HydroBASINS lev08 watershed · #8080179200
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
192,9km²
Upstream area
78 415,9km²
Discharge
723,83m³/s
Mean elev.
89m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Gisasa River1281 km²
- Bassin de Koyukuk River310 km²
1 dept-equivalent regions (GADM L2)
- 194.1 km²100.0% of basin
1 intersecting protected areas
Koyukuk
IUCN IVNational Wildlife Refuge
176.76 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 distinct species · 4 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°
-5,2°C
Annual rain
330mm
Moisture idx (CMI)
-0,21
Runoff
607mm/an
PET
416mm
AET
282mm
Mean slope
5,1°
Water table
87cm
Forest
62%
Crops
0%
Urban
0%
Protected
90%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)