HydroBASINS lev08 watershed · #7080039850
Bassin de Harlem 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 : Bronx, New York, Queens
Sub-basin area
66,8km²
Upstream area
66,8km²
Discharge
0,19m³/s
Mean elev.
18m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- New YorkNew York · United States38.5 km²57.6% of basin
- BronxNew York · United States22.5 km²33.7% of basin
- QueensNew York · United States0.0 km²0.0% of basin
5 intersecting protected areas
North Brother Island
IUCN VLocal Conservation Area
0.12 km² overlap
South Brother Island
IUCN VLocal Conservation Area
0.06 km² overlap
Jerome Slope
IUCN VLocal Conservation Area
0.00 km² overlap
Tudor City
IUCN Not AssignedEasement
0.00 km² overlap
Mill Rock
IUCN VPark
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 625 distinct species · 908 790 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Harlem River : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 145 interactions GloBI sur 4 types (connectance 15.3%, filtre Serrano α=0.2). 18 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°
12,0°C
Annual rain
1 138mm
Moisture idx (CMI)
0,16
Runoff
727mm/an
PET
952mm
AET
792mm
Mean slope
2,0°
Water table
130cm
Forest
1%
Crops
0%
Urban
100%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)