HydroBASINS lev08 watershed · #8080144940
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
367,3km²
Upstream area
43 159,4km²
Discharge
343,23m³/s
Mean elev.
204m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Alatna River650 km²
- Bassin de Koyukuk River10 km²
1 dept-equivalent regions (GADM L2)
- 369.8 km²100.0% of basin
1 intersecting protected areas
Kanuti
IUCN IVNational Wildlife Refuge
30.71 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
21 distinct species · 26 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
-7,6°C
Annual rain
346mm
Moisture idx (CMI)
-0,31
Runoff
331mm/an
PET
505mm
AET
300mm
Mean slope
3,7°
Water table
87cm
Forest
30%
Crops
0%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)