HydroBASINS lev08 watershed · #4080632020
Bassin de Surkhab
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 11 administrative regions : Azro, Hisarak, Jaji, Khaki Jabar, Khogyani +6
Sub-basin area
2 647,2km²
Upstream area
2 647,6km²
Discharge
8,85m³/s
Mean elev.
2 319m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
11 dept-equivalent regions (GADM L2)
- 718.5 km²27.1% of basin
- 670.9 km²25.4% of basin
- 542.5 km²20.5% of basin
- 405.2 km²15.3% of basin
- 229.7 km²8.7% of basin
- 58.0 km²2.2% of basin
- 8.0 km²0.3% of basin
- 7.8 km²0.3% of basin
3 moreFull L2 list
- Pachir Wa Agam3.0 km² · 0.1%
- Qarghayi2.4 km² · 0.1%
- Khaki Jabar0.6 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
201 distinct species · 294 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Surkhab : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 4 types (connectance 8.9%, filtre Serrano α=0.2). 5 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°
10,0°C
Annual rain
643mm
Moisture idx (CMI)
-0,35
Runoff
101mm/an
PET
1 078mm
AET
497mm
Mean slope
16,2°
Water table
649cm
Forest
14%
Crops
25%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)