HydroBASINS lev08 watershed · #7080039780
Bassin de Mianus 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
663,9km²
Upstream area
663,9km²
Discharge
2,99m³/s
Mean elev.
72m
Administrative coverage
3 dept-equivalent regions (GADM L2)
- Fairfield325.5 km²49.0% of basin
- WestchesterNew York · United States256.4 km²38.6% of basin
- BronxNew York · United States44.0 km²6.6% of basin
30 intersecting protected areas
Mianus River Gorge
IUCN VPrivate Conservation Land
2.32 km² overlap
Babcock
IUCN Not AssignedPreserve
1.18 km² overlap
Private Conservation
1.11 km² overlap
Mianus River State Park
IUCN IIIScenic Reserve
1.10 km² overlap
Wildlife Sanctuary
0.72 km² overlap
Garden
0.51 km² overlap
Stewart B. Mckinney
IUCN IVNational Wildlife Refuge
0.44 km² overlap
Marine Protected Area
0.44 km² overlap
Private Conservation
0.31 km² overlap
21 more protected areassorted by overlap area
Byram River Gorge
IUCN VPrivate Conservation Land
0.30 km² overlap
Leatherstocking N
IUCN VNature Trail
0.27 km² overlap
Piney Woods
IUCN VPrivate Conservation Land
0.25 km² overlap
Sidney Lanier
IUCN VIState Resource Management Area
0.23 km² overlap
Greenwich Land Trust 64
IUCN VPrivate Conservation
0.21 km² overlap
Preserve
0.19 km² overlap
Private Conservation
0.17 km² overlap
Gimbel
IUCN VSanctuary
0.16 km² overlap
Private Conservation
0.16 km² overlap
Byram River Gorge
IUCN VPrivate Conservation
0.15 km² overlap
Private Conservation
0.15 km² overlap
Seton Falls
IUCN VPark
0.14 km² overlap
Otter Creek
IUCN VPreserve
0.13 km² overlap
Unknown
IUCN Not AssignedConservation Easement
0.12 km² overlap
Westchester County Lands
IUCN VLocal Conservation Area
0.12 km² overlap
Grass Island
IUCN Not AssignedLocal Other or Unknown
0.11 km² overlap
New Canaan
IUCN Not AssignedNature Center
0.11 km² overlap
Dundee Woods
IUCN Not AssignedLocal Other or Unknown
0.10 km² overlap
Greenwich Land Trust 45
IUCN VPrivate Conservation
0.10 km² overlap
Sanctuary
0.10 km² overlap
Still
IUCN VPond
0.09 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
6 065 distinct species · 1 244 166 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Mianus River : 21 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 92 interactions GloBI sur 4 types (connectance 15.5%, filtre Serrano α=0.2). 14 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°
10,7°C
Annual rain
1 196mm
Moisture idx (CMI)
0,18
Runoff
788mm/an
PET
977mm
AET
808mm
Mean slope
2,3°
Water table
214cm
Forest
72%
Crops
1%
Urban
55%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)