HydroBASINS lev08 watershed · #7080056350
Bassin de Mahatta 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 : Comox-Strathcona, Mount Waddington
Sub-basin area
1 873,8km²
Upstream area
1 873,8km²
Discharge
31,01m³/s
Mean elev.
324m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 954.7 km²50.8% of basin
- 786.6 km²41.8% of basin
23 intersecting protected areas
A - Park
360.11 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
27.85 km² overlap
Ecological Reserve
24.53 km² overlap
A - Park
22.22 km² overlap
Protected Area
16.81 km² overlap
LAWN POINT PARK
IUCN IIA - Park
5.22 km² overlap
Ecological Reserve
4.46 km² overlap
MARBLE RIVER PARK
IUCN IIA - Park
3.34 km² overlap
TAHSISH-KWOIS PARK
IUCN IbA - Park
3.12 km² overlap
14 more protected areassorted by overlap area
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
2.76 km² overlap
BIG BUNSBY MARINE PARK
IUCN IIA - Park
2.67 km² overlap
BIG BUNSBY MARINE PARK
IUCN IIA - Park
2.62 km² overlap
Ecological Reserve
1.22 km² overlap
MARBLE RIVER PARK
IUCN IIA - Park
1.08 km² overlap
LAWN POINT PARK
IUCN IIA - Park
0.72 km² overlap
Ecological Reserve
0.60 km² overlap
Ecological Reserve
0.27 km² overlap
Ecological Reserve
0.14 km² overlap
Ecological Reserve
0.10 km² overlap
Ecological Reserve
0.08 km² overlap
Marble River Estuary
IUCN IVPrivately Owned Conservation Area
0.02 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.01 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 514 distinct species · 22 527 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Mahatta Creek : 28 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 5 types (connectance 9.9%, 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°
7,4°C
Annual rain
2 390mm
Moisture idx (CMI)
0,76
Runoff
2 482mm/an
PET
566mm
AET
538mm
Mean slope
18,6°
Water table
615cm
Forest
98%
Crops
0%
Urban
0%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)