HydroBASINS lev08 watershed · #8080000410
Bassin de Yahtse 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 3 administrative regions across 2 countries : Skagway-Yakutat-Angoon, Valdez-Cordova, Yukon
Sub-basin area
1 725,6km²
Upstream area
1 725,6km²
Discharge
20,07m³/s
Mean elev.
402m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 1409.8 km²81.2% of basin
- 272.3 km²15.7% of basin
- 35.3 km²2.0% of basin
7 intersecting protected areas
Kluane / Wrangell-St Elias / Glacier Bay / Tatshenshini-Alsek
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1513.76 km² overlap
Wrangell-Saint Elias
IUCN IbWilderness Area
1356.53 km² overlap
Wrangell-St. Elias
IUCN IINational Park
1355.12 km² overlap
Wrangell-St. Elias
IUCN VNational Preserve
81.31 km² overlap
National Park
36.48 km² overlap
Marine Protected Area
0.05 km² overlap
Alaska Maritime
IUCN IVNational Wildlife Refuge
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
220 distinct species · 745 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Yahtse River : 27 espèces reliées par 71 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 16 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
1,5°C
Annual rain
2 386mm
Moisture idx (CMI)
0,81
Runoff
3 593mm/an
PET
445mm
AET
445mm
Mean slope
5,4°
Water table
69cm
Forest
8%
Crops
0%
Urban
0%
Protected
87%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)