HydroBASINS lev08 watershed · #2080703690
Bassin de سفیدرود - قزل اوزن
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 3 administrative regions : Khalkhal, Mianeh, Zanjan
Sub-basin area
1 264,4km²
Upstream area
45 715,7km²
Discharge
187,26m³/s
Mean elev.
1 530m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de هیرو چایی1840 km²
- Bassin de قزل اوزن744 km²
3 dept-equivalent regions (GADM L2)
- 723.7 km²57.2% of basin
- 419.0 km²33.1% of basin
- 122.3 km²9.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
79 distinct species · 121 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 de سفیدرود - قزل اوزن : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 10.7%, filtre Serrano α=0.2). 4 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°
11,1°C
Annual rain
399mm
Moisture idx (CMI)
-0,66
Runoff
140mm/an
PET
1 159mm
AET
341mm
Mean slope
14,1°
Water table
654cm
Forest
0%
Crops
17%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)