HydroBASINS lev08 watershed · #7080756360
Bassin de Mermentau 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 2 administrative regions : Acadia, Jefferson Davis
Sub-basin area
67,8km²
Upstream area
3 719,2km²
Discharge
79,71m³/s
Mean elev.
7m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bayou des Cannes1864 km²
- Bassin de Bayou Nezpique627 km²
2 dept-equivalent regions (GADM L2)
- 38.8 km²57.2% of basin
- 29.0 km²42.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
284 distinct species · 1 427 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 Mermentau River : 28 espèces reliées par 87 interactions GloBI sur 3 types (connectance 10.1%, filtre Serrano α=0.2). 14 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°
19,7°C
Annual rain
1 516mm
Moisture idx (CMI)
0,09
Runoff
734mm/an
PET
1 385mm
AET
1 170mm
Mean slope
0,4°
Water table
13cm
Forest
25%
Crops
59%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)