HydroBASINS lev08 watershed · #7080485930
Bassin de Roeliff Jansen Kill
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 5 administrative regions : Berkshire, Columbia, Dutchess, Greene, Litchfield
Sub-basin area
629,3km²
Upstream area
629,3km²
Discharge
14,95m³/s
Mean elev.
222m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- ColumbiaNew York · United States457.9 km²72.7% of basin
- DutchessNew York · United States130.2 km²20.7% of basin
- 41.7 km²6.6% of basin
- 0.4 km²0.1% of basin
- GreeneNew York · United States0.0 km²0.0% of basin
19 intersecting protected areas
Mount Washington
IUCN VIState Forest
13.19 km² overlap
Alexander CR
IUCN Not AssignedConservation Easement
3.04 km² overlap
State Multiple Use Area
2.90 km² overlap
Pennyroyal CR
IUCN Not AssignedConservation Easement
2.11 km² overlap
Mount Everett State
IUCN VIReservation
1.52 km² overlap
New York
IUCN VState Lands
0.61 km² overlap
Mt. Darby WCE
IUCN Not AssignedConservation Easement
0.60 km² overlap
State Multiple Use Area
0.52 km² overlap
Drowned Lands Swamp
IUCN VConservation Area
0.45 km² overlap
10 more protected areassorted by overlap area
Mount Riga
IUCN VConservation Easement
0.43 km² overlap
Reserve Program
0.35 km² overlap
State Resource Management Area
0.21 km² overlap
Thompson Pond
IUCN VPreserve
0.16 km² overlap
Pennyroyal Cr
IUCN Not AssignedConservation Easement
0.15 km² overlap
Harlem Valley Rail
IUCN VTrail
0.07 km² overlap
Mt. Plantain WCE
IUCN Not AssignedConservation Easement
0.06 km² overlap
Reserve Program
0.04 km² overlap
Columbia Land Conservancy
IUCN Not AssignedEasement
0.03 km² overlap
Mount Washington
IUCN VIState Forest
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 830 distinct species · 277 141 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Roeliff Jansen Kill : 23 espèces reliées par 70 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 11 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°
8,1°C
Annual rain
1 099mm
Moisture idx (CMI)
0,10
Runoff
754mm/an
PET
983mm
AET
782mm
Mean slope
5,2°
Water table
312cm
Forest
97%
Crops
15%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)