Watersheds · usa
Seattle Public Utilities Watersheds
- Area
- 357 km²
- IUCN cat.
- V
Overview
- Designation
- Watersheds
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
0 - Managing authority
- Forest Service ; City Land
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
987 distinct species · 20 064 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 Seattle Public Utilities Watersheds : 33 espèces reliées par 123 interactions GloBI sur 4 types (connectance 11.4%, 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).
Hydrology8 basins · 6 lakes · 22 rivers
Hydrology metrics for this exact territory
Stream length here
124,1km
Lake surface here
6,50km²
Basins crossed
8
Max stream order
4
Max drainage
1 776km²
Discharge in basins
13,8m³/s
Mean precip.
1 476mm/an
Mean T°
9,4°C
Moisture idx
0,38
Max snow
43%
Mean runoff
1 161mm/an
Mean elev. (basins)
303m
Watersheds crossing here
- Bassin de Cedar Riversub-area1 527,9 km²overlap309.25 km²87%
- Bassin de Green Riversub-area1 184,6 km²overlap21.44 km²6%
- Bassin de North Fork Tolt Riversub-area335,4 km²overlap18.10 km²5%
- Bassin de South Fork Snoqualmie Riversub-area489,6 km²overlap7.07 km²2%
- Bassin de North Fork Snoqualmie Riversub-area264,7 km²overlap0.72 km²0%
- Bassin de Yakima Riversub-area676,7 km²overlap0.19 km²0%
- Bassin de East Waterwaysub-area28 km²overlap0.16 km²0%
- Bassin de Snoqualmie Riversub-area240,5 km²overlap0.03 km²0%
Lakes (6, top by area)
Rivers / streams (22, ord ≥ 4)
- Cedar Riverord 3len here42.17 km47%total89 km
- Rex Riverord 3len here16.77 km97%total17 km
- Taylor Creekord 2len here14.42 km100%total14 km
- North Fork Cedar Riverord 2len here6.67 km89%total8 km
- Tolt River South Forkord 2len here6.16 km46%total13 km
- Rock Creekord 2len here6.01 km91%total7 km
- Boulder Creekord 2len here5.18 km100%total5 km
- North Fork Tolt Riverord 3len here4.93 km12%total43 km
- Webster Creekord 1len here4.17 km100%total4 km
- Seattle Creekord 1len here3.81 km100%total4 km
- Bear Creekord 3len here3.13 km15%total21 km
- Williams Creekord 3len here2.89 km98%total3 km
10 more river segmentssorted by Strahler order + length
- Yellow Creekord 2len here2.14 km37%total6 km
- South Fork Tolt Riverord 2len here1.72 km24%total7 km
- Big Soos Creekord 3len here1.28 km5%total24 km
- Goat Creekord 1len here1.23 km43%total3 km
- Tinkham Creekord 1len here0.69 km101%total1 km
- Rack Creekord 1len here0.32 km13%total3 km
- Otter Creekord 1len here0.32 km28%total1 km
- Sammamish Riverord 4len here0.04 km0%total22 km
- Cottage Lake Creekord 2len here0.04 km1%total5 km
- Collin Creekord 1len here≈ tangenttotal3 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 47.34894, -121.65122
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.