HydroBASINS lev08 watershed · #7080454700
Bassin de Winnipesaukee 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 5 administrative regions : Belknap, Carroll, Grafton, Merrimack, Strafford
Sub-basin area
1 273,5km²
Upstream area
1 273,6km²
Discharge
27,64m³/s
Mean elev.
224m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 699.1 km²54.8% of basin
- Carroll443.9 km²34.8% of basin
- 79.1 km²6.2% of basin
- 49.0 km²3.8% of basin
- 4.9 km²0.4% of basin
30 intersecting protected areas
Natural Area
13.43 km² overlap
Dane (Red Hill)
IUCN VPrivate Conservation
5.33 km² overlap
Forest
4.86 km² overlap
Private Conservation
1.41 km² overlap
Beaver Brook
IUCN VConservation Easement
1.27 km² overlap
Warren Brook
IUCN Not AssignedConservation Easement
0.89 km² overlap
Garland
IUCN VPond
0.81 km² overlap
Andrew Sanborn Farm
IUCN VConservation Land
0.69 km² overlap
Cotton-Hurd
IUCN VPreserve
0.63 km² overlap
21 more protected areassorted by overlap area
Muehlke
IUCN Not AssignedConservation Easement
0.60 km² overlap
Cann Family/MMRG/Split Rock Conservation
IUCN Not AssignedConservation Easement
0.59 km² overlap
Stonedam Island
IUCN VNatural Area
0.57 km² overlap
Cooper Cedar Woods
IUCN VPCL
0.54 km² overlap
Private Conservation
0.47 km² overlap
Unsworth
IUCN VPreserve
0.46 km² overlap
Rattlesnake Island #1
IUCN VPrivate Conservation
0.43 km² overlap
Stamp Act Island
IUCN VPreserve
0.43 km² overlap
Castle in the Clouds
IUCN VPrivate Conservation
0.39 km² overlap
Merrymeeting Marsh
IUCN VWildlife Management Area
0.37 km² overlap
Conde - Bean Hill Farm
IUCN Not AssignedConservation Easement
0.36 km² overlap
Knowles Pond
IUCN VConservation Area
0.34 km² overlap
Piper Mountain
IUCN VConservation Area
0.34 km² overlap
Private Conservation
0.33 km² overlap
Reserve Program
0.30 km² overlap
Open Space
0.29 km² overlap
Private Conservation
0.27 km² overlap
Lakes Business
IUCN Not AssignedPark
0.22 km² overlap
Roger Williams Harris
IUCN VNatural Area
0.21 km² overlap
Pop's Woods
IUCN VILocal Resource Management Area
0.19 km² overlap
Tioga Ridge
IUCN VOpen Space
0.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 214 distinct species · 286 008 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Winnipesaukee River : 28 espèces reliées par 97 interactions GloBI sur 4 types (connectance 13.1%, 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°
6,3°C
Annual rain
1 127mm
Moisture idx (CMI)
0,16
Runoff
792mm/an
PET
940mm
AET
745mm
Mean slope
4,2°
Water table
239cm
Forest
77%
Crops
2%
Urban
2%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)