HydroBASINS lev08 watershed · #7080436030

Bassin de 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 3 administrative regions : Carroll, Coos, Grafton

2% lakePfafstetter: 73120094

Sub-basin area

1 043,6km²

Upstream area

1 043,6km²

Discharge

27,94m³/s

Mean elev.

515m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Connecticut River295 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

Grafton
New Hampshire · United States
902.0 km²
86.3% of basin
Coos
New Hampshire · United States
143.1 km²
13.7% of basin
Carroll
New Hampshire · United States
0.6 km²
0.1% of basin

17 intersecting protected areas

Pemigewasset
IUCN Ib
Wilderness
0.87 km² overlap
Troy Farm
IUCN Not Assigned
Conservation Easement
0.55 km² overlap
Wetlands Reserve Program (WRP), Grafton, NH
IUCN V
Reserve Program
0.46 km² overlap
Scotland Brook
IUCN V
Wildlife Sanctuary
0.37 km² overlap
Trustees Of Dartmouth College
IUCN V
College
0.28 km² overlap
Lackie Farm
IUCN Not Assigned
Conservation Easement
0.23 km² overlap
Reid, Helen E.
IUCN V
Conservation Easement
0.17 km² overlap
Great Gulf
IUCN Ib
Wilderness
0.11 km² overlap
Cushman
IUCN VI
State Forest
0.11 km² overlap

8 more protected areassorted by overlap area

Crawford Notch Property
IUCN V
PCL
0.07 km² overlap
Eisenhower Memorial Area
IUCN III
State Park
0.03 km² overlap
Mount Washington
IUCN III
State Park
0.02 km² overlap
Lost River
IUCN V
Reservation
0.02 km² overlap
Presidential Range-Dry River
IUCN Ib
Wilderness
0.02 km² overlap
Gale River
IUCN V
Easement
0.02 km² overlap
River Bend
IUCN V
Trail
0.01 km² overlap
River Bend
IUCN V
Trail
0.01 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

3 051 distinct species · 123 641 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 43 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Ammonoosuc River : 29 espèces reliées par 100 interactions GloBI sur 4 types (connectance 11.1%, filtre Serrano α=0.2). 14 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

100

Connectance

0.111

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

4,5°C

Annual rain

1 134mm

Moisture idx (CMI)

0,24

Runoff

858mm/an

PET

833mm

AET

702mm

Mean slope

8,5°

Water table

269cm

Forest

98%

Crops

Urban

Protected

15%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)