HydroBASINS lev08 watershed · #7080016150

Bassin de Samish 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 2 administrative regions : Skagit, Whatcom

11% lakePfafstetter: 78310902

Sub-basin area

288,2km²

Upstream area

288,2km²

Discharge

7,73m³/s

Mean elev.

219m

Administrative coverage

2 dept-equivalent regions (GADM L2)

Skagit
Washington · United States
212.0 km²
73.3% of basin
Whatcom
Washington · United States
77.0 km²
26.6% of basin

10 intersecting protected areas

Wetlands Reserve Program (WRP), Skagit, WA
IUCN V
Reserve Program
0.45 km² overlap
Skagit-Snoqualmie
IUCN V
Wildlife Area Complex
0.43 km² overlap
Wetlands Reserve Program (WRP), Skagit, WA
IUCN V
Reserve Program
0.32 km² overlap
Skagit Land Trust
IUCN V
Local Land Trust
0.29 km² overlap
Whatcom
IUCN V
Wildlife Area Complex
0.23 km² overlap
Innis Creek
IUCN V
Local Land Trust
0.20 km² overlap
Us-Wa-119-2
IUCN Not Assigned
Conservation Easement
0.19 km² overlap
Wetlands Reserve Program (WRP), Skagit, WA
IUCN V
Reserve Program
0.04 km² overlap
Swami
IUCN V
Local Land Trust
0.04 km² overlap

1 more protected areassorted by overlap area

Padilla Bay National Estuarine Research Reserve
IUCN IV
Marine Protected Area
0.01 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 468 distinct species · 210 907 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 29 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Samish River : 18 espèces reliées par 82 interactions GloBI sur 4 types (connectance 18.9%, filtre Serrano α=0.2). 12 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.189

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

9,2°C

Annual rain

1 164mm

Moisture idx (CMI)

0,30

Runoff

883mm/an

PET

780mm

AET

592mm

Mean slope

8,2°

Water table

269cm

Forest

78%

Crops

24%

Urban

Protected

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)