HydroBASINS lev08 watershed · #7080016220
Bassin de Hjorth 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 across 2 countries : Greater Vancouver, Whatcom
Sub-basin area
352,6km²
Upstream area
352,6km²
Discharge
0,06m³/s
Mean elev.
24m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 313.9 km²88.7% of basin
- 13.9 km²3.9% of basin
30 intersecting protected areas
Fraser River Delta
IUCN Not ReportedWetland of International Importance (Ramsar Site)
39.42 km² overlap
Protected Area
13.69 km² overlap
Wildlife Management Area
8.10 km² overlap
Wildlife Management Area
7.63 km² overlap
Wildlife Management Area
7.43 km² overlap
National Wildlife Area
3.63 km² overlap
Tynehead Regional Park
IUCN IVProtected Area
2.41 km² overlap
Migratory Bird Sanctuary
1.89 km² overlap
Wildlife Management Area
1.50 km² overlap
21 more protected areassorted by overlap area
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
1.45 km² overlap
Robert Backup Lands
IUCN IVPrivately Owned Conservation Area
1.39 km² overlap
Migratory Bird Sanctuary
1.29 km² overlap
Boundary Bay Regional Park
IUCN IVProtected Area
1.19 km² overlap
Privately Owned Conservation Area
0.88 km² overlap
Wildlife Management Area
0.71 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.60 km² overlap
Westham Island - Trim Road
IUCN IVPrivately Owned Conservation Area
0.60 km² overlap
Privately Owned Conservation Area
0.36 km² overlap
Boundary Bay - Grauer Beach
IUCN IVPrivately Owned Conservation Area
0.32 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.32 km² overlap
Westham Island - Singh Farm
IUCN IVPrivately Owned Conservation Area
0.31 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.31 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.31 km² overlap
Whatcom
IUCN VWildlife Area Complex
0.17 km² overlap
Westham Island - Telus
IUCN IVPrivately Owned Conservation Area
0.08 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.08 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.05 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.05 km² overlap
Privately Owned Conservation Area
0.05 km² overlap
Mud Bay
IUCN IVPrivately Owned Conservation Area
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 284 distinct species · 1 065 539 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Hjorth Creek : 22 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 3 types (connectance 14.5%, filtre Serrano α=0.2). 10 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°
9,8°C
Annual rain
1 201mm
Moisture idx (CMI)
0,34
Runoff
1 312mm/an
PET
782mm
AET
575mm
Mean slope
1,1°
Water table
100cm
Forest
5%
Crops
17%
Urban
37%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)