HydroBASINS lev08 watershed · #7080492020
Bassin de East Branch Delaware 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 4 administrative regions : Delaware, Greene, Sullivan, Ulster
Sub-basin area
2 156,5km²
Upstream area
2 156,6km²
Discharge
45,74m³/s
Mean elev.
619m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- DelawareNew York · United States1469.5 km²68.0% of basin
- SullivanNew York · United States383.6 km²17.8% of basin
- UlsterNew York · United States248.1 km²11.5% of basin
- GreeneNew York · United States58.6 km²2.7% of basin
30 intersecting protected areas
Delaware
IUCN IbWild Forest
119.72 km² overlap
Big Indian
IUCN IbWilderness
72.13 km² overlap
Balsam Lake Mountain
IUCN IbWild Forest
55.14 km² overlap
Willowemoc
IUCN VWild Forest
54.43 km² overlap
Dry Brook Ridge
IUCN IbWild Forest
37.93 km² overlap
Bear Spring Mountain
IUCN VWildlife Management Area
25.88 km² overlap
Beaverkill Arcadia
IUCN VPrivate Conservation
11.69 km² overlap
Halcott Mountain
IUCN IbWild Forest
7.59 km² overlap
Bearpen Mountain
IUCN IbState Forest
3.27 km² overlap
21 more protected areassorted by overlap area
Kerryville
IUCN IbState Forest
2.77 km² overlap
Mongaup Pond Campground
IUCN VCampground
2.76 km² overlap
Halcott
IUCN VForest Preserve
2.65 km² overlap
Murphy Hill
IUCN IbState Forest
2.43 km² overlap
NYC DEP-Public Access Area per Cooperative Agreement
IUCN Not AssignedAccess Area
2.29 km² overlap
NYC DEP-Public Access Area per Cooperative Agreement 2
IUCN Not AssignedAccess Area
1.76 km² overlap
Colchester
IUCN VForest Preserve
1.66 km² overlap
Debruce Environ
IUCN VState Forest Preserve
1.52 km² overlap
Colchester State
IUCN VForest Preserve
1.50 km² overlap
New York
IUCN VState Lands
1.14 km² overlap
Beaverkill Campground
IUCN VCampground
1.08 km² overlap
New York City Watershed
IUCN Not AssignedConservation Easement
0.91 km² overlap
NYC DEP-Public Access Area per Cooperative Agreement 3
IUCN Not AssignedAccess Area
0.75 km² overlap
Andes State
IUCN VForest Preserve
0.41 km² overlap
State Conservation Area
0.35 km² overlap
Catskill Mountains
IUCN VState Conservation Area
0.33 km² overlap
State
IUCN VIReforestation Area
0.30 km² overlap
Wolf Hollow
IUCN VWildlife Management Area
0.21 km² overlap
Middletown State
IUCN VForest Preserve
0.19 km² overlap
Tompkins
IUCN VForest Preserve
0.04 km² overlap
Cherry Ridge
IUCN VWild Forest
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 550 distinct species · 129 658 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 East Branch Delaware River : 31 espèces reliées par 84 interactions GloBI sur 4 types (connectance 10.2%, filtre Serrano α=0.2). 10 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°
6,0°C
Annual rain
1 170mm
Moisture idx (CMI)
0,25
Runoff
668mm/an
PET
873mm
AET
760mm
Mean slope
10,7°
Water table
534cm
Forest
87%
Crops
4%
Urban
0%
Protected
17%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)