis, Lamar, Lawrence, Marion, Pearl River +2
Sub-basin area
2 497,4km²
Upstream area
16 388,9km²
Discharge
289,88m³/s
Mean elev.
87m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de White Sand Creek359 km²
- Bassin de Coopers Creek144 km²
7 dept-equivalent regions (GADM L2)
- Marion1362.7 km²54.6% of basin
- Lamar393.6 km²15.8% of basin
- Jefferson Davis261.7 km²10.5% of basin
- 135.8 km²5.4% of basin
- Washington132.2 km²5.3% of basin
- Lawrence132.1 km²5.3% of basin
- 77.0 km²3.1% of basin
4 intersecting protected areas
Marion County
IUCN VState Conservation Area
29.79 km² overlap
Reserve Program
3.34 km² overlap
Reserve Program
0.72 km² overlap
Private
IUCN VPRIVATE
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 124 distinct species · 29 899 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 Pearl River : 31 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 5 types (connectance 9.5%, filtre Serrano α=0.2). 11 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°
18,7°C
Annual rain
1 572mm
Moisture idx (CMI)
0,07
Runoff
611mm/an
PET
1 463mm
AET
1 171mm
Mean slope
1,3°
Water table
77cm
Forest
93%
Crops
10%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)