Ontologia

HydroBASINS lev08 watershed · #2080446290

Bassin de l'Andelle

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 2 administrative regions : Eure, Seine-Maritime

Pfafstetter: 23240302

Sub-basin area

730km²

Upstream area

730,1km²

Discharge

11,13m³/s

Mean elev.

145m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de la Seine22 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

2 dept-equivalent regions (GADM L2)

105 communes (GADM L5)

10 intersecting protected areas

1 more protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

4 680 distinct species · 138 653 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

138 653 obs · 24 cellules
Obs. / cellule
≥ 12 605
11 185–12 604
6 803–11 184
5 637–6 802
< 5 637

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de l'Andelle : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 6 types (connectance 28.1%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
114
Connectance
0.281
Patrimoniales
1
Plus dense que (national)0 %(top 100%)

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

693mm

Moisture idx (CMI)

-0,11

Runoff

476mm/an

PET

777mm

AET

548mm

Mean slope

2,9°

Water table

162cm

Forest

2%

Crops

44%

Urban

2%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)