HydroBASINS lev08 watershed · #7080423740
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 2 administrative regions : Jefferson, Saint Lawrence
Sub-basin area
793,7km²
Upstream area
2 654,6km²
Discharge
57,14m³/s
Mean elev.
122m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Matoon Creek150 km²
- Bassin de Oswegatchie River75 km²
2 dept-equivalent regions (GADM L2)
- Saint LawrenceNew York · United States732.6 km²92.1% of basin
- JeffersonNew York · United States62.8 km²7.9% of basin
5 intersecting protected areas
Upper And Lower Lakes
IUCN VWildlife Management Area
31.78 km² overlap
Reserve Program
18.45 km² overlap
Beaver Creek
IUCN IbState Forest
7.05 km² overlap
Reserve Program
1.39 km² overlap
New York
IUCN VState Lands
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 094 distinct species · 106 672 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 : 24 espèces reliées par 70 interactions GloBI sur 3 types (connectance 11.8%, 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°
6,5°C
Annual rain
923mm
Moisture idx (CMI)
0,06
Runoff
543mm/an
PET
870mm
AET
664mm
Mean slope
1,7°
Water table
79cm
Forest
86%
Crops
25%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)