HydroBASINS lev08 watershed · #7080555310
Bassin de Antietam Creek
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 : Adams, Franklin, Frederick, Jefferson, Washington
Sub-basin area
749,2km²
Upstream area
749,3km²
Discharge
10,57m³/s
Mean elev.
241m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- Washington479.3 km²63.9% of basin
- Franklin253.9 km²33.9% of basin
- Adams12.5 km²1.7% of basin
- 4.2 km²0.6% of basin
- Jefferson0.0 km²0.0% of basin
20 intersecting protected areas
South Mountain
IUCN VState Park
22.67 km² overlap
Greenbrier
IUCN IIIState Park
5.42 km² overlap
Meeting Of The Pines
IUCN VINatural Area
1.06 km² overlap
Washington Monument
IUCN IIIState Park
0.65 km² overlap
Catoctin Mountain
IUCN VPark
0.48 km² overlap
Washington County, PA easem
IUCN Not AssignedConservation Easement
0.28 km² overlap
National Historical Park
0.24 km² overlap
Pen Mar
IUCN IIILocal Park
0.16 km² overlap
Mount Briar
IUCN IIIWetlands Preserve
0.13 km² overlap
11 more protected areassorted by overlap area
Maryland Environmental Trust Easement #127
IUCN Not AssignedEasement
0.11 km² overlap
South Mountain State Park
IUCN IIIState Park
0.11 km² overlap
Beartown Woods
IUCN VINatural Area
0.11 km² overlap
Mont Alto
IUCN IIIState Park
0.10 km² overlap
Maryland Environmental Trust Easement #25
IUCN Not AssignedEasement
0.06 km² overlap
Maryland Environmental Trust Easement #129
IUCN Not AssignedEasement
0.04 km² overlap
Maryland Environmental Trust Easement #126
IUCN Not AssignedEasement
0.04 km² overlap
Maryland Environmental Trust Easement #128
IUCN Not AssignedEasement
0.03 km² overlap
Maryland Environmental Trust Easement #26
IUCN Not AssignedEasement
0.01 km² overlap
Antietam Academy
IUCN Not AssignedConservation Easement
0.00 km² overlap
Pen Mar
IUCN IIILocal Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 410 distinct species · 345 112 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Antietam Creek : 26 espèces reliées par 78 interactions GloBI sur 4 types (connectance 10.5%, 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°
11,0°C
Annual rain
1 029mm
Moisture idx (CMI)
-0,04
Runoff
446mm/an
PET
1 077mm
AET
811mm
Mean slope
3,8°
Water table
206cm
Forest
52%
Crops
26%
Urban
10%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)