HydroBASINS lev08 watershed · #7080047170
Bassin de Gulf Intracoastal Waterway
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 9 administrative regions : Ascension, Assumption, Jefferson, Lafourche, Orleans +4
Sub-basin area
2 090km²
Upstream area
2 090km²
Discharge
49,86m³/s
Mean elev.
4m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 654.2 km²31.3% of basin
- 633.6 km²30.4% of basin
- Jefferson352.1 km²16.9% of basin
- 202.3 km²9.7% of basin
- 132.4 km²6.3% of basin
- 68.9 km²3.3% of basin
- 41.8 km²2.0% of basin
- 1.5 km²0.1% of basin
1 moreFull L2 list
- Ascension0.5 km² · 0.0%
6 intersecting protected areas
Marine Protected Area
82.36 km² overlap
National Historical Park
65.77 km² overlap
Bayou Des Allemands
IUCN VState Wild or Scenic River
10.51 km² overlap
Reserve Program
3.52 km² overlap
Reserve Program
2.23 km² overlap
Bayou Segnette
IUCN IIIState Park
0.93 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 890 distinct species · 153 210 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Gulf Intracoastal Waterway : 34 espèces reliées par 87 interactions GloBI sur 4 types (connectance 8.8%, 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°
20,2°C
Annual rain
1 597mm
Moisture idx (CMI)
0,13
Runoff
747mm/an
PET
1 387mm
AET
1 232mm
Mean slope
0,1°
Water table
6cm
Forest
54%
Crops
11%
Urban
3%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)