Regional Nature Park · fra
Boucles De La Seine Normande
- Area
- 905 km²
- IUCN cat.
- V
- Year
- 1974
Overview
- Designation
- Regional Nature Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1974
- Managing authority
- French Ministry in charge of the environment. In march 2012, name, acronym and address as follows : Ministère de l'Écologie, du Développement durable, des Transports et du Logement (MEDDTL) 92055 La Défense Cedex France. For regional parks network,
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
8 176 distinct species · 565 714 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Boucles De La Seine Normande : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 120 interactions GloBI sur 6 types (connectance 18.0%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology9 basins · 15 lakes · 16 rivers
Hydrology metrics for this exact territory
Stream length here
210,6km
Lake surface here
5,06km²
Basins crossed
9
Max stream order
6
Max drainage
73 249km²
Discharge in basins
174,2m³/s
Mean precip.
697mm/an
Mean T°
10,3°C
Moisture idx
-0,10
Max snow
9%
Mean runoff
570mm/an
Mean elev. (basins)
100m
Watersheds crossing here
- Bassin de la Seinesub-area1 953,2 km²overlap598.46 km²66%
- Bassin de la Rislesub-area2 301,8 km²overlap124.40 km²14%
- Bassin de Canal Saint-Aubinsub-area73,9 km²overlap74.12 km²8%
- Bassin de la Brouisseressesub-area101,6 km²overlap62.39 km²7%
- Bassin de la Lézardesub-area317,4 km²overlap16.63 km²2%
- Bassin de Canal de Retoursub-area40 km²overlap16.18 km²2%
- Bassin de la Durdentsub-area364,6 km²overlap10.51 km²1%
- Bassin de la Morellesub-area111,3 km²overlap1.01 km²0%
- Bassin de la Valmontsub-area616,2 km²overlap0.24 km²0%
Lakes (15, top by area)
- Darse de l'Océanarea4,7 km²avg depth2.1 m
- Lac 1341308area0,7 km²avg depth2.9 m
- Lac 1341176area0,6 km²avg depth2.2 m
- Lac 1341543area0,5 km²avg depth2.7 m
- Lac 1341329area0,4 km²avg depth3.0 m
- Lac 1341002area0,4 km²avg depth2.2 m
- Lac 1341211area0,4 km²avg depth2.3 m
- Lac 1341218area0,3 km²avg depth2.4 m
- Lac 1341118area0,3 km²avg depth3.4 m
Rivers / streams (16, ord ≥ 4)
- La Seineord 6len here94.03 km12%total797 km
- La Risleord 4len here34.68 km17%total206 km
- Le Theluetord 6len here30.42 km98%total31 km
- La Corbieord 4len here8.78 km64%total14 km
- Canal Saint-Aubinord 1len here7.10 km100%total7 km
- L'Austrebertheord 3len here6.76 km26%total26 km
- L'Ambionord 2len here6.22 km100%total6 km
- Canal de Retourord 1len here6.04 km58%total10 km
- La Brouisseresseord 2len here4.55 km100%total5 km
- La Rançonord 2len here4.27 km48%total9 km
- La Véronneord 4len here3.07 km24%total13 km
- La Fontenelleord 1len here2.67 km44%total6 km
4 more river segmentssorted by Strahler order + length
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 49.47648, 0.77853
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.