HydroBASINS lev08 watershed · #7080061930
Bassin de la Manche 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 3 administrative regions : Division No. 1, Division No. 2, Division No. 7
Sub-basin area
8 705,9km²
Upstream area
8 705,9km²
Discharge
4,65m³/s
Mean elev.
106m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- Division No. 15233.7 km²59.9% of basin
- Division No. 73050.1 km²34.9% of basin
- Division No. 24.3 km²0.0% of basin
23 intersecting protected areas
Avalon Wilderness Reserve
IUCN IbWilderness Reserve
276.08 km² overlap
Butter Pot Provincial Park
IUCN IIProvincial Park
28.33 km² overlap
Chance Cove Provincial Park
IUCN IIProvincial Park
22.01 km² overlap
La Manche Provincial Park
IUCN IIProvincial Park
13.92 km² overlap
Provincial Park
7.76 km² overlap
Marine Drive Provincial Park
IUCN IIProvincial Park
6.27 km² overlap
Ecological Reserve
5.70 km² overlap
Ecological Reserve
5.36 km² overlap
Environmental Conservation Land Use Designation Barren Lands
4.86 km² overlap
14 more protected areassorted by overlap area
Elliston Municipal PA
IUCN VMunicipal Stewardship Area
4.31 km² overlap
Ecological Reserve
3.65 km² overlap
Ecological Reserve
2.79 km² overlap
Ecological Reserve
1.45 km² overlap
Mistaken Point
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1.43 km² overlap
Ecological Reserve
1.31 km² overlap
Provincial Park
1.15 km² overlap
Privately Protected Area
0.99 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.17 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.10 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.05 km² overlap
Privately Protected Area
0.05 km² overlap
Dungeon Provincial Park
IUCN IIIProvincial Park
0.02 km² overlap
Privately Protected Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 232 distinct species · 1 005 860 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 la Manche River : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 64 interactions GloBI sur 3 types (connectance 15.8%, filtre Serrano α=0.2). 8 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°
4,7°C
Annual rain
1 309mm
Moisture idx (CMI)
0,54
Runoff
1 033mm/an
PET
591mm
AET
558mm
Mean slope
3,7°
Water table
216cm
Forest
53%
Crops
0%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)