HydroBASINS lev08 watershed · #2080625860
Bassin de Sakarya Nehri
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 6 administrative regions : Geyve, Merkez, Pamukova, Sapanca, Söğütlü
Sub-basin area
510km²
Upstream area
58 748km²
Discharge
203,64m³/s
Mean elev.
311m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sakarya Nehri528 km²
- Bassin de Karaçay203 km²
6 dept-equivalent regions (GADM L2)
- 178.5 km²35.0% of basin
- 157.2 km²30.8% of basin
- 81.5 km²16.0% of basin
- 66.6 km²13.0% of basin
- 26.2 km²5.1% of basin
- 0.6 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
443 distinct species · 3 139 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Sakarya Nehri : 23 espèces reliées par 71 interactions GloBI sur 4 types (connectance 13.4%, filtre Serrano α=0.2). 10 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°
12,9°C
Annual rain
744mm
Moisture idx (CMI)
-0,26
Runoff
330mm/an
PET
1 010mm
AET
611mm
Mean slope
9,0°
Water table
312cm
Forest
49%
Crops
34%
Urban
26%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)