HydroBASINS lev08 watershed · #7080039210
Bassin de Saugus 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 : Essex, Middlesex, Suffolk
Sub-basin area
689,3km²
Upstream area
689,3km²
Discharge
5,42m³/s
Mean elev.
25m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- 363.9 km²52.7% of basin
- 222.1 km²32.2% of basin
- 44.7 km²6.5% of basin
30 intersecting protected areas
Marine Protected Area
15.80 km² overlap
Marine Protected Area
13.61 km² overlap
Beach
4.09 km² overlap
Wildlife Refuge
3.30 km² overlap
Ravenswood
IUCN Not AssignedPark
1.73 km² overlap
PCL
1.42 km² overlap
Tompson Street
IUCN VReservation
1.28 km² overlap
Greenbelt
0.93 km² overlap
Castle Neck River
IUCN Not AssignedConservation Easement
0.81 km² overlap
21 more protected areassorted by overlap area
Great Meadows
IUCN VLocal Conservation Area
0.71 km² overlap
Middlesex Fells
IUCN Not AssignedReservation
0.53 km² overlap
Soginese Creek CR
IUCN Not AssignedConservation Easement
0.52 km² overlap
Bartlett CR
IUCN Not AssignedConservation Easement
0.46 km² overlap
Goodale Orchard
IUCN Not AssignedConservation Easement
0.43 km² overlap
Long Hill Conservation Restriction
IUCN Not AssignedConservation Easement
0.42 km² overlap
Aggaziz Rock
IUCN VReservation
0.41 km² overlap
Whitemore Salt Marsh
IUCN VPCL
0.38 km² overlap
Warren Weld Woodland
IUCN VPCL
0.38 km² overlap
Great Misery Island
IUCN VReservation
0.29 km² overlap
Warren Farm CR
IUCN Not AssignedConservation Easement
0.28 km² overlap
Mclean Hospital
IUCN VOpen Space
0.28 km² overlap
Curlew Cove CR
IUCN Not AssignedConservation Easement
0.28 km² overlap
Stavros
IUCN Not AssignedReservation
0.26 km² overlap
Mount Ann
IUCN VPark
0.25 km² overlap
Graves Beach CR
IUCN Not AssignedBeach
0.20 km² overlap
Conservation Area
0.19 km² overlap
Cedar Swamp
IUCN VConservation Area
0.19 km² overlap
Private Conservation
0.18 km² overlap
Wingaersheek Uplands
IUCN VPCL
0.17 km² overlap
Means
IUCN Not AssignedConservation Easement
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 234 distinct species · 5 126 673 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 Saugus River : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 65 interactions GloBI sur 3 types (connectance 9.8%, filtre Serrano α=0.2). 8 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°
9,5°C
Annual rain
1 143mm
Moisture idx (CMI)
0,17
Runoff
817mm/an
PET
944mm
AET
745mm
Mean slope
1,8°
Water table
106cm
Forest
40%
Crops
3%
Urban
71%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)