HydroBASINS lev08 watershed · #7080016640
Bassin de Theodosia 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 : Comox-Strathcona, Powell River
Sub-basin area
1 385,9km²
Upstream area
1 385,9km²
Discharge
2,91m³/s
Mean elev.
473m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- Powell River836.7 km²60.2% of basin
- 422.5 km²30.4% of basin
30 intersecting protected areas
Ecological Reserve
61.82 km² overlap
Old Growth Management Areas (Mapped Legal)
IUCN Not ApplicableOld Growth Management Areas (Mapped Legal)
57.06 km² overlap
DESOLATION SOUND MARINE PARK
IUCN IIA - Park
54.19 km² overlap
DESOLATION SOUND MARINE PARK
IUCN IIA - Park
14.89 km² overlap
A - Park
10.39 km² overlap
MALASPINA PARK
IUCN IIA - Park
5.76 km² overlap
A - Park
2.43 km² overlap
ROSCOE BAY PARK
IUCN IIA - Park
2.14 km² overlap
COPELAND ISLANDS MARINE PARK
IUCN IIA - Park
2.08 km² overlap
21 more protected areassorted by overlap area
COPELAND ISLANDS MARINE PARK
IUCN IIA - Park
1.45 km² overlap
Privately Owned Conservation Area
1.42 km² overlap
Wildlife Habitat Areas
IUCN Not ApplicableWildlife Habitat Areas
1.34 km² overlap
TEAKERNE ARM PARK
IUCN IIIA - Park
1.25 km² overlap
A - Park
0.67 km² overlap
MANSONS LANDING PARK
IUCN IIA - Park
0.52 km² overlap
MANSONS LANDING PARK
IUCN IIA - Park
0.52 km² overlap
A - Park
0.47 km² overlap
WALSH COVE PARK
IUCN IIA - Park
0.42 km² overlap
WALSH COVE PARK
IUCN IIA - Park
0.38 km² overlap
ROSCOE BAY PARK
IUCN IIA - Park
0.28 km² overlap
SMELT BAY PARK
IUCN Not ReportedA - Park
0.18 km² overlap
Sunset Trail
IUCN IVPrivately Owned Conservation Area
0.16 km² overlap
TEAKERNE ARM PARK
IUCN IIIA - Park
0.12 km² overlap
Hague Lake Island
IUCN IVPrivately Owned Conservation Area
0.03 km² overlap
OKEOVER ARM PARK
IUCN Not ReportedA - Park
0.03 km² overlap
SMELT BAY PARK
IUCN Not ReportedA - Park
0.02 km² overlap
MacDougall Forest
IUCN IVPrivately Owned Conservation Area
0.01 km² overlap
Privately Owned Conservation Area
0.01 km² overlap
Indian Point
IUCN IVPrivately Owned Conservation Area
0.00 km² overlap
1306 Savary Island Road
IUCN IVPrivately Owned Conservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
920 distinct species · 93 960 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Theodosia River : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 3 types (connectance 14.1%, filtre Serrano α=0.2). 13 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°
8,0°C
Annual rain
1 227mm
Moisture idx (CMI)
0,43
Runoff
1 275mm/an
PET
694mm
AET
544mm
Mean slope
18,1°
Water table
612cm
Forest
86%
Crops
0%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)