HydroBASINS lev08 watershed · #2080377560
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 2 administrative regions : Herefordshire, County of, Powys
Sub-basin area
885,7km²
Upstream area
1 999,7km²
Discharge
62,54m³/s
Mean elev.
210m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de River Irfon290 km²
- Bassin de River Wye26 km²
2 dept-equivalent regions (GADM L2)
- Powys534.6 km²60.1% of basin
- Herefordshire, County ofEngland · United Kingdom354.6 km²39.9% of basin
30 intersecting protected areas
Bannau Brycheiniog
IUCN VNational Park
96.29 km² overlap
Site of Special Scientific Interest
14.43 km² overlap
Glascwm And Gladestry Hills
IUCN IVSite of Special Scientific Interest
11.17 km² overlap
River Wye/ Afon Gwy
IUCN Not ReportedEmerald Network
8.19 km² overlap
Begwns
IUCN VNature Reserve
5.23 km² overlap
Black Mountains
IUCN IVSite of Special Scientific Interest
4.29 km² overlap
River Wye
IUCN IVSite of Special Scientific Interest
3.72 km² overlap
Site of Special Scientific Interest
3.10 km² overlap
Llangorse Lake/ Llyn Syfaddan
IUCN Not ReportedEmerald Network
2.16 km² overlap
21 more protected areassorted by overlap area
Site of Special Scientific Interest
2.16 km² overlap
Moccas Park
IUCN IVSite of Special Scientific Interest
1.38 km² overlap
Moccas Park
IUCN IVNational Nature Reserve
1.38 km² overlap
Llanelwedd Rocks
IUCN IVSite of Special Scientific Interest
0.79 km² overlap
Rhos Goch (Rhos Goch Common)
IUCN IVSite of Special Scientific Interest
0.68 km² overlap
Rhos Goch
IUCN Not ReportedEmerald Network
0.68 km² overlap
Little Mountain Common
IUCN IVLocal Nature Reserve
0.52 km² overlap
Site of Special Scientific Interest
0.47 km² overlap
Rhos Goch
IUCN IVNational Nature Reserve
0.45 km² overlap
Black Mountains
IUCN IVSite of Special Scientific Interest
0.41 km² overlap
Perry Hill Farm
IUCN VNature Reserve
0.36 km² overlap
The Flits
IUCN IVSite of Special Scientific Interest
0.35 km² overlap
The Sturts
IUCN IVSite of Special Scientific Interest
0.34 km² overlap
Brilley
IUCN VNature Reserve
0.33 km² overlap
Pwll-Y-Wrach
IUCN IVSite of Special Scientific Interest
0.32 km² overlap
Bushy Hazels & Cwmma Moors
IUCN IVSite of Special Scientific Interest
0.30 km² overlap
Duhonw
IUCN IVSite of Special Scientific Interest
0.28 km² overlap
The Flits
IUCN IVNational Nature Reserve
0.28 km² overlap
Llan Bwch-Llyn Lake
IUCN IVSite of Special Scientific Interest
0.27 km² overlap
Site of Special Scientific Interest
0.27 km² overlap
Afon Llynfi
IUCN IVSite of Special Scientific Interest
0.26 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
10 227 distinct species · 338 892 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 17 espèces reliées par 113 interactions GloBI sur 6 types (connectance 21.4%, filtre Serrano α=0.2). 16 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°
8,8°C
Annual rain
1 076mm
Moisture idx (CMI)
0,40
Runoff
826mm/an
PET
619mm
AET
535mm
Mean slope
5,2°
Water table
245cm
Forest
1%
Crops
21%
Urban
3%
Protected
16%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)