HydroBASINS lev08 watershed · #2080021870
Bassin du Pont de la Reine
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 : Manche
Sub-basin area
145km²
Upstream area
145km²
Discharge
3,08m³/s
Mean elev.
31m
Administrative coverage
19 communes (GADM L5)Available for FRA, RWA
- Pirou27.83 km²96% commune
- Geffosses16.34 km²100% commune
- Agon-Coutainville14.86 km²100% commune
- Gouville-sur-Mer13.65 km²100% commune
- Blainville-sur-Mer12.63 km²100% commune
- Montsurvent8.33 km²97% commune
- Gratot8.24 km²74% commune
- Muneville-le-Bingard7.57 km²38% commune
- Boisroger5.38 km²100% commune
- Créances5.11 km²24% commune
- Tourville-sur-Sienne4.86 km²61% commune
- Anneville-sur-Mer4.18 km²100% commune
- Saint-Malo-de-la-Lande3.75 km²100% commune
- Brainville2.86 km²94% commune
- La Feuillie2.34 km²18% commune
- Servigny1.58 km²41% commune
- Saint-Germain-sur-Ay0.22 km²1% commune
- Ancteville0.06 km²1% commune
- Bricqueville-la-Blouette0.01 km²0% commune
8 intersecting protected areas
Regional Nature Park
42.61 km² overlap
Havre de Saint-Germain-sur-Ay et Landes de Lessay
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
9.81 km² overlap
Littoral Ouest du Cotentin de Bréhal à Pirou
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
8.71 km² overlap
Havre de la Sienne
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.04 km² overlap
Pointe d\'agon
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
1.68 km² overlap
Forest Managed Biological Reserve
0.21 km² overlap
marais de gouville-sur-mer
IUCN IVLand acquired by a regional conservatory of natural areas
0.20 km² overlap
Havre de geffosses
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 548 distinct species · 63 353 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 du Pont de la Reine : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 195 interactions GloBI sur 6 types (connectance 15.3%, filtre Serrano α=0.2). 36 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°
11,5°C
Annual rain
806mm
Moisture idx (CMI)
0,13
Runoff
670mm/an
PET
700mm
AET
538mm
Mean slope
0,9°
Water table
69cm
Forest
0%
Crops
42%
Urban
0%
Protected
30%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)