HydroBASINS lev08 watershed · #7080550230
Bassin de Potomac 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 6 administrative regions : Allegany, Bedford, Fulton, Hampshire, Morgan +1
Sub-basin area
1 354,9km²
Upstream area
8 708,3km²
Discharge
105,79m³/s
Mean elev.
349m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
6 dept-equivalent regions (GADM L2)
- 431.0 km²31.8% of basin
- 425.3 km²31.4% of basin
- Hampshire302.5 km²22.3% of basin
- Morgan104.5 km²7.7% of basin
- Fulton46.7 km²3.4% of basin
- Washington46.3 km²3.4% of basin
25 intersecting protected areas
Martin Hill
IUCN VIWild Area
46.52 km² overlap
Woodmont
IUCN VNatural Resource Management Area
12.14 km² overlap
National Historical Park
8.90 km² overlap
Sweet Root
IUCN VINatural Area
5.63 km² overlap
Sideling Hill
IUCN VWildlife Management Area
3.22 km² overlap
Private Conservation Land
3.13 km² overlap
Pine Ridge
IUCN VINatural Area
2.31 km² overlap
Aaron Straus
IUCN VHeritage Conservation
2.00 km² overlap
Turkey Camp Shale Barren
IUCN VHeritage Conservation
1.52 km² overlap
16 more protected areassorted by overlap area
Eidolon
IUCN VPreserve
1.48 km² overlap
Maryland Environmental Trust Easement #6
IUCN Not AssignedEasement
0.57 km² overlap
Sideling Hill Creek
IUCN VPrivate Conservation
0.48 km² overlap
Sugar Hollow
IUCN VHeritage Conservation
0.44 km² overlap
Maryland Environmental Trust Easement #39
IUCN Not AssignedEasement
0.40 km² overlap
Selinger Marsh Fee
IUCN VPrivate Conservation Land
0.33 km² overlap
Sideling Hill Creek
IUCN VPrivate Conservation
0.27 km² overlap
Sideling Hill Creek
IUCN VPrivate Conservation
0.27 km² overlap
Easement
0.16 km² overlap
Watershed
0.14 km² overlap
Heritage Conservation
0.13 km² overlap
Allegany Forests Fee
IUCN VForest
0.12 km² overlap
Sideling Hill
IUCN Not AssignedConservation Easement
0.03 km² overlap
Washington County, PA easem
IUCN Not AssignedConservation Easement
0.03 km² overlap
Evitts Mountain
IUCN VForest
0.00 km² overlap
Nathaniel Mountain
IUCN VWildlife Management Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 385 distinct species · 200 918 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 43 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 Potomac River : 34 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 71 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 9 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°
10,3°C
Annual rain
943mm
Moisture idx (CMI)
-0,13
Runoff
373mm/an
PET
1 092mm
AET
783mm
Mean slope
7,2°
Water table
413cm
Forest
100%
Crops
7%
Urban
0%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)