HydroBASINS lev08 watershed · #7080016090
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
1 115,2km²
Upstream area
8 183km²
Discharge
334,29m³/s
Mean elev.
378m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Baker River751 km²
- Bassin de Skagit River124 km²
1 dept-equivalent regions (GADM L2)
- 1118.5 km²100.0% of basin
20 intersecting protected areas
Skagit, Washington
IUCN VWild and Scenic River
44.92 km² overlap
Skagit Land Trust
IUCN VLocal Land Trust
5.42 km² overlap
Skagit-Snoqualmie
IUCN VWildlife Area Complex
2.49 km² overlap
Skagit Environmental Bank
IUCN Not AssignedConservation Easement
1.57 km² overlap
Reserve Program
1.46 km² overlap
Nookachamps Wetlands
IUCN Not AssignedMitigation Bank
1.26 km² overlap
Iron Mountain Ranch
IUCN VConservation Land
1.10 km² overlap
Anderson Creek
IUCN VConservation Land
0.53 km² overlap
Martinez
IUCN VEnvironmental System
0.20 km² overlap
11 more protected areassorted by overlap area
Cumberland Creek
IUCN VConservation Land
0.17 km² overlap
Environmental System
0.14 km² overlap
Bergquist 2008
IUCN VEnvironmental System
0.13 km² overlap
Mill Creek
IUCN VConservation Land
0.11 km² overlap
Reserve Program
0.10 km² overlap
PCON108
IUCN VLocal Land Trust
0.09 km² overlap
Watershed Protection
0.06 km² overlap
O' Toole Creek
IUCN VConservation Land
0.06 km² overlap
Gilligan Creek
IUCN VConservation Land
0.06 km² overlap
Greater Skagit Delta
IUCN VPrivate Conservation Land
0.05 km² overlap
Reserve Program
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 166 distinct species · 433 672 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 : 14 espèces reliées par 75 interactions GloBI sur 3 types (connectance 19.8%, filtre Serrano α=0.2). 14 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°
8,4°C
Annual rain
1 495mm
Moisture idx (CMI)
0,44
Runoff
1 121mm/an
PET
770mm
AET
609mm
Mean slope
10,7°
Water table
376cm
Forest
81%
Crops
20%
Urban
5%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)