HydroBASINS lev08 watershed · #8080162920
Bassin de Koyukuk River
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 1 administrative regions : Yukon-Koyukuk
Sub-basin area
0,4km²
Upstream area
63 887,8km²
Discharge
523,73m³/s
Mean elev.
41m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Nulitna River642 km²
- Bassin de Koyukuk River300 km²
1 dept-equivalent regions (GADM L2)
- 0.4 km²100.0% of basin
1 intersecting protected areas
Koyukuk
IUCN IVNational Wildlife Refuge
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydroclimate (BasinATLAS lev08)
Mean T°
-5,9°C
Annual rain
332mm
Moisture idx (CMI)
-0,22
Runoff
436mm/an
PET
427mm
AET
285mm
Mean slope
6,6°
Water table
0cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)