HydroBASINS lev08 watershed · #2080003490
Bassin de Kocaçay
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 5 administrative regions : Derince, Gebze, Körfez, Merkez, Şile
Sub-basin area
481,3km²
Upstream area
481,4km²
Discharge
5,11m³/s
Mean elev.
270m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 255.3 km²53.0% of basin
- 77.2 km²16.0% of basin
- 65.7 km²13.6% of basin
- 59.0 km²12.2% of basin
- 24.6 km²5.1% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
195 distinct species · 918 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Kocaçay : 20 espèces reliées par 86 interactions GloBI sur 6 types (connectance 13.7%, filtre Serrano α=0.2). 16 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°
13,1°C
Annual rain
810mm
Moisture idx (CMI)
-0,14
Runoff
347mm/an
PET
939mm
AET
607mm
Mean slope
7,6°
Water table
365cm
Forest
27%
Crops
15%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)