HydroBASINS lev08 watershed · #7080559650
Bassin de Catoctin 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 4 administrative regions : Frederick, Jefferson, Loudoun, Washington
Sub-basin area
849,8km²
Upstream area
25 149,1km²
Discharge
290,14m³/s
Mean elev.
194m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Shenandoah River967 km²
- Bassin de Potomac River101 km²
4 dept-equivalent regions (GADM L2)
- 439.5 km²51.7% of basin
- 368.4 km²43.3% of basin
- Washington42.3 km²5.0% of basin
- Jefferson0.5 km²0.1% of basin
24 intersecting protected areas
South Mountain
IUCN VState Park
14.19 km² overlap
National Historical Park
5.79 km² overlap
DNR
IUCN Not AssignedConservation Easement
1.61 km² overlap
Frederick
IUCN VMunicipal Forest
1.46 km² overlap
Gathland
IUCN IIIState Park
0.55 km² overlap
Frederick County, VA easem
IUCN Not AssignedConservation Easement
0.46 km² overlap
Maryland Environmental Trust Easement #24
IUCN Not AssignedEasement
0.42 km² overlap
Ridenour Swamp
IUCN VHeritage Conservation
0.31 km² overlap
Middleton Watershed
IUCN IIIWatershed
0.22 km² overlap
15 more protected areassorted by overlap area
Private Conservation Land
0.20 km² overlap
South Mountain State Park
IUCN IIIState Park
0.18 km² overlap
Gravel Hill Swamp
IUCN VHeritage Conservation
0.15 km² overlap
Goose Creek
IUCN VConservation Easement
0.12 km² overlap
Washington Monument
IUCN IIIState Park
0.10 km² overlap
Maryland Environmental Trust Easement #41
IUCN Not AssignedEasement
0.07 km² overlap
Maryland Forest Conservation Act Easements
IUCN Not AssignedEasement
0.05 km² overlap
Greenbrier
IUCN IIIState Park
0.03 km² overlap
Maryland Environmental Trust Easement #76
IUCN Not AssignedEasement
0.03 km² overlap
South Mountain State Park -
IUCN IIIBattlefield
0.03 km² overlap
St.Joseph's Roman Catholic Archbishop Of Baltimore
IUCN Not AssignedConservation Easement
0.02 km² overlap
Carroll Manor Recreation Council
IUCN Not AssignedRecreation
0.02 km² overlap
Demiray Property
IUCN Not AssignedConservation Easement
0.02 km² overlap
Myersville, MD easem
IUCN Not AssignedConservation Easement
0.01 km² overlap
Mifflin County, PA easem
IUCN Not AssignedConservation Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 094 distinct species · 483 679 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 Catoctin Creek : 30 espèces reliées par 87 interactions GloBI sur 5 types (connectance 10.6%, 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°
11,5°C
Annual rain
1 011mm
Moisture idx (CMI)
-0,08
Runoff
439mm/an
PET
1 102mm
AET
818mm
Mean slope
4,3°
Water table
292cm
Forest
43%
Crops
31%
Urban
2%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)