Ontologia

HydroBASINS lev08 watershed · #2080485810

Bassin de l'Erve

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 : Mayenne, Sarthe

Pfafstetter: 23222042

Sub-basin area

420,9km²

Upstream area

420,9km²

Discharge

3,27m³/s

Mean elev.

113m

Administrative coverage

Computing spatial overlaps (territories, protected areas)…

Species present

Computing species observations from GBIF…

Densité d'observations

0 obs · 0 cellules

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Graphe en cours d’indexation

Calcul du tissu écologique de cette entité.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).

Hydroclimate (BasinATLAS lev08)

Mean T°

10,7°C

Annual rain

734mm

Moisture idx (CMI)

-0,12

Runoff

258mm/an

PET

835mm

AET

574mm

Mean slope

2,3°

Water table

178cm

Forest

2%

Crops

51%

Urban

0%

Protected

5%

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