Ontologia

HydroBASINS lev08 watershed · #2080459800

Bassin de la Marne

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 7 administrative regions : Essonne, Oise, Paris, Seine-Saint-Denis, Seine-et-Marne +2

7% lakePfafstetter: 23240701

Sub-basin area

644,4km²

Upstream area

12 783,1km²

Discharge

96,19m³/s

Mean elev.

83m

Administrative coverage

Hydrographic chain

Drains into

Receives from 2 basins

7 dept-equivalent regions (GADM L2)

128 communes (GADM L5)

14 intersecting protected areas

5 more protected areas

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

Species present

11 361 distinct species · 1 956 228 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 956 228 obs · 34 cellules
Obs. / cellule
≥ 202 711
116 730–202 710
80 263–116 729
48 412–80 262
< 48 412

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~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°

10,9°C

Annual rain

648mm

Moisture idx (CMI)

-0,22

Runoff

202mm/an

PET

830mm

AET

546mm

Mean slope

1,4°

Water table

126cm

Forest

4%

Crops

32%

Urban

65%

Protected

1%

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