Regional Nature Park · fra
Baie de Somme Picardie maritime
- Area
- 1 361 km²
- IUCN cat.
- V
- Year
- 2020
Overview
- Designation
- Regional Nature Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 2020
- 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
6 972 distinct species · 720 134 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Baie de Somme Picardie maritime : 26 espèces reliées par 83 interactions GloBI sur 4 types (connectance 13.2%, 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).
Hydrology7 basins · 16 lakes · 31 rivers
Hydrology metrics for this exact territory
Stream length here
305,0km
Lake surface here
4,85km²
Basins crossed
7
Max stream order
5
Max drainage
6 195km²
Discharge in basins
67,5m³/s
Mean precip.
654mm/an
Mean T°
10,3°C
Moisture idx
-0,09
Max snow
8%
Mean runoff
559mm/an
Mean elev. (basins)
66m
Watersheds crossing here
- Bassin de la Somme Canaliséesub-area1 046,1 km²overlap736.11 km²54%
- Bassin de la Mayesub-area324,9 km²overlap311.48 km²23%
- Bassin de l'Authiesub-area1 103,2 km²overlap223.36 km²16%
- Bassin de Canal de Lanchèressub-area92,9 km²overlap79.95 km²6%
- Bassin de la Breslesub-area754,7 km²overlap10.24 km²1%
- Bassin de Nièvresub-area265,2 km²overlap0.00 km²0%
- Bassin de la Somme Canaliséesub-area404 km²overlap0.00 km²0%
Lakes (16, top by area)
- Lac 1338554area0,7 km²avg depth2.5 m
- Lac 1337754area0,6 km²avg depth2.2 m
- Lac 1337875area0,5 km²avg depth1.6 m
- Lac 1338620area0,4 km²avg depth2.1 m
- Lac 1337712area0,4 km²avg depth1.8 m
- Lac 1337330area0,3 km²avg depth1.2 m
- Lac 1338597area0,3 km²avg depth1.6 m
- Lac 1338150area0,2 km²avg depth1.6 m
- Lac 1338539area0,2 km²avg depth2.1 m
Rivers / streams (31, ord ≥ 4)
- L'Authieord 3len here37.75 km26%total145 km
- Le Scardonord 3len here31.56 km100%total32 km
- La Somme Canaliséeord 5len here30.70 km24%total126 km
- La Mayeord 2len here29.64 km100%total30 km
- La Trieord 2len here25.08 km100%total25 km
- La Drucatord 3len here17.22 km100%total17 km
- Rivière de Bellifontaineord 5len here15.54 km100%total16 km
- Canal d'Assèchementord 5len here11.86 km100%total12 km
- L'Avalasseord 2len here10.60 km100%total11 km
- L'Amboiseord 3len here9.76 km100%total10 km
- Rivière des Ilesord 2len here9.15 km91%total10 km
- Course du Nac Ariareord 1len here9.13 km93%total10 km
19 more river segmentssorted by Strahler order + length
- Le Dienord 1len here7.46 km100%total7 km
- La Ferlanceord 5len here7.32 km100%total7 km
- Canal de la Mayeord 2len here7.10 km96%total7 km
- Canal des Masuresord 1len here6.91 km98%total7 km
- Canal de Lanchèresord 1len here6.45 km100%total6 km
- La Maillefeuord 1len here5.58 km100%total6 km
- Rivière du Genoiveord 5len here4.61 km100%total5 km
- Contre Canalord 1len here3.96 km100%total4 km
- Rivière de Neuvilleord 1len here3.88 km100%total4 km
- L'Eauetteord 5len here2.60 km100%total3 km
- L'Airainesord 3len here2.32 km32%total7 km
- Ruisseau de Becquerelleord 1len here1.93 km100%total2 km
- Canal de Déssechementord 1len here1.84 km100%total2 km
- Course du Montmignonord 1len here1.38 km100%total1 km
- La Mayeord 1len here1.31 km71%total2 km
- Canal de Cayeuxord 1len here0.83 km101%total1 km
- Courant à Poissonsord 2len here0.81 km58%total1 km
- L'Authieord 1len here0.76 km43%total2 km
- La Busineord 4len here0.04 km1%total6 km
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
- 50.16588, 1.77396
- 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.