HydroBASINS lev08 watershed · #7080390740
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 2 administrative regions : Queens, Sunbury
Sub-basin area
314,1km²
Upstream area
44 953,6km²
Discharge
940,07m³/s
Mean elev.
35m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 161.6 km²51.3% of basin
- Queens153.2 km²48.7% of basin
23 intersecting protected areas
Grand Lake
IUCN IIProtected Natural Area
8.20 km² overlap
4040100
IUCN IINature Legacy protected area
1.23 km² overlap
Portobello Creek
IUCN Not ReportedBiens immobiliers fédéraux
0.79 km² overlap
Gilbert Island
IUCN Not ReportedFederal Real Property
0.77 km² overlap
Nələkwənəkek / Noloqonokek
IUCN IbNature Preserve
0.71 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.68 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.63 km² overlap
Malsonawihkuk
IUCN IbNature Preserve
0.56 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.50 km² overlap
14 more protected areassorted by overlap area
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.45 km² overlap
National Wildlife Area
0.36 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.26 km² overlap
Portobello Creek
IUCN Not ReportedFederal Real Property
0.23 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.22 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.18 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.13 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.12 km² overlap
Nələkwənəkek / Noloqonokek
IUCN IbNature Preserve
0.12 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.11 km² overlap
Nature Preserve
0.11 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.07 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.06 km² overlap
DUC Fee Simple Lands
IUCN IVOwnership by Environmental Non-Governmental Organization
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
834 distinct species · 14 307 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 Saint John River : 23 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 3 types (connectance 12.8%, 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°
5,6°C
Annual rain
1 124mm
Moisture idx (CMI)
0,31
Runoff
678mm/an
PET
778mm
AET
650mm
Mean slope
1,2°
Water table
78cm
Forest
52%
Crops
0%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)