Chréa
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve · 2002
412 km²
Commune · DZA
Boumedfaa
Algeria
CsaTemperate, dry summer, hot summer(100 %)
Species observed
19
Observations
44
Area
129,1km²
Partial data for this territory
Few observations recorded here. Real biodiversity is likely richer.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Species present
19 distinct species · 44 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
16,9°C
Annual rain
593mm
Warmest m°
32,2°C
Coldest m°
4,3°C
Elevation: 412 m on average (min 255 m, max 736 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
16,9°C
Annual rain
593mm
Warmest month
32,2°C
Coldest month
4,3°C
Mean alt.
412m
Min
255m
Max
736m
Std. dev.
119m
Köppen-Geiger (dominant)
CsaTemperate, dry summer, hot summer(100 %)Temperate
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,8
Org. C
23,8g/kg
Clay
34,6%
Sand
29,6%
Silt
35,8%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,7
Org. C
39,2g/kg
Clay
34,9%
Sand
29,2%
Silt
36,0%
5–15 cm
pH H₂O
6,8
Org. C
18,2g/kg
Clay
35,2%
Sand
29,0%
Silt
35,8%
15–30 cm
pH H₂O
6,8
Org. C
14,0g/kg
Clay
33,8%
Sand
30,7%
Silt
35,6%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest10.0%
Crops33.8%
Built-up0.7%
Bare soil5.4%
Other (grassland, water…)50.2%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology2 basins · 1 lakes · 4 rivers
Hydrology metrics for this exact territory
Stream length here
24,5km
Lake surface here
1,64km²
Basins crossed
2
Max stream order
3
Max drainage
23 729km²
Discharge in basins
0,7m³/s
Mean precip.
710mm/an
Mean T°
16,9°C
Moisture idx
-0,34
Max snow
1%
Mean runoff
167mm/an
Mean elev. (basins)
390m
Watersheds crossing here
Lakes (1, top by area)
Rivers / streams (4, ord ≥ 4)
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
1hab/km²
Night light
1,7nW
Built-up
65,5%
Pesticides
20,1kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas1
IUCN Not Applicable · 1
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN