HydroBASINS lev08 watershed · #7080048090
Bassin · #7080048090
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 1 administrative regions : Harris
Sub-basin area
92,6km²
Upstream area
92,6km²
Discharge
1,25m³/s
Mean elev.
6m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- Harris75.2 km²81.3% of basin
2 intersecting protected areas
Atkinson Island
IUCN VWildlife Management Area
0.62 km² overlap
Seabrook Wildlife
IUCN VWildlife Refuge
0.20 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 123 distinct species · 271 123 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 · #7080048090 : 23 espèces reliées par 75 interactions GloBI sur 3 types (connectance 12.6%, filtre Serrano α=0.2). 12 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°
20,4°C
Annual rain
1 239mm
Moisture idx (CMI)
-0,07
Runoff
566mm/an
PET
1 332mm
AET
1 044mm
Mean slope
0,3°
Water table
18cm
Forest
17%
Crops
11%
Urban
58%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)