Ontologia

HydroBASINS lev08 watershed · #8080160780

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

10% lakePfafstetter: 81220193

Sub-basin area

27,9km²

Upstream area

48 727,1km²

Discharge

401,49m³/s

Mean elev.

143m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Koyukuk River1178 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Koyukuk

    IUCN IV

    National Wildlife Refuge

    23.94 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.

Densité d'observations

0 obs · 0 cellules

Aucune observation géoréférencée précise (<10 km) dans ce territoire.

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~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°

-6,5°C

Annual rain

399mm

Moisture idx (CMI)

-0,14

Runoff

476mm/an

PET

463mm

AET

328mm

Mean slope

7,5°

Water table

36cm

Forest

61%

Crops

0%

Urban

0%

Protected

87%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)