HydroBASINS lev08 watershed · #7080494660
Bassin de Westfield 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 6 administrative regions : Berkshire, Franklin, Hampden, Hampshire, Hartford +1
Sub-basin area
2 072,5km²
Upstream area
25 448,5km²
Discharge
505,73m³/s
Mean elev.
258m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ware River1942 km²
- Bassin de Connecticut River1153 km²
6 dept-equivalent regions (GADM L2)
- 865.5 km²41.7% of basin
- 435.5 km²21.0% of basin
- 345.0 km²16.6% of basin
- 250.4 km²12.1% of basin
- 134.2 km²6.5% of basin
- Franklin45.2 km²2.2% of basin
30 intersecting protected areas
Notchview
IUCN VReservation
11.87 km² overlap
Middlefield
IUCN VIState Forest
11.69 km² overlap
Gilbert A. Bliss
IUCN VIState Forest
8.70 km² overlap
Westfield Watershed WCE
IUCN Not AssignedWatershed
8.70 km² overlap
Abbott Brook WCE
IUCN Not AssignedConservation Easement
7.45 km² overlap
West Mountain Wildlife Sanctuary CR
IUCN Not AssignedWildlife Sanctuary
4.74 km² overlap
Knightville WCE
IUCN Not AssignedConservation Easement
3.18 km² overlap
Stage Brook WCE
IUCN Not AssignedConservation Easement
2.77 km² overlap
Scantic River
IUCN IIIState Park
2.71 km² overlap
21 more protected areassorted by overlap area
Wildlife Refuge
2.06 km² overlap
West Mountain CR
IUCN Not AssignedConservation Easement
1.90 km² overlap
Cold Brook WCE
IUCN Not AssignedConservation Easement
1.82 km² overlap
Laughing Brook
IUCN VPrivate Conservation
1.50 km² overlap
Noble View CR
IUCN Not AssignedConservation Easement
1.43 km² overlap
Tolland
IUCN VIState Forest
1.42 km² overlap
Tower Brook WCE
IUCN Not AssignedConservation Easement
1.23 km² overlap
Herrick-Knittel
IUCN Not AssignedConservation Area
1.02 km² overlap
Pisgah Forest Preserve CR
IUCN Not AssignedForest Preserve
0.99 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Hampden, MA
IUCN VConservation Easement
0.90 km² overlap
Chicoyne Parcel
IUCN Not AssignedConservation Easement
0.88 km² overlap
Re CR
IUCN Not AssignedConservation Easement
0.84 km² overlap
Chesterfield Gorge
IUCN VReservation
0.81 km² overlap
Bryant Homestead
IUCN VPCL
0.81 km² overlap
Plehn Cr
IUCN Not AssignedConservation Easement
0.80 km² overlap
Mountainstar Forest CR
IUCN Not AssignedForest
0.77 km² overlap
Private Conservation
0.77 km² overlap
Strasburg Cr
IUCN Not AssignedConservation Easement
0.76 km² overlap
Scout Pond WCE
IUCN Not AssignedPond
0.71 km² overlap
Lilly Pond WCE
IUCN Not AssignedPond
0.71 km² overlap
Boulder Hill CR
IUCN Not AssignedConservation Easement
0.66 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
5 009 distinct species · 1 027 072 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Westfield River : 25 espèces reliées par 89 interactions GloBI sur 4 types (connectance 14.1%, 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°
8,0°C
Annual rain
1 185mm
Moisture idx (CMI)
0,19
Runoff
798mm/an
PET
962mm
AET
786mm
Mean slope
4,3°
Water table
383cm
Forest
90%
Crops
5%
Urban
17%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)