HydroBASINS lev08 watershed · #7080039600
Bassin de Pattagansett 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 2 administrative regions : Middlesex, New London
Sub-basin area
383,6km²
Upstream area
383,6km²
Discharge
7,97m³/s
Mean elev.
59m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- 365.5 km²95.2% of basin
- Middlesex1.7 km²0.5% of basin
30 intersecting protected areas
Great Island Marshes
IUCN VEasement
2.66 km² overlap
Marine Protected Area
2.29 km² overlap
Rocky Neck
IUCN IIIState Park
2.11 km² overlap
Natural Area
2.08 km² overlap
Harkness Memorial
IUCN IIIState Park
1.53 km² overlap
Marine Protected Area
1.34 km² overlap
Morgan R. Chaney
IUCN VSanctuary
0.90 km² overlap
Private Conservation
0.78 km² overlap
Private Conservation
0.68 km² overlap
21 more protected areassorted by overlap area
Camp Oakdale
IUCN VRecreation Center
0.68 km² overlap
Private Conservation
0.48 km² overlap
Zemko
IUCN VWildlife Management Area
0.46 km² overlap
State Resource Management Area
0.42 km² overlap
Private Conservation
0.40 km² overlap
Open Space
0.36 km² overlap
Unknown
IUCN Not AssignedConservation Easement
0.35 km² overlap
Nature Preserve
0.30 km² overlap
Private Conservation
0.30 km² overlap
Burnham Brook
IUCN VPrivate Conservation Land
0.28 km² overlap
Private Conservation
0.25 km² overlap
Pilgrim Road
IUCN VPrivate Conservation
0.22 km² overlap
Wildlife Refuge
0.22 km² overlap
UNK145
IUCN Not AssignedUnknown
0.20 km² overlap
Nature Preserve
0.18 km² overlap
New London D.P.U.C. 1
IUCN Not AssignedLocal Other or Unknown
0.18 km² overlap
Great Island Marshes
IUCN VConservation Easement
0.18 km² overlap
Great Island Marshes
IUCN VEasement
0.17 km² overlap
New London D.P.U.C. 2
IUCN Not AssignedLocal Other or Unknown
0.15 km² overlap
State Resource Management Area
0.14 km² overlap
Scotch Cap Road
IUCN VPrivate Conservation
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 396 distinct species · 464 558 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 Pattagansett River : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 72 interactions GloBI sur 4 types (connectance 11.4%, 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°
9,9°C
Annual rain
1 222mm
Moisture idx (CMI)
0,23
Runoff
777mm/an
PET
946mm
AET
780mm
Mean slope
3,0°
Water table
308cm
Forest
93%
Crops
3%
Urban
20%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)