HydroBASINS lev08 watershed · #7080519270
Bassin de West Branch Susquehanna 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 9 administrative regions : Centre, Clinton, Columbia, Lycoming, Montour +4
Sub-basin area
2 046,4km²
Upstream area
18 035,4km²
Discharge
342,19m³/s
Mean elev.
294m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lycoming Creek1369 km²
- Bassin de Loyalsock Creek1276 km²
9 dept-equivalent regions (GADM L2)
- 708.3 km²34.6% of basin
- Union578.4 km²28.2% of basin
- 277.3 km²13.5% of basin
- 207.5 km²10.1% of basin
- Sullivan186.1 km²9.1% of basin
- Columbia51.3 km²2.5% of basin
- 33.6 km²1.6% of basin
- 4.3 km²0.2% of basin
1 moreFull L2 list
- Clinton2.3 km² · 0.1%
20 intersecting protected areas
The Hook
IUCN VINatural Area
16.14 km² overlap
Raymond B. Winter
IUCN IIIState Park
2.68 km² overlap
Halfway Run
IUCN VINatural Area
1.59 km² overlap
Private Conservation
1.54 km² overlap
Gross Living Trust
IUCN Not AssignedConservation Easement
1.11 km² overlap
Dale/Engle/Walker
IUCN Not AssignedConservation Easement
0.56 km² overlap
Milton
IUCN IIIState Park
0.55 km² overlap
Central Builders-Montandon Marsh
IUCN Not AssignedConservation Easement
0.34 km² overlap
Shikellamy
IUCN IIIState Park
0.30 km² overlap
11 more protected areassorted by overlap area
Fletcher
IUCN Not AssignedConservation Easement
0.17 km² overlap
Abrahamson-McDiffett-Burnham
IUCN Not AssignedConservation Easement
0.16 km² overlap
Reserve Program
0.14 km² overlap
Belles
IUCN Not AssignedConservation Easement
0.13 km² overlap
Agricultural Conservation Easement Program - Wetland Reserve Easements (ACEP-WRE), Montour, PA
IUCN VConservation Easement
0.13 km² overlap
Reserve Program
0.10 km² overlap
Marvin
IUCN Not AssignedConservation Easement
0.06 km² overlap
Reserve Program
0.05 km² overlap
Reserve Program
0.04 km² overlap
Mccall's Dam
IUCN IIIState Park
0.03 km² overlap
Sand Bridge
IUCN IIIState Park
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 806 distinct species · 598 859 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 West Branch Susquehanna River : 22 espèces reliées par 74 interactions GloBI sur 3 types (connectance 14.0%, 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°
9,1°C
Annual rain
991mm
Moisture idx (CMI)
-0,02
Runoff
504mm/an
PET
1 015mm
AET
778mm
Mean slope
5,7°
Water table
326cm
Forest
75%
Crops
26%
Urban
2%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)