Ontologia

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

Pfafstetter: 81220199

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

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Kanuti

    IUCN IV

    National 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.

Densité d'observations

26 obs · 3 cellules
Obs. / cellule
≥ 19
19–18
19–18
5–18
< 5

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

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)