HydroBASINS lev08 watershed · #7080403360
Bassin de Rivière Tomifobia
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 6 administrative regions across 2 countries : Coaticook, Essex, La Région-Sherbrookoise, Le Haut-Saint-François, Memphrémagog +1
Sub-basin area
1 714,9km²
Upstream area
1 714,9km²
Discharge
39,48m³/s
Mean elev.
369m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 996.7 km²58.0% of basin
- 269.8 km²15.7% of basin
- Essex177.4 km²10.3% of basin
- Orleans111.9 km²6.5% of basin
- 108.7 km²6.3% of basin
- 54.1 km²3.1% of basin
5 intersecting protected areas
Natural Area Under Private Stewardship
1.76 km² overlap
Pherrins River
IUCN VConservation Easement
0.79 km² overlap
Natural Area Under Private Stewardship
0.44 km² overlap
Little Averill
IUCN VPrivate Conservation Land
0.17 km² overlap
Universitaire du Parc-du-Mont-Bellevue (Secteur de l'Université-de-Sherbrooke) Natural reserve
IUCN Not ReportedRecognized nature reserve
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 376 distinct species · 401 452 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Rivière Tomifobia : 19 espèces reliées par 58 interactions GloBI sur 3 types (connectance 14.3%, 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°
4,1°C
Annual rain
1 090mm
Moisture idx (CMI)
0,25
Runoff
723mm/an
PET
812mm
AET
695mm
Mean slope
3,4°
Water table
132cm
Forest
95%
Crops
20%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)