Haute Vallée De Chevreuse
IUCN VRegional Nature Park · 1985
659 km²
Commune · FRA
Trappes
France
CfbTemperate, no dry season, warm summer(100 %)
Species observed
2 436
Observations
67 785
Area
13,8km²
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
2 436 distinct species · 67 785 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
10,7°C
Annual rain
721mm
Warmest m°
22,8°C
Coldest m°
0,8°C
Elevation: 167 m on average (min 162 m, max 170 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
10,7°C
Annual rain
721mm
Warmest month
22,8°C
Coldest month
0,8°C
Mean alt.
167m
Min
162m
Max
170m
Std. dev.
2m
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
6,6
Org. C
29,8g/kg
Clay
32,8%
Sand
27,8%
Silt
39,4%
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
6,4
Org. C
52,1g/kg
Clay
31,0%
Sand
28,8%
Silt
40,2%
5–15 cm
pH H₂O
6,8
Org. C
24,1g/kg
Clay
33,1%
Sand
27,2%
Silt
39,6%
15–30 cm
pH H₂O
6,7
Org. C
13,1g/kg
Clay
34,4%
Sand
27,3%
Silt
38,3%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest16.9%
Crops16.0%
Built-up9.4%
Bare soil0.3%
Other (grassland, water…)57.3%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology3 basins · 1 lakes · 0 rivers
Hydrology metrics for this exact territory
Lake surface here
0,59km²
Basins crossed
3
Max drainage
44 526km²
Discharge in basins
2,2m³/s
Mean precip.
643mm/an
Mean T°
10,7°C
Moisture idx
-0,21
Max snow
6%
Mean runoff
201mm/an
Mean elev. (basins)
104m
Watersheds crossing here
Lakes (1, top by area)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
11hab/km²
Night light
16,1nW
Built-up
945,0%
Pesticides
45,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas4
IUCN Not Reported · 2IUCN V · 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
Etang de Saint Quentin
IUCN Not ReportedSpecial Protection Area (Birds Directive) · 2003
1 km²
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.