Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Subdivision · FRA
Maurepas
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
3 907
Observations
263 661
Area
27,5km²
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
3 907 distinct species · 263 661 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
689mm
Warmest m°
22,8°C
Coldest m°
0,8°C
Elevation: 161 m on average (min 93 m, max 172 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
689mm
Warmest month
22,8°C
Coldest month
0,8°C
Mean alt.
161m
Min
93m
Max
172m
Std. dev.
13m
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
27,9g/kg
Clay
31,7%
Sand
27,3%
Silt
41,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: scGLiMaggregated to Yvelines
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,5
Org. C
49,0g/kg
Clay
30,0%
Sand
28,2%
Silt
41,8%
5–15 cm
pH H₂O
6,9
Org. C
21,1g/kg
Clay
31,6%
Sand
26,7%
Silt
41,5%
15–30 cm
pH H₂O
6,8
Org. C
13,5g/kg
Clay
33,4%
Sand
27,1%
Silt
39,5%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest16.9%
Crops20.7%
Built-up9.3%
Bare soil0.2%
Other (grassland, water…)53.0%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 1 rivers
Hydrology metrics for this exact territory
Stream length here
0,1km
Lake surface here
0,00km²
Basins crossed
2
Max stream order
1
Max drainage
30 655km²
Discharge in basins
0,8m³/s
Mean precip.
640mm/an
Mean T°
10,5°C
Moisture idx
-0,20
Max snow
6%
Mean runoff
201mm/an
Mean elev. (basins)
124m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (1, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
11hab/km²
Night light
10,7nW
Built-up
926,0%
Pesticides
46,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas3
IUCN V · 1IUCN Not Reported · 1IUCN IV · 1
Massif de Rambouillet et zones humides proches
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2006
171 km²
Etangs et rigoles d’Yveline
IUCN IVNational Nature Reserve · 2021
3 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN
Sub-administrations3
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.