HydroBASINS lev08 watershed · #8080131060
Bassin de North Fork 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
688,2km²
Upstream area
4 698,4km²
Discharge
45,94m³/s
Mean elev.
567m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
1 dept-equivalent regions (GADM L2)
- 693.0 km²100.0% of basin
2 intersecting protected areas
Gates of the Arctic
IUCN IbWilderness Area
677.00 km² overlap
Gates of the Arctic
IUCN VNational Preserve
623.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
24 distinct species · 53 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de North Fork Koyukuk River : 21 espèces reliées par 19 interactions GloBI sur 3 types (connectance 9.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
-8,1°C
Annual rain
304mm
Moisture idx (CMI)
-0,31
Runoff
343mm/an
PET
442mm
AET
269mm
Mean slope
12,7°
Water table
261cm
Forest
5%
Crops
0%
Urban
0%
Protected
91%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)