HydroBASINS lev08 watershed · #7080319210
Bassin de Suiattle 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 : Chelan, Skagit, Snohomish
Sub-basin area
1 890km²
Upstream area
1 890,1km²
Discharge
100,89m³/s
Mean elev.
1 143m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 1440.2 km²76.0% of basin
- 451.7 km²23.8% of basin
- 3.8 km²0.2% of basin
21 intersecting protected areas
Glacier Peak
IUCN IbWilderness
878.46 km² overlap
Henry M. Jackson
IUCN IbWilderness
113.90 km² overlap
Skagit, Washington
IUCN VWild and Scenic River
99.74 km² overlap
Boulder River
IUCN IbWilderness
31.89 km² overlap
Skagit/Sauk River
IUCN VPrivate Conservation Land
2.98 km² overlap
Morning Star
IUCN VNatural Resources Conservation Area
2.42 km² overlap
Skagit-Snoqualmie
IUCN VWildlife Area Complex
1.56 km² overlap
Everett Creek
IUCN VConservation Land
0.61 km² overlap
Conservation Land
0.58 km² overlap
12 more protected areassorted by overlap area
Sauk Floodplain
IUCN VConservation Land
0.51 km² overlap
Conservation Easement
0.50 km² overlap
Wild and Scenic River
0.34 km² overlap
Tenas Creek
IUCN VConservation Land
0.31 km² overlap
North Everett Creek
IUCN VConservation Land
0.28 km² overlap
Perry Creek
IUCN IaResearch Natural Area
0.26 km² overlap
Sauk Island
IUCN VConservation Land
0.22 km² overlap
North Sauk
IUCN VConservation Land
0.20 km² overlap
Dan Creek
IUCN VConservation Land
0.17 km² overlap
Sauk
IUCN VWetland
0.16 km² overlap
Wild Sky
IUCN IbWilderness
0.05 km² overlap
Napoleon
IUCN VConservation Land
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 250 distinct species · 66 205 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Suiattle River : 27 espèces reliées par 66 interactions GloBI sur 5 types (connectance 9.4%, filtre Serrano α=0.2). 11 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°
4,4°C
Annual rain
1 815mm
Moisture idx (CMI)
0,62
Runoff
1 521mm/an
PET
690mm
AET
559mm
Mean slope
23,9°
Water table
856cm
Forest
85%
Crops
0%
Urban
0%
Protected
58%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)