HydroBASINS lev08 watershed · #7080470780
Bassin de Ashuelot 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 : Cheshire, Franklin, Sullivan, Worcester
Sub-basin area
1 089,2km²
Upstream area
1 089,2km²
Discharge
21,1m³/s
Mean elev.
340m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 1001.0 km²91.7% of basin
- Sullivan67.6 km²6.2% of basin
- Franklin21.5 km²2.0% of basin
- Worcester1.0 km²0.1% of basin
30 intersecting protected areas
Otter Brook
IUCN VConservation Easement
41.38 km² overlap
Monadnock
IUCN VReservation
8.78 km² overlap
Otter Brook
IUCN VPreserve
5.03 km² overlap
Taves
IUCN VReservation
2.18 km² overlap
Rhododendron
IUCN IIIState Park
1.91 km² overlap
Horatio Colony
IUCN VPreserve
1.63 km² overlap
Kensan-Devan
IUCN VWildlife Sanctuary
1.52 km² overlap
Richards
IUCN VWildlife Sanctuary
1.37 km² overlap
Orenda-Stickey Wicket II
IUCN VWildlife Sanctuary
1.26 km² overlap
21 more protected areassorted by overlap area
Bennett
IUCN Not AssignedTown Forest
1.17 km² overlap
Whippoorwill Farm East
IUCN Not AssignedConservation Easement
1.05 km² overlap
Ashuelot River
IUCN IIIPark
0.97 km² overlap
Athena's Wood
IUCN Not AssignedConservation Easement
0.94 km² overlap
Warwick
IUCN Not AssignedState Forest
0.93 km² overlap
Pond
0.81 km² overlap
Winchester Town Forest
IUCN VITown Forest
0.81 km² overlap
Seaver Silver Lake Farm Trust (Eastside)
IUCN Not AssignedLake
0.78 km² overlap
Tenant Swamp
IUCN VLocal Conservation Area
0.77 km² overlap
Eaton
IUCN Not AssignedConservation Easement
0.77 km² overlap
Whippoorwill Farm West
IUCN Not AssignedConservation Easement
0.72 km² overlap
Drummer Hill
IUCN VConservation Area
0.70 km² overlap
Birdsey and Michel
IUCN VWildlife Sanctuaries
0.68 km² overlap
Pullen
IUCN Not AssignedConservation Easement
0.57 km² overlap
Perry Farm II - Richmond
IUCN Not AssignedConservation Easement
0.52 km² overlap
Brooks
IUCN Not AssignedEasement
0.51 km² overlap
Ridgehill Farm
IUCN Not AssignedConservation Easement
0.49 km² overlap
Kensan Devan
IUCN Not AssignedConservation Easement
0.49 km² overlap
Private Conservation
0.46 km² overlap
Perry Farm III - Swanzey
IUCN Not AssignedConservation Easement
0.43 km² overlap
Perry Farm I - Swanzey
IUCN Not AssignedConservation Easement
0.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 521 distinct species · 441 446 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 Ashuelot River : 27 espèces reliées par 89 interactions GloBI sur 4 types (connectance 13.4%, 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°
6,5°C
Annual rain
1 114mm
Moisture idx (CMI)
0,16
Runoff
616mm/an
PET
929mm
AET
750mm
Mean slope
5,8°
Water table
484cm
Forest
98%
Crops
3%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)