HydroBASINS lev08 watershed · #2080022240
Bassin de la Durdent
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 : Seine-Maritime
Sub-basin area
364,6km²
Upstream area
364,7km²
Discharge
7,34m³/s
Mean elev.
122m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- 365.7 km²100.0% of basin
77 communes (GADM L5)Available for FRA, RWA
- Grainville-la-Teinturière18.63 km²100% commune
- Doudeville15.00 km²100% commune
- Cany-Barville13.69 km²100% commune
- Saint-Vaast-Dieppedalle12.06 km²96% commune
- Étoutteville11.83 km²100% commune
- Héricourt-en-Caux11.13 km²100% commune
- Allouville-Bellefosse10.06 km²67% commune
- Ourville-en-Caux9.60 km²94% commune
- Écretteville-lès-Baons9.15 km²100% commune
- Valliquerville8.95 km²65% commune
- Grémonville8.62 km²100% commune
- Hautot-Saint-Sulpice8.30 km²100% commune
- Vittefleur8.19 km²97% commune
- Bosville8.09 km²100% commune
- Veauville-lès-Baons7.76 km²100% commune
- Ouville-l'Abbaye7.54 km²100% commune
- Harcanville7.50 km²100% commune
- Cliponville7.34 km²100% commune
- Yerville6.92 km²68% commune
- Berville6.61 km²100% commune
- Envronville6.23 km²100% commune
- Hautot-le-Vatois6.17 km²100% commune
- Yvecrique5.98 km²100% commune
- Criquetot-sur-Ouville5.98 km²100% commune
- Bermonville5.59 km²73% commune
- Baons-le-Comte5.58 km²100% commune
- Paluel5.37 km²48% commune
- Carville-Pot-de-Fer5.30 km²100% commune
- Rocquefort4.97 km²100% commune
- Amfreville-les-Champs4.81 km²100% commune
- Sasseville4.73 km²73% commune
- Anvéville4.63 km²100% commune
- Ocqueville4.57 km²50% commune
- Boudeville4.53 km²99% commune
- Oherville4.47 km²100% commune
- Ectot-lès-Baons4.31 km²92% commune
- Prétot-Vicquemare4.27 km²93% commune
- Routes4.27 km²100% commune
- Le Hanouard4.16 km²100% commune
- Cleuville3.81 km²83% commune
- Hautot-l'Auvray3.74 km²53% commune
- Autretot3.65 km²100% commune
- Motteville3.56 km²42% commune
- Flamanville3.51 km²78% commune
- Étalleville3.50 km²100% commune
- Ouainville3.49 km²49% commune
- Ancourteville-sur-Héricourt3.21 km²100% commune
- Clasville3.09 km²100% commune
- Sommesnil3.04 km²100% commune
- Veauville-lès-Quelles3.00 km²100% commune
- Bénesville2.73 km²50% commune
- Gerponville2.47 km²52% commune
- Bertheauville2.33 km²100% commune
- Robertot2.27 km²100% commune
- Fultot2.13 km²57% commune
- Alvimare2.02 km²31% commune
- Lindebeuf1.88 km²40% commune
- Saint-Riquier-ès-Plains1.84 km²30% commune
- Vibeuf1.58 km²18% commune
- Saint-Pierre-Lavis1.57 km²33% commune
- Canouville1.55 km²32% commune
- Thiouville1.43 km²24% commune
- Gonzeville1.36 km²28% commune
- Reuville1.36 km²31% commune
- Beuzeville-la-Guérard1.35 km²21% commune
- Malleville-les-Grès1.22 km²42% commune
- Bertreville1.00 km²31% commune
- Saint-Laurent-en-Caux0.88 km²13% commune
- Sainte-Marie-des-Champs0.82 km²20% commune
- Le Torp-Mesnil0.82 km²15% commune
- Écalles-Alix0.71 km²10% commune
- Yvetot0.58 km²8% commune
- Veulettes-sur-Mer0.55 km²11% commune
- Riville0.48 km²6% commune
- Cléville0.17 km²3% commune
- Bois-Himont0.11 km²2% commune
- Saint-Martin-aux-Arbres0.03 km²1% commune
5 intersecting protected areas
Regional Nature Park
10.51 km² overlap
Vallee de la durdent
IUCN IVLand acquired by Conservatoire du Littoral (national seaside and lakeside conservancy)
0.19 km² overlap
Littoral Cauchois
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.08 km² overlap
Bois de la Roquette
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.04 km² overlap
Littoral seino-marin
IUCN Not ReportedSpecial Protection Area (Birds Directive)
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 725 distinct species · 40 406 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Durdent : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 115 interactions GloBI sur 6 types (connectance 23.2%, filtre Serrano α=0.2). 10 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°
10,1°C
Annual rain
724mm
Moisture idx (CMI)
-0,04
Runoff
632mm/an
PET
755mm
AET
544mm
Mean slope
1,9°
Water table
87cm
Forest
0%
Crops
51%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)