HydroBASINS lev08 watershed · #2080639630
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 : Bozüyük, Gölpazarı, Merkez, Söğüt, İnhisar
Sub-basin area
491,3km²
Upstream area
52 116,7km²
Discharge
166,79m³/s
Mean elev.
632m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sakarya Nehri846 km²
- Bassin de Kocaçay473 km²
6 dept-equivalent regions (GADM L2)
- 400.8 km²81.5% of basin
- 45.4 km²9.2% of basin
- 37.3 km²7.6% of basin
- 6.8 km²1.4% of basin
- 1.1 km²0.2% of basin
- 0.5 km²0.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
166 distinct species · 277 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 5 types (connectance 8.8%, 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°
11,6°C
Annual rain
493mm
Moisture idx (CMI)
-0,53
Runoff
173mm/an
PET
1 044mm
AET
420mm
Mean slope
10,7°
Water table
694cm
Forest
3%
Crops
13%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)