HydroBASINS lev08 watershed · #2080727090
Bassin · #2080727090
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 4 administrative regions : Karaj, Nazarabad, Qazvin, Savojbolagh
Sub-basin area
267,7km²
Upstream area
15 614km²
Discharge
54,83m³/s
Mean elev.
1 321m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 3 basins
- Bassin de قنات973 km²
- Bassin de کانال آبرسانی دشت قزوین937 km²
- Bassin de قنات907 km²
4 dept-equivalent regions (GADM L2)
- 147.3 km²55.0% of basin
- 99.9 km²37.3% of basin
- 20.5 km²7.7% of basin
- 0.0 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
94 distinct species · 262 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin · #2080727090 : 21 espèces reliées par 51 interactions GloBI sur 3 types (connectance 13.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
14,1°C
Annual rain
282mm
Moisture idx (CMI)
-0,79
Runoff
145mm/an
PET
1 329mm
AET
241mm
Mean slope
2,1°
Water table
261cm
Forest
0%
Crops
31%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)