HydroBASINS lev08 watershed · #2080736820
Bassin de سیروان
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 2 administrative regions : Marivan, Paveh
Sub-basin area
186,7km²
Upstream area
3 374,4km²
Discharge
42,62m³/s
Mean elev.
1 680m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de گاران1219 km²
- Bassin de رودخانه دوپردان327 km²
2 dept-equivalent regions (GADM L2)
- 186.1 km²99.7% of basin
- 0.6 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
102 distinct species · 646 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 سیروان : 12 espèces reliées par 32 interactions GloBI sur 2 types (connectance 26.7%, 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°
12,1°C
Annual rain
703mm
Moisture idx (CMI)
-0,46
Runoff
445mm/an
PET
1 309mm
AET
570mm
Mean slope
26,8°
Water table
948cm
Forest
18%
Crops
65%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)