HydroBASINS lev08 watershed · #7080611080
Bassin de Roanoke 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 8 administrative regions : Bedford, Botetourt, Floyd, Franklin, Montgomery +3
Sub-basin area
1 880,3km²
Upstream area
1 880,4km²
Discharge
22,78m³/s
Mean elev.
486m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
8 dept-equivalent regions (GADM L2)
- 575.1 km²30.6% of basin
- Montgomery491.6 km²26.1% of basin
- Bedford239.3 km²12.7% of basin
- 175.0 km²9.3% of basin
- Franklin157.8 km²8.4% of basin
- 111.8 km²5.9% of basin
- Floyd93.8 km²5.0% of basin
- Salem36.8 km²2.0% of basin
23 intersecting protected areas
Havens
IUCN VWildlife Management Area
37.95 km² overlap
The Nature Conservancy
IUCN VEasement
16.44 km² overlap
Bottom Creek Gorge
IUCN VPrivate Conservation Land
6.94 km² overlap
Poor Mountain
IUCN VState Natural Area Preserve
5.37 km² overlap
Smith Mountain Lake
IUCN IIIState Park
4.71 km² overlap
Pedlar Hills Glades
IUCN VState Natural Area Preserve
3.17 km² overlap
Cedar Island Macrosite
IUCN VPrivate Conservation Land
2.91 km² overlap
Pedlar Hills Glades
IUCN VState Natural Area Preserve
1.64 km² overlap
Read Mountain
IUCN VPreserve
0.99 km² overlap
14 more protected areassorted by overlap area
Private Conservation Land
0.98 km² overlap
Mill Creek Springs
IUCN VNatural Area Preserve
0.98 km² overlap
Sweet Springs
IUCN VState Natural Area Preserve
0.95 km² overlap
Roa-Vof-3975
IUCN Not AssignedConservation Easement
0.65 km² overlap
Ironto Shale Barren
IUCN VPrivate Conservation Land
0.25 km² overlap
Sugar Loaf Mountain
IUCN VNature Preserve
0.20 km² overlap
Bottom Creek Gorge
IUCN VPrivate Conservation Land
0.13 km² overlap
Brush Mountain
IUCN IbWilderness
0.07 km² overlap
Wolf Creek
IUCN VGreenway
0.05 km² overlap
North Fork Roanoke River
IUCN VEasement
0.02 km² overlap
Hanging Rock
IUCN VGreenway
0.01 km² overlap
Vrfa Land Donation
IUCN VLocal Conservation Area
0.01 km² overlap
Walnut Hill
IUCN VPrivate Conservation Land
0.01 km² overlap
Flo-Vof-4017
IUCN Not AssignedConservation Easement
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 699 distinct species · 939 348 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Roanoke River : 23 espèces reliées par 81 interactions GloBI sur 4 types (connectance 12.9%, 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°
12,3°C
Annual rain
1 045mm
Moisture idx (CMI)
-0,11
Runoff
432mm/an
PET
1 176mm
AET
861mm
Mean slope
7,6°
Water table
357cm
Forest
81%
Crops
11%
Urban
13%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)