HydroBASINS lev08 watershed · #7080450600
Bassin de West Branch Sandy 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 4 administrative regions across 2 countries : Lake Ontario, Monroe, Orleans
Sub-basin area
456,3km²
Upstream area
699 735,3km²
Discharge
6 505,01m³/s
Mean elev.
90m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ganaraska River624 km²
- Bassin · #70804505809 km²
4 dept-equivalent regions (GADM L2)
- Lake OntarioNew York · United States311.4 km²68.1% of basin
- OrleansNew York · United States134.6 km²29.4% of basin
- 6.8 km²1.5% of basin
- MonroeNew York · United States4.4 km²1.0% of basin
1 intersecting protected areas
Reserve Program
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
339 distinct species · 19 437 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 West Branch Sandy Creek : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 73 interactions GloBI sur 3 types (connectance 15.7%, 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°
8,3°C
Annual rain
793mm
Moisture idx (CMI)
-0,10
Runoff
450mm/an
PET
881mm
AET
639mm
Mean slope
0,2°
Water table
8cm
Forest
11%
Crops
22%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)