HydroBASINS lev08 watershed · #7080047260
Bassin de Bayou Petite Caillou
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 : Lafourche, Terrebonne
Sub-basin area
572,5km²
Upstream area
572,5km²
Discharge
3,77m³/s
Mean elev.
1m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 515.6 km²90.2% of basin
- 5.8 km²1.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
431 distinct species · 21 759 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Bayou Petite Caillou : 23 espèces reliées par 70 interactions GloBI sur 3 types (connectance 11.1%, filtre Serrano α=0.2). 13 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°
20,5°C
Annual rain
1 591mm
Moisture idx (CMI)
0,15
Runoff
740mm/an
PET
1 346mm
AET
1 234mm
Mean slope
0,1°
Water table
5cm
Forest
8%
Crops
10%
Urban
1%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)