HydroBASINS lev08 watershed · #2080373630
Bassin de River Wye
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 1 administrative regions : Powys
Sub-basin area
26,4km²
Upstream area
824,4km²
Discharge
30,23m³/s
Mean elev.
204m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de River Wye436 km²
- Bassin de Afon Ieithon362 km²
1 dept-equivalent regions (GADM L2)
- Powys26.5 km²100.0% of basin
14 intersecting protected areas
River Wye/ Afon Gwy
IUCN Not ReportedEmerald Network
0.54 km² overlap
Site of Special Scientific Interest
0.46 km² overlap
Cors Y Llyn
IUCN IVNational Nature Reserve
0.25 km² overlap
Cors Y Llyn
IUCN IVSite of Special Scientific Interest
0.25 km² overlap
Site of Special Scientific Interest
0.08 km² overlap
Neuadd And Tylelo Mires
IUCN IVSite of Special Scientific Interest
0.06 km² overlap
Newmead
IUCN IVSite of Special Scientific Interest
0.01 km² overlap
Cae Comin Coch
IUCN IVSite of Special Scientific Interest
0.01 km² overlap
Trecoed/Castle Crab
IUCN IVSite of Special Scientific Interest
0.01 km² overlap
5 more protected areassorted by overlap area
Pen-Cerrig Stream Section
IUCN IVSite of Special Scientific Interest
0.01 km² overlap
Site of Special Scientific Interest
0.00 km² overlap
Coed-Mawr Quarry
IUCN IVSite of Special Scientific Interest
0.00 km² overlap
Llanelwedd Rocks
IUCN IVSite of Special Scientific Interest
0.00 km² overlap
Gwern-Yfed-Fach Quarry
IUCN IVSite of Special Scientific Interest
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 795 distinct species · 44 296 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 River Wye : 12 espèces reliées par 113 interactions GloBI sur 5 types (connectance 22.8%, filtre Serrano α=0.2). 20 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°
8,7°C
Annual rain
1 275mm
Moisture idx (CMI)
0,53
Runoff
1 034mm/an
PET
602mm
AET
548mm
Mean slope
4,5°
Water table
181cm
Forest
0%
Crops
12%
Urban
0%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)