HydroBASINS lev08 watershed · #7080424840
Bassin de Upper Ammonoosuc 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 : Coos, Essex
Sub-basin area
646,7km²
Upstream area
647,2km²
Discharge
20,38m³/s
Mean elev.
566m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 648.1 km²100.0% of basin
- Essex0.0 km²0.0% of basin
14 intersecting protected areas
Conservation Easement
4.28 km² overlap
Hedgehog Brook
IUCN VWildlife Management Area
2.28 km² overlap
Mt Kelsey
IUCN VWildlife Management Area
1.99 km² overlap
Percy Summer
IUCN VClub
1.69 km² overlap
Steady, George G.
IUCN VConservation Easement
1.09 km² overlap
Long Mountain
IUCN VState Conservation Area
1.01 km² overlap
Copperville
IUCN VForest
0.52 km² overlap
Kilkenny Matrix Fee
IUCN VPrivate Conservation Land
0.32 km² overlap
Private Conservation Land
0.28 km² overlap
5 more protected areassorted by overlap area
Kauffmann
IUCN VForest
0.26 km² overlap
Maidstone Bends
IUCN VPrivate Conservation Land
0.24 km² overlap
Preserve
0.11 km² overlap
Vickie Bunnell
IUCN VPreserve
0.04 km² overlap
Maidstone Bends
IUCN VPrivate Conservation Land
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 223 distinct species · 37 940 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 Upper Ammonoosuc River : 26 espèces reliées par 88 interactions GloBI sur 4 types (connectance 12.5%, 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°
3,7°C
Annual rain
1 160mm
Moisture idx (CMI)
0,29
Runoff
987mm/an
PET
807mm
AET
700mm
Mean slope
8,5°
Water table
252cm
Forest
100%
Crops
1%
Urban
0%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)