HydroBASINS lev08 watershed · #7080366190
Bassin de Allagash 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 : Aroostook, Piscataquis
Sub-basin area
567,8km²
Upstream area
1 128km²
Discharge
20,82m³/s
Mean elev.
346m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
2 dept-equivalent regions (GADM L2)
- 369.1 km²64.8% of basin
- 200.1 km²35.2% of basin
1 intersecting protected areas
Wilderness
16.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
288 distinct species · 3 802 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 Allagash River : 22 espèces reliées par 66 interactions GloBI sur 4 types (connectance 12.5%, 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°
3,1°C
Annual rain
985mm
Moisture idx (CMI)
0,23
Runoff
605mm/an
PET
762mm
AET
637mm
Mean slope
3,2°
Water table
125cm
Forest
91%
Crops
1%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)