HydroBASINS lev08 watershed · #2080706570
Bassin de Tejen
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 across 2 countries : Kaka, Sarahs, Sarakhs, Tejen
Sub-basin area
980,4km²
Upstream area
73 753km²
Discharge
164,48m³/s
Mean elev.
260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tejen1020 km²
- Bassin de Tejen80 km²
4 dept-equivalent regions (GADM L2)
- 389.8 km²39.7% of basin
- 368.7 km²37.6% of basin
- 215.2 km²21.9% of basin
- 7.1 km²0.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
226 distinct species · 2 125 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Tejen : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 63 interactions GloBI sur 3 types (connectance 13.5%, filtre Serrano α=0.2). 9 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°
14,8°C
Annual rain
189mm
Moisture idx (CMI)
-0,86
Runoff
11mm/an
PET
1 373mm
AET
162mm
Mean slope
0,1°
Water table
54cm
Forest
0%
Crops
11%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)