HydroBASINS lev08 watershed · #7080486840
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 3 administrative regions : Franklin, Hampden, Hampshire
Sub-basin area
1 152,5km²
Upstream area
21 433,7km²
Discharge
414,95m³/s
Mean elev.
158m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Deerfield River1708 km²
- Bassin de Fall River120 km²
3 dept-equivalent regions (GADM L2)
- 705.4 km²61.1% of basin
- Franklin345.8 km²30.0% of basin
- 103.1 km²8.9% of basin
30 intersecting protected areas
Paul C. Jones Working Forest WCE
IUCN Not AssignedForest
14.23 km² overlap
Mount Holyoke Range
IUCN IIIState Park
12.65 km² overlap
Graves Farm
IUCN VWildlife Sanctuary
3.34 km² overlap
Wildlife Refuge
3.02 km² overlap
Arcadia
IUCN VWildlife Sanctuary
2.70 km² overlap
J.A. Skinner
IUCN IIIState Park
2.64 km² overlap
Cadwell
IUCN Not AssignedMemorial Forest
2.42 km² overlap
Mineral Hills Conservation Area CR
IUCN Not AssignedConservation Area
1.60 km² overlap
Reserve
1.11 km² overlap
21 more protected areassorted by overlap area
M & M
IUCN Not AssignedTrail
1.07 km² overlap
Broad Brook | Kestrel Land Trust
IUCN Not AssignedGreenway
0.97 km² overlap
Scheffey CR
IUCN Not AssignedConservation Easement
0.89 km² overlap
Westfield Watershed WCE
IUCN Not AssignedWatershed
0.85 km² overlap
Wolf Hill CR
IUCN Not AssignedConservation Easement
0.83 km² overlap
Valley Land Fund 340-79
IUCN Not AssignedConservation Easement
0.81 km² overlap
Lynes Property
IUCN VPrivate Conservation
0.76 km² overlap
Smith College CR
IUCN Not AssignedCollege
0.76 km² overlap
Phelps CR
IUCN Not AssignedConservation Easement
0.75 km² overlap
Connecticut River Greenway
IUCN Not AssignedState Park
0.68 km² overlap
Anderson/Guyette CR
IUCN Not AssignedConservation Easement
0.68 km² overlap
High Ridge Farm Cr
IUCN Not AssignedConservation Easement
0.68 km² overlap
Teawaddle Hill Farm CR
IUCN Not AssignedConservation Easement
0.59 km² overlap
Butternut
IUCN VWildlife Sanctuary
0.56 km² overlap
Unknown
IUCN VPark
0.55 km² overlap
Bradford Brook CR
IUCN Not AssignedConservation Easement
0.50 km² overlap
Smith CR
IUCN Not AssignedConservation Easement
0.47 km² overlap
Conway
IUCN Not AssignedState Forest
0.46 km² overlap
Ram Hill WCE
IUCN Not AssignedConservation Easement
0.46 km² overlap
Spencer/Kenerson CR
IUCN Not AssignedConservation Easement
0.45 km² overlap
Hull Bungy
IUCN Not AssignedConservation Easement
0.43 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 812 distinct species · 2 647 043 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 : 26 espèces reliées par 81 interactions GloBI sur 4 types (connectance 12.2%, 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°
8,1°C
Annual rain
1 149mm
Moisture idx (CMI)
0,14
Runoff
747mm/an
PET
983mm
AET
785mm
Mean slope
4,1°
Water table
340cm
Forest
91%
Crops
11%
Urban
17%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)