HydroBASINS lev08 watershed · #7080424730
Bassin de Connecticut 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 : Coaticook, Coos, Essex, Le Haut-Saint-François
Sub-basin area
2 399,4km²
Upstream area
2 399,4km²
Discharge
48,28m³/s
Mean elev.
533m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1297.5 km²54.0% of basin
- Essex824.2 km²34.3% of basin
- 281.5 km²11.7% of basin
- 1.5 km²0.1% of basin
30 intersecting protected areas
Wildlife Refuge
108.48 km² overlap
Conservation Easement
87.53 km² overlap
Easement
56.09 km² overlap
Preserve
41.90 km² overlap
West Mountain Inholding
IUCN VPrivate Conservation Land
5.20 km² overlap
Wildlife Refuge
4.82 km² overlap
West Mountain
IUCN VWildlife Management Area
3.16 km² overlap
Recognized nature reserve
2.39 km² overlap
Norton Pool
IUCN VPreserve
1.71 km² overlap
21 more protected areassorted by overlap area
State Park
1.35 km² overlap
Hurlburt Swamp
IUCN VPreserve
1.28 km² overlap
Hedgehog Brook
IUCN VWildlife Management Area
1.12 km² overlap
Fort Hill
IUCN VWildlife Management Area
1.12 km² overlap
Vickie Bunnell
IUCN VPreserve
1.10 km² overlap
Conservation Easement
1.08 km² overlap
Maidstone Bends
IUCN VPrivate Conservation Land
1.03 km² overlap
Reserve Program
1.02 km² overlap
Tuttle
IUCN VPond
0.82 km² overlap
Natural Area Under Private Stewardship
0.52 km² overlap
Conservation Easement
0.43 km² overlap
Maidstone Bends
IUCN VPrivate Conservation Land
0.33 km² overlap
Saint Herménégilde (partie les Forêts DRHV SENC) Natural Area Under Private Stewardship
IUCN Not ReportedNatural Area Under Private Stewardship
0.31 km² overlap
Fourth Connecticut Lake
IUCN VPreserve
0.29 km² overlap
French
IUCN VWildlife Refuge
0.22 km² overlap
Hurlburt Swamp
IUCN VPrivate Conservation
0.13 km² overlap
Dixville Notch
IUCN IIIState Park
0.12 km² overlap
Watershed Protection
0.07 km² overlap
Reserve Program
0.06 km² overlap
Beaver Brook Falls
IUCN VNatural Area
0.03 km² overlap
Colebrook 04-3007
IUCN VConservation Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 353 distinct species · 336 659 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Connecticut River : 27 espèces reliées par 76 interactions GloBI sur 3 types (connectance 11.4%, filtre Serrano α=0.2). 10 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°
3,4°C
Annual rain
1 113mm
Moisture idx (CMI)
0,29
Runoff
739mm/an
PET
786mm
AET
690mm
Mean slope
6,5°
Water table
219cm
Forest
99%
Crops
4%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)