HydroBASINS lev08 watershed · #8080188870
Bassin de Tammarvi 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 1 administrative regions : Keewatin
Sub-basin area
772,5km²
Upstream area
772,5km²
Discharge
4,19m³/s
Mean elev.
242m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
1 intersecting protected areas
Thelon Wildlife Sanctuary
IUCN IbWildlife Sanctuary
777.51 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
-12,0°C
Annual rain
207mm
Moisture idx (CMI)
-0,31
Runoff
171mm/an
PET
299mm
AET
196mm
Mean slope
2,0°
Water table
72cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)