HydroBASINS lev08 watershed · #7080432080
Bassin de Oswegatchie 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 : Saint Lawrence
Sub-basin area
227,2km²
Upstream area
884,7km²
Discharge
20,93m³/s
Mean elev.
296m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oswegatchie River481 km²
- Bassin de Little River177 km²
1 dept-equivalent regions (GADM L2)
- Saint LawrenceNew York · United States227.7 km²100.0% of basin
4 intersecting protected areas
Reserve Program
0.53 km² overlap
Bonner Lake
IUCN IbState Forest
0.40 km² overlap
Grasse River
IUCN VWild Forest
0.14 km² overlap
New York
IUCN VState Lands
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
592 distinct species · 4 378 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Oswegatchie River : 26 espèces reliées par 86 interactions GloBI sur 4 types (connectance 11.6%, 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°
5,7°C
Annual rain
1 020mm
Moisture idx (CMI)
0,15
Runoff
656mm/an
PET
864mm
AET
693mm
Mean slope
3,3°
Water table
192cm
Forest
99%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)