Ruisseau· 11 segments
Rivière de l'Achigan
Crosses 4 administrative regions : L'Assomption, La Rivière-du-Nord, Matawinie, Montcalm
Total length
73km
Max discharge
10,1m³/s
Max Strahler
3
Segments matched
11
River geography4 admin regions · 0 communes
4 administrative regions crossed (GADM L2)
- MontcalmQuébec · Canada26.4 kmin this dpt
- La Rivière-du-NordQuébec · Canada15.0 kmin this dpt
- MatawinieQuébec · Canada2.2 kmin this dpt
- L'AssomptionQuébec · Canada0.8 kmin this dpt
3 intersecting protected areas
Proposed biodiversity reserve
Land reserved for protected area
Racines Nature Reserve
IUCN Not ReportedRecognized nature reserve
1 page = 1 named river (aggregation of 11 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
151 distinct species · 399 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 46 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 Rivière de l'Achigan : 34 espèces reliées par 98 interactions GloBI sur 4 types (connectance 9.1%, 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).
Hydrology (HydroRIVERS v10)
Total length
73km
Max discharge
10,1m³/s
Max Strahler
3
Segments matched
11
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.