HydroBASINS lev08 watershed · #7080380260
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 4 administrative regions across 2 countries : Aroostook, Carleton, Victoria, York
Sub-basin area
2 475,6km²
Upstream area
35 701,2km²
Discharge
728,87m³/s
Mean elev.
202m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tobique River744 km²
- Bassin de Saint John River23 km²
4 dept-equivalent regions (GADM L2)
- 1633.9 km²65.8% of basin
- 500.3 km²20.2% of basin
- 266.1 km²10.7% of basin
- 81.7 km²3.3% of basin
30 intersecting protected areas
East Cloverdale
IUCN IIProtected Natural Area
10.88 km² overlap
Howard Brook
IUCN IIProtected Natural Area
6.68 km² overlap
Porcupine Mountain
IUCN IIProtected Natural Area
4.18 km² overlap
4032200
IUCN IINature Legacy protected area
4.08 km² overlap
Otter Brook
IUCN IIProtected Natural Area
3.34 km² overlap
Blind Gully Brook
IUCN IIProtected Natural Area
3.31 km² overlap
4030600
IUCN IINature Legacy protected area
2.89 km² overlap
4031300
IUCN IINature Legacy protected area
2.58 km² overlap
Clarke Brook
IUCN IIProtected Natural Area
1.95 km² overlap
21 more protected areassorted by overlap area
4030900
IUCN IINature Legacy protected area
1.74 km² overlap
4030700
IUCN IINature Legacy protected area
1.35 km² overlap
Hidden Lakes
IUCN IbNature Preserve
1.19 km² overlap
Two Mile Brook Fen
IUCN IbProtected Natural Area
1.17 km² overlap
Williamstown Lake
IUCN IIProtected Natural Area
1.04 km² overlap
Golden Ridge
IUCN IIProtected Natural Area
1.04 km² overlap
Oakland Mountain
IUCN IIProtected Natural Area
0.92 km² overlap
Nature Preserve
0.91 km² overlap
4031200
IUCN IINature Legacy protected area
0.88 km² overlap
Stickney
IUCN IIProtected Natural Area
0.86 km² overlap
Angle Hill Lake
IUCN IIProtected Natural Area
0.79 km² overlap
4031700
IUCN IINature Legacy protected area
0.77 km² overlap
Becaguimec Stream
IUCN IbProtected Natural Area
0.75 km² overlap
4031400
IUCN IINature Legacy protected area
0.68 km² overlap
4006900
IUCN IINature Legacy protected area
0.67 km² overlap
Lakeville
IUCN IIProtected Natural Area
0.62 km² overlap
Ayers Lake
IUCN Not ApplicablePrivate Ecologically Significant Area
0.60 km² overlap
Armstrong Woods
IUCN IbNature Preserve
0.52 km² overlap
Shikatehawk Stream
IUCN IIProtected Natural Area
0.52 km² overlap
4000200
IUCN IINature Legacy protected area
0.50 km² overlap
Demerchant Brook
IUCN IaProtected Natural Area
0.49 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 793 distinct species · 66 302 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 : 19 espèces reliées par 61 interactions GloBI sur 4 types (connectance 14.0%, 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°
4,0°C
Annual rain
1 016mm
Moisture idx (CMI)
0,21
Runoff
716mm/an
PET
799mm
AET
643mm
Mean slope
3,8°
Water table
121cm
Forest
87%
Crops
17%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)