HydroBASINS lev08 watershed · #7080317550
Bassin de Skagit 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 : Skagit
Sub-basin area
123,7km²
Upstream area
6 317,6km²
Discharge
261,58m³/s
Mean elev.
649m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Suiattle River1890 km²
- Bassin de Skagit River258 km²
1 dept-equivalent regions (GADM L2)
- 124.1 km²100.0% of basin
6 intersecting protected areas
Skagit, Washington
IUCN VWild and Scenic River
9.45 km² overlap
Skagit-Snoqualmie
IUCN VWildlife Area Complex
2.57 km² overlap
Mcleod
IUCN VConservation Land
0.50 km² overlap
Noisy-Diobsud
IUCN IbWilderness
0.16 km² overlap
Skagit County - Alea
IUCN VConservation Land
0.11 km² overlap
Skagit/Sauk River
IUCN VPrivate Conservation Land
0.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
720 distinct species · 10 229 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Skagit River : 24 espèces reliées par 94 interactions GloBI sur 5 types (connectance 12.7%, filtre Serrano α=0.2). 15 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°
7,0°C
Annual rain
1 879mm
Moisture idx (CMI)
0,60
Runoff
1 482mm/an
PET
750mm
AET
608mm
Mean slope
17,4°
Water table
625cm
Forest
100%
Crops
2%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)