HydroBASINS lev08 watershed · #7080041410
Bassin de Accotink 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 6 administrative regions : Alexandria, Arlington, District of Columbia, Fairfax, Fairfax City +1
Sub-basin area
550,6km²
Upstream area
550,6km²
Discharge
0,85m³/s
Mean elev.
66m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 437.2 km²79.3% of basin
- 40.6 km²7.4% of basin
- 37.4 km²6.8% of basin
- 14.0 km²2.5% of basin
- 5.1 km²0.9% of basin
- District of ColumbiaDistrict of Columbia · United States0.1 km²0.0% of basin
18 intersecting protected areas
Mason Neck
IUCN IIIState Park
7.48 km² overlap
Huntley Meadows
IUCN IIICounty Park
6.00 km² overlap
Elizabeth Hartwell Mason Neck
IUCN Not AssignedNational Wildlife Refuge
5.98 km² overlap
Accotink Stream Valley
IUCN IIIPark
3.30 km² overlap
Pohick Stream Valley
IUCN IIIPark
3.28 km² overlap
Middle Run Stream Valley
IUCN IIIPark
0.85 km² overlap
Long Branch Stream Valley
IUCN IIIPark
0.64 km² overlap
Holmes Run Stream Valley
IUCN IIIPark
0.54 km² overlap
Dogue Creek Stream Valley
IUCN IIIPark
0.33 km² overlap
9 more protected areassorted by overlap area
Backlick Stream Valley
IUCN IIIPark
0.31 km² overlap
Indian Run Stream Valley
IUCN IIIPark
0.26 km² overlap
Turkeycock Run Stream Valley
IUCN IIIPark
0.26 km² overlap
Fairfax County
IUCN Not AssignedEasement
0.12 km² overlap
McPherson Donation
IUCN IIILocal Park
0.08 km² overlap
Paul Springs Stream Valley
IUCN IIIPark
0.08 km² overlap
King West Swim
IUCN Not AssignedClub
0.03 km² overlap
Unknown
IUCN VPark
0.02 km² overlap
Dogue Creek Stream Valley
IUCN IIILocal Park
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 793 distinct species · 3 215 466 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Accotink Creek : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 79 interactions GloBI sur 4 types (connectance 11.2%, filtre Serrano α=0.2). 12 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°
12,9°C
Annual rain
1 013mm
Moisture idx (CMI)
-0,10
Runoff
437mm/an
PET
1 124mm
AET
824mm
Mean slope
1,8°
Water table
123cm
Forest
32%
Crops
1%
Urban
84%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)