HydroBASINS lev08 watershed · #7080016160
Bassin de Colony Creek
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
Sub-basin area
109,1km²
Upstream area
109,2km²
Discharge
2,86m³/s
Mean elev.
171m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 51.7 km²47.3% of basin
- 50.9 km²46.5% of basin
18 intersecting protected areas
Us-Wa-120-1
IUCN Not AssignedConservation Easement
0.23 km² overlap
Reserve Program
0.16 km² overlap
South Samish Crest
IUCN VOpen Space
0.15 km² overlap
Whatcom
IUCN VWildlife Area Complex
0.15 km² overlap
Lake Padden
IUCN VOpen Space
0.15 km² overlap
San Juan Islands
IUCN VNational Monument
0.12 km² overlap
Open Space
0.11 km² overlap
Open Space
0.09 km² overlap
Post Point Treatment P
IUCN VTreatment Plant
0.05 km² overlap
9 more protected areassorted by overlap area
Whatcom Land Trust
IUCN VLocal Land Trust
0.05 km² overlap
Chuckanut Island
IUCN VPrivate Conservation Land
0.03 km² overlap
Parkhurst
IUCN VOpen Space
0.02 km² overlap
Lowell Park
IUCN VOpen Space
0.02 km² overlap
Samish Crest
IUCN VOpen Space
0.02 km² overlap
Puget Sound Energy
IUCN VConservation Land
0.01 km² overlap
Samish Heights
IUCN VOpen Space
0.01 km² overlap
Samish Glen
IUCN VOpen Space
0.01 km² overlap
Lenora Court
IUCN VOpen Space
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 083 distinct species · 181 131 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Colony Creek : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 83 interactions GloBI sur 4 types (connectance 10.1%, filtre Serrano α=0.2). 12 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°
9,4°C
Annual rain
1 027mm
Moisture idx (CMI)
0,24
Runoff
829mm/an
PET
769mm
AET
573mm
Mean slope
9,1°
Water table
378cm
Forest
82%
Crops
8%
Urban
15%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)