HydroBASINS lev08 watershed · #2080642630
Bassin de Nallı Çayı
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 : Göynük, Mudurnu, Nallıhan, Seben
Sub-basin area
816,6km²
Upstream area
816,8km²
Discharge
4,77m³/s
Mean elev.
1 064m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 615.3 km²75.3% of basin
- 192.5 km²23.5% of basin
- 8.4 km²1.0% of basin
- 1.4 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
228 distinct species · 751 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Nallı Çayı : 23 espèces reliées par 76 interactions GloBI sur 5 types (connectance 11.4%, filtre Serrano α=0.2). 14 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
552mm
Moisture idx (CMI)
-0,43
Runoff
185mm/an
PET
972mm
AET
470mm
Mean slope
12,3°
Water table
638cm
Forest
42%
Crops
17%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)