HydroBASINS lev08 watershed · #7080557610
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 2 administrative regions : Jefferson, Washington
Sub-basin area
100,6km²
Upstream area
16 385,3km²
Discharge
194,3m³/s
Mean elev.
159m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Antietam Creek749 km²
- Bassin de Potomac River240 km²
2 dept-equivalent regions (GADM L2)
- Jefferson69.9 km²69.4% of basin
- Washington30.8 km²30.6% of basin
2 intersecting protected areas
National Historical Park
3.99 km² overlap
Wildlife Santuary
0.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
961 distinct species · 74 892 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 27 espèces reliées par 79 interactions GloBI sur 5 types (connectance 10.1%, filtre Serrano α=0.2). 13 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°
11,6°C
Annual rain
984mm
Moisture idx (CMI)
-0,12
Runoff
416mm/an
PET
1 116mm
AET
814mm
Mean slope
3,7°
Water table
213cm
Forest
59%
Crops
31%
Urban
0%
Protected
6%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)