HydroBASINS lev08 watershed · #7080507840
Bassin de Wallkill 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 2 administrative regions : Orange, Sussex
Sub-basin area
443,3km²
Upstream area
443,4km²
Discharge
8,99m³/s
Mean elev.
221m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 406.2 km²91.5% of basin
- OrangeNew York · United States37.7 km²8.5% of basin
30 intersecting protected areas
Wallkill River
IUCN IVNational Wildlife Refuge
23.60 km² overlap
Hamburg Mountain
IUCN VWildlife Management Area
12.57 km² overlap
Sparta Mountain
IUCN VWildlife Management Area
8.87 km² overlap
Weldon Brook
IUCN VWildlife Management Area
3.60 km² overlap
Stokes
IUCN VState Forest
2.42 km² overlap
Preserve
IUCN VPreserve
1.90 km² overlap
Pochuck Mountain
IUCN VState Forest
1.72 km² overlap
Pochuck Mountain
IUCN VState Conservation Area
1.66 km² overlap
Congleton
IUCN VPreserve
1.51 km² overlap
21 more protected areassorted by overlap area
Conservation Area
IUCN VConservation Area
1.48 km² overlap
Wallkill
IUCN VPreserve
1.43 km² overlap
Papakating Creek
IUCN VPreserve
1.28 km² overlap
Quarryville Brook
IUCN VPreserve
0.70 km² overlap
Blue Her
IUCN VWooded Lot
0.66 km² overlap
Mahlon Dickerson
IUCN VReservation
0.65 km² overlap
Wildcat Branch
IUCN VPreserve
0.60 km² overlap
Wetlands Reserve Program (WRP), Sussex, NJ
IUCN Not AssignedReserve Program
0.40 km² overlap
Njcf #023 / 642
IUCN Not AssignedConservation Easement
0.38 km² overlap
Conservation Easement
0.37 km² overlap
Sparta Mountain
IUCN VSanctuary
0.19 km² overlap
Sussex Hills
IUCN VPreserve
0.15 km² overlap
Sparta
IUCN VFields
0.11 km² overlap
Sterling Hill
IUCN VPreserve
0.09 km² overlap
Wetlands Reserve Program (WRP)
IUCN Not AssignedReserve Program
0.07 km² overlap
Elm Spring
IUCN VPreserve
0.05 km² overlap
West Mountain Estates
IUCN VPreserve
0.04 km² overlap
Highlands-Landsberger
IUCN VPrivate Conservation
0.04 km² overlap
Crooked Swamp Cave
IUCN VPreserve
0.02 km² overlap
Wallkill River
IUCN VNational Wildlife Refuge
0.00 km² overlap
Trail / ISTEA
IUCN IIIState Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 558 distinct species · 465 649 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 Wallkill River : 26 espèces reliées par 73 interactions GloBI sur 3 types (connectance 11.6%, 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°
9,0°C
Annual rain
1 167mm
Moisture idx (CMI)
0,13
Runoff
648mm/an
PET
1 010mm
AET
829mm
Mean slope
4,4°
Water table
311cm
Forest
98%
Crops
19%
Urban
7%
Protected
18%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)