HydroBASINS lev08 watershed · #7080039840
Bassin de Bronx 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, Fairfield, Westchester
Sub-basin area
180,5km²
Upstream area
180,5km²
Discharge
4,33m³/s
Mean elev.
97m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- WestchesterNew York · United States145.7 km²80.6% of basin
- BronxNew York · United States28.6 km²15.8% of basin
- Fairfield6.3 km²3.5% of basin
22 intersecting protected areas
Meyer
IUCN VNature Preserve
0.85 km² overlap
Butler
IUCN VSanctuary
0.63 km² overlap
Sluder
IUCN VPreserve
0.38 km² overlap
Preserve
0.33 km² overlap
Byram River Gorge
IUCN VPrivate Conservation Land
0.19 km² overlap
Westchester County Lands
IUCN VLocal Conservation Area
0.13 km² overlap
New York City Watershed
IUCN Not AssignedConservation Easement
0.05 km² overlap
Steeple Chase Cons Area
IUCN VPrivate Conservation
0.03 km² overlap
Greenwich Land Trust 52
IUCN VPrivate Conservation
0.03 km² overlap
13 more protected areassorted by overlap area
Red Maple Swamp
IUCN VLocal Conservation Area
0.02 km² overlap
Private Conservation
0.01 km² overlap
Bato
IUCN VPrivate Conservation
0.01 km² overlap
Glazier Arboretum
IUCN VArboretum
0.01 km² overlap
Private Conservation
0.01 km² overlap
Private Conservation
0.01 km² overlap
Private Conservation
0.01 km² overlap
Private Conservation
0.00 km² overlap
UNK141
IUCN Not AssignedUnknown
0.00 km² overlap
John Sargent Woodland
IUCN VLocal Conservation Area
0.00 km² overlap
Greenwich Land Trust 47
IUCN VPrivate Conservation
0.00 km² overlap
Greenwich Land Trust 45
IUCN VPrivate Conservation
0.00 km² overlap
Greenwich Land Trust 46
IUCN VPrivate Conservation
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 315 distinct species · 528 212 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Bronx River : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 162 interactions GloBI sur 4 types (connectance 17.9%, filtre Serrano α=0.2). 19 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°
10,9°C
Annual rain
1 205mm
Moisture idx (CMI)
0,19
Runoff
761mm/an
PET
974mm
AET
811mm
Mean slope
3,4°
Water table
236cm
Forest
47%
Crops
1%
Urban
66%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)