HydroBASINS lev08 watershed · #7080544250
Bassin de Schuylkill 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 5 administrative regions : Chester, Delaware, Gloucester, Montgomery, Philadelphia
Sub-basin area
738km²
Upstream area
5 128,1km²
Discharge
103,56m³/s
Mean elev.
81m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Schuylkill River1149 km²
- Bassin de Perkiomen Creek937 km²
5 dept-equivalent regions (GADM L2)
- Montgomery374.3 km²50.7% of basin
- 140.2 km²19.0% of basin
- Delaware122.1 km²16.5% of basin
- 102.1 km²13.8% of basin
- 0.1 km²0.0% of basin
30 intersecting protected areas
Valley Forge
IUCN IIINational Historical Park
12.38 km² overlap
Brandywine Conservancy
IUCN Not AssignedEasement
3.26 km² overlap
Norristown Farm Park
IUCN IIIState Park
2.77 km² overlap
Fort Washington
IUCN IIIState Park
2.04 km² overlap
Private Conservation
1.13 km² overlap
Gwynedd Preserve #3
IUCN Not AssignedPreserve
1.11 km² overlap
Watershed
0.79 km² overlap
Private Conservation
0.50 km² overlap
Armentrout
IUCN VPreserve
0.26 km² overlap
21 more protected areassorted by overlap area
Briar Hill
IUCN Not AssignedPreserve
0.25 km² overlap
Meadow Farm
IUCN VPreserve
0.18 km² overlap
Garden
0.16 km² overlap
Sharp's Woods
IUCN VPreserve
0.11 km² overlap
Private Conservation
0.10 km² overlap
Saunders Woods
IUCN VPreserve
0.10 km² overlap
Betz
IUCN Not AssignedConservation Easement
0.09 km² overlap
Preserve
0.09 km² overlap
Idlewild
IUCN VPreserve
0.08 km² overlap
Biddle Woods
IUCN VConservation Easement
0.08 km² overlap
Biddle Woods
IUCN VPreserve
0.07 km² overlap
Open Space
IUCN VLocal Conservation Area
0.06 km² overlap
Private Conservation
0.06 km² overlap
Audubon
IUCN VWildlife Sanctuary
0.04 km² overlap
Dodge Tract
IUCN VPreserve
0.03 km² overlap
Rocky Crest Memorial
IUCN VPreserve
0.02 km² overlap
Private Conservation
0.02 km² overlap
Waterloo Mills
IUCN VPreserve
0.02 km² overlap
National Wildlife Refuge
0.01 km² overlap
Historical Society
0.01 km² overlap
Gardens
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
8 272 distinct species · 4 050 058 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 Schuylkill River : 34 espèces reliées par 80 interactions GloBI sur 4 types (connectance 9.8%, filtre Serrano α=0.2). 7 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°
11,7°C
Annual rain
1 132mm
Moisture idx (CMI)
0,08
Runoff
644mm/an
PET
1 041mm
AET
835mm
Mean slope
2,4°
Water table
168cm
Forest
23%
Crops
2%
Urban
86%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)