Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Commune · FRA
Dourdan
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 016
Observations
103 366
Area
31,3km²
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).
Species present
3 016 distinct species · 103 366 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,9°C
Annual rain
663mm
Warmest m°
23,4°C
Coldest m°
0,9°C
Elevation: 137 m on average (min 107 m, max 158 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,9°C
Annual rain
663mm
Warmest month
23,4°C
Coldest month
0,9°C
Mean alt.
137m
Min
107m
Max
158m
Std. dev.
16m
Köppen-Geiger (dominant)
CfbTemperate, no dry season, warm summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,7
Org. C
24,8g/kg
Clay
26,4%
Sand
23,2%
Silt
50,4%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: suGLiMaggregated to Essonne
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,5
Org. C
42,5g/kg
Clay
24,2%
Sand
24,2%
Silt
51,6%
5–15 cm
pH H₂O
6,8
Org. C
18,4g/kg
Clay
26,3%
Sand
23,0%
Silt
50,7%
15–30 cm
pH H₂O
6,7
Org. C
13,4g/kg
Clay
28,8%
Sand
22,5%
Silt
48,7%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest39.0%
Crops37.6%
Built-up1.9%
Bare soil0.2%
Other (grassland, water…)21.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology1 basins · 0 lakes · 2 rivers
Hydrology metrics for this exact territory
Stream length here
6,6km
Basins crossed
1
Max stream order
2
Max drainage
30 655km²
Discharge in basins
3,1m³/s
Mean precip.
645mm/an
Mean T°
10,7°C
Moisture idx
-0,21
Max snow
5%
Mean runoff
196mm/an
Mean elev. (basins)
117m
Watersheds crossing here
Rivers / streams (2, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
2hab/km²
Night light
4,5nW
Built-up
185,6%
Pesticides
43,2kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN V · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
France-specific data (Phase 2)
ZNIEFF, Natura 2000, INPN protected spaces, BNV-D pesticides, Naïades water quality, SAFRAN fine climate, BRGM lithology — Layer FR to load in Phase 2.