HydroBASINS lev08 watershed · #7080639860
Bassin de Big Laurel 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 : Greene, Madison, Unicoi, Yancey
Sub-basin area
337,3km²
Upstream area
337,3km²
Discharge
7,07m³/s
Mean elev.
905m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- Madison333.0 km²98.7% of basin
- Greene3.7 km²1.1% of basin
- 0.7 km²0.2% of basin
- 0.0 km²0.0% of basin
4 intersecting protected areas
Watershed Protection Area
3.16 km² overlap
Wildlife Management Area
1.78 km² overlap
Marshall Watershed
IUCN VWatershed
0.26 km² overlap
Conservation Easement
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 416 distinct species · 26 811 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 48 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 Big Laurel Creek : 38 espèces reliées par 71 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 10 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 250mm
Moisture idx (CMI)
0,09
Runoff
661mm/an
PET
1 126mm
AET
926mm
Mean slope
14,8°
Water table
513cm
Forest
100%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)