HydroBASINS lev08 watershed · #7080038980
Bassin de Sagadahoc 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 : Lincoln, Sagadahoc
Sub-basin area
139,3km²
Upstream area
24 591km²
Discharge
627,56m³/s
Mean elev.
31m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Kennebec River1900 km²
- Bassin de Androscoggin River709 km²
2 dept-equivalent regions (GADM L2)
- 108.4 km²77.7% of basin
- Lincoln18.0 km²12.9% of basin
15 intersecting protected areas
Preble (Dumdey)
IUCN Not AssignedEasement
0.54 km² overlap
Preserve
0.49 km² overlap
Forest
0.41 km² overlap
Thorne Head
IUCN Not AssignedPreserve
0.34 km² overlap
Lower Kennebec
IUCN VPrivate Conservation
0.25 km² overlap
Whiskeag Creek
IUCN VPreserve
0.21 km² overlap
Lower Kennebec - Kelt
IUCN VPrivate Conservation
0.11 km² overlap
King Chopps Creek
IUCN Not AssignedEasement
0.08 km² overlap
Merrymeeting Fields
IUCN VPreserve
0.07 km² overlap
6 more protected areassorted by overlap area
Sewall West
IUCN Not AssignedField
0.07 km² overlap
Thorne Head
IUCN Not AssignedPreserve
0.03 km² overlap
Sewall Trail Cor
IUCN Not AssignedTrail Corridor
0.02 km² overlap
Kelt-Varney Island
IUCN VPCL
0.02 km² overlap
Sewall Woods
IUCN VWatershed Protection Area
0.01 km² overlap
Hockomock Bay Farm
IUCN Not AssignedEasement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 290 distinct species · 92 462 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Sagadahoc River : 21 espèces reliées par 82 interactions GloBI sur 3 types (connectance 15.5%, filtre Serrano α=0.2). 12 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°
7,6°C
Annual rain
1 144mm
Moisture idx (CMI)
0,24
Runoff
916mm/an
PET
870mm
AET
700mm
Mean slope
2,6°
Water table
139cm
Forest
91%
Crops
1%
Urban
6%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)