HydroBASINS lev08 watershed · #7080393810
Bassin de West Branch Penobscot 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 : Penobscot, Piscataquis
Sub-basin area
1 353,1km²
Upstream area
4 297,9km²
Discharge
80,93m³/s
Mean elev.
355m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de West Branch Penobscot River1014 km²
- Bassin de Loon Stream726 km²
2 dept-equivalent regions (GADM L2)
- 1348.6 km²99.4% of basin
- 7.8 km²0.6% of basin
7 intersecting protected areas
Katahdin
IUCN Not AssignedForest
369.57 km² overlap
Baxter
IUCN VState Park
211.47 km² overlap
Private Conservation Land
126.64 km² overlap
Nahmakanta Unit
IUCN VEcological Reserve
16.81 km² overlap
Gero Island
IUCN VEcological Reserve
8.74 km² overlap
Trout Mountain
IUCN VPrivate Conservation Land
3.14 km² overlap
Baxter State Park, Appalachian
IUCN IIITrail Corridor
0.65 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 538 distinct species · 71 283 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 44 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 West Branch Penobscot River : 32 espèces reliées par 88 interactions GloBI sur 3 types (connectance 9.3%, 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°
3,5°C
Annual rain
1 032mm
Moisture idx (CMI)
0,23
Runoff
692mm/an
PET
789mm
AET
657mm
Mean slope
4,0°
Water table
158cm
Forest
83%
Crops
0%
Urban
0%
Protected
26%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)