HydroBASINS lev08 watershed · #2080020470
Bassin de Ruisseau d'Harbaris
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 : Gironde
Sub-basin area
269,3km²
Upstream area
269,3km²
Discharge
3,88m³/s
Mean elev.
30m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 265.1 km²98.2% of basin
8 communes (GADM L5)Available for FRA, RWA
- Lanton118.33 km²85% commune
- Audenge75.58 km²93% commune
- Arès28.74 km²59% commune
- Andernos-les-Bains20.47 km²100% commune
- Biganos16.71 km²31% commune
- Marcheprime3.86 km²16% commune
- Saint-Jean-d'Illac0.95 km²1% commune
- Lège-Cap-Ferret0.48 km²0% commune
13 intersecting protected areas
Landes De Gascogne
IUCN VRegional Nature Park
213.11 km² overlap
Bassin d'Arcachon et banc d'Arguin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
16.30 km² overlap
Bassin d'Arcachon et Cap Ferret
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
16.30 km² overlap
Bassin d'Arcachon et Cap Ferret
IUCN Not ReportedMarine Protected Area (OSPAR)
16.29 km² overlap
Bassin d'Arcachon - Secteur du delta de la Leyre
IUCN Not ReportedWetland of International Importance (Ramsar Site)
13.55 km² overlap
Bassin D\'Arcachon
IUCN VMarine Nature Park
6.72 km² overlap
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
5.42 km² overlap
Saint-brice - le coulin
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.25 km² overlap
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.24 km² overlap
4 more protected areassorted by overlap area
Land acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.23 km² overlap
National Nature Reserve
1.08 km² overlap
Le Renet
IUCN IVBiotope Protection Order
0.02 km² overlap
Fleury - delta de l\'eyre
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 952 distinct species · 297 575 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Ruisseau d'Harbaris : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 4 types (connectance 9.5%, filtre Serrano α=0.2). 7 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°
12,8°C
Annual rain
1 032mm
Moisture idx (CMI)
0,10
Runoff
461mm/an
PET
932mm
AET
701mm
Mean slope
0,4°
Water table
31cm
Forest
78%
Crops
9%
Urban
8%
Protected
38%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)