HydroBASINS lev08 watershed · #7080752580
Bassin de Saint Marys 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 : Baker, Charlton
Sub-basin area
284,2km²
Upstream area
864,6km²
Discharge
7,89m³/s
Mean elev.
40m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 182.3 km²64.2% of basin
- 101.6 km²35.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
578 distinct species · 2 164 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Saint Marys River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 3 types (connectance 12.1%, filtre Serrano α=0.2). 15 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°
19,8°C
Annual rain
1 361mm
Moisture idx (CMI)
-0,11
Runoff
297mm/an
PET
1 524mm
AET
1 151mm
Mean slope
0,2°
Water table
29cm
Forest
90%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)