HydroBASINS lev08 watershed · #7080394030
Bassin de Saint John 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 : Queens
Sub-basin area
81,3km²
Upstream area
48 858,5km²
Discharge
1 027,69m³/s
Mean elev.
29m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Saint John River314 km²
- Bassin de Jemseg River37 km²
1 dept-equivalent regions (GADM L2)
- Queens81.5 km²100.0% of basin
9 intersecting protected areas
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
3.70 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
2.87 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.83 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.70 km² overlap
4040300
IUCN IINature Legacy protected area
0.67 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.55 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.50 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.36 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
542 distinct species · 11 872 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 John River : 28 espèces reliées par 97 interactions GloBI sur 4 types (connectance 12.4%, filtre Serrano α=0.2). 12 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 142mm
Moisture idx (CMI)
0,32
Runoff
698mm/an
PET
771mm
AET
649mm
Mean slope
1,6°
Water table
113cm
Forest
44%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)