HydroBASINS lev08 watershed · #7080039620
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 5 administrative regions : Hartford, Middlesex, New Haven, New London, Tolland
Sub-basin area
2 018,6km²
Upstream area
28 999,2km²
Discharge
583,52m³/s
Mean elev.
96m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Westfield River2073 km²
- Bassin de West Branch Farmington River1532 km²
5 dept-equivalent regions (GADM L2)
- Middlesex784.4 km²38.8% of basin
- 783.0 km²38.7% of basin
- 221.2 km²10.9% of basin
- 216.8 km²10.7% of basin
- 16.1 km²0.8% of basin
30 intersecting protected areas
Burnham Brook
IUCN VPrivate Conservation Land
5.96 km² overlap
Wildlife Refuge
3.72 km² overlap
Hurd
IUCN IIIState Park
3.62 km² overlap
Burnham Brook
IUCN VEasement
3.16 km² overlap
Open Space
IUCN VLocal Conservation Area
2.93 km² overlap
Devils Hopyard
IUCN IIIState Park
2.56 km² overlap
Ragged Mountain Memorial
IUCN Not AssignedPreserve
2.44 km² overlap
Easement
2.38 km² overlap
Marine Protected Area
2.28 km² overlap
21 more protected areassorted by overlap area
Conservation Easement
2.27 km² overlap
Selden Neck Island
IUCN IIIState Park
2.26 km² overlap
Penwood
IUCN IIIState Park
2.04 km² overlap
Tankerhoosen
IUCN VWildlife Management Area
2.02 km² overlap
George D. Seymour State Park
IUCN IIIScenic Reserve
1.54 km² overlap
Private Conservation Land
1.42 km² overlap
Timberlin
IUCN VPark
1.36 km² overlap
Millers Pond State Park
IUCN IIIScenic Reserve
1.19 km² overlap
Kongscut Mountain
IUCN VConservation Easement
1.14 km² overlap
Unknown
IUCN Not AssignedConservation Easement
1.12 km² overlap
Unknown
IUCN Not AssignedConservation Easement
1.06 km² overlap
Zemko
IUCN VWildlife Management Area
1.05 km² overlap
Selden Creek
IUCN VPrivate Conservation Land
0.97 km² overlap
Matianuck Sand Dunes
IUCN VNatural Area Preserve
0.95 km² overlap
Case Mountain
IUCN Not AssignedLocal Other or Unknown
0.93 km² overlap
Conservation Easement
0.86 km² overlap
Farm and Ranch Lands Protection Program (FRPP)
IUCN Not AssignedConservation Easement
0.84 km² overlap
State of Connecticut 61
IUCN VIState Resource Management Area
0.76 km² overlap
Hamburg Cove
IUCN VPrivate Conservation Land
0.75 km² overlap
Gay City
IUCN IIIState Park
0.75 km² overlap
Wadsworth Falls
IUCN IIIState Park
0.72 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 615 distinct species · 1 835 694 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 : 25 espèces reliées par 73 interactions GloBI sur 4 types (connectance 10.4%, filtre Serrano α=0.2). 13 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°
9,6°C
Annual rain
1 211mm
Moisture idx (CMI)
0,19
Runoff
841mm/an
PET
976mm
AET
798mm
Mean slope
3,3°
Water table
329cm
Forest
87%
Crops
5%
Urban
32%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)