HydroBASINS lev08 watershed · #7080064850
Bassin de Sampawams Creek
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 1 administrative regions : Suffolk
Sub-basin area
481,2km²
Upstream area
481,2km²
Discharge
9,56m³/s
Mean elev.
25m
Administrative coverage
1 dept-equivalent regions (GADM L2)
- SuffolkNew York · United States469.8 km²97.5% of basin
30 intersecting protected areas
Heckscher State Park
IUCN IVMarine Protected Area
6.33 km² overlap
Preserve
2.78 km² overlap
Marine Protected Area
1.40 km² overlap
Wertheim
IUCN IVNational Wildlife Refuge
1.38 km² overlap
Wetlands
1.01 km² overlap
Marine Protected Area
0.86 km² overlap
Seatuck
IUCN IVNational Wildlife Refuge
0.86 km² overlap
Wetlands
0.75 km² overlap
Suffolk County Lands
IUCN VLocal Conservation Area
0.70 km² overlap
21 more protected areassorted by overlap area
Wetlands
0.56 km² overlap
Wetlands
0.54 km² overlap
New York
IUCN VState Lands
0.52 km² overlap
Thorne
IUCN VPreserve
0.41 km² overlap
Wetlands
0.40 km² overlap
Wetlands
0.33 km² overlap
Wetlands
0.29 km² overlap
Wetlands
0.23 km² overlap
Open Space
IUCN VLocal Conservation Area
0.22 km² overlap
Wetlands
0.13 km² overlap
Wetlands
0.12 km² overlap
Hollins
IUCN VPreserve
0.12 km² overlap
Atlantic Ocean Beaches
IUCN VBeach
0.11 km² overlap
Wetlands
0.08 km² overlap
Casamento
IUCN VPark
0.06 km² overlap
Orr
IUCN VPreserve
0.06 km² overlap
Marine Protected Area
0.05 km² overlap
Finlay-Wolf
IUCN VPond
0.04 km² overlap
Fire Island
IUCN VNational Seashore
0.03 km² overlap
Islip Town Lands
IUCN VLocal Conservation Area
0.03 km² overlap
Brookhaven Town Lands
IUCN VLocal Conservation Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 247 distinct species · 863 797 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Sampawams Creek : 27 espèces reliées par 73 interactions GloBI sur 4 types (connectance 11.6%, filtre Serrano α=0.2). 9 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°
11,1°C
Annual rain
1 152mm
Moisture idx (CMI)
0,18
Runoff
779mm/an
PET
940mm
AET
781mm
Mean slope
0,5°
Water table
52cm
Forest
47%
Crops
1%
Urban
93%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)