HydroBASINS lev08 watershed · #2080394580
Bassin de River Wey
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 : Bracknell Forest, NA, Surrey, West Sussex
Sub-basin area
974,3km²
Upstream area
974,5km²
Discharge
9,74m³/s
Mean elev.
96m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- SurreyEngland · United Kingdom663.0 km²67.8% of basin
- NAEngland · United Kingdom295.2 km²30.2% of basin
- West SussexEngland · United Kingdom13.1 km²1.3% of basin
- Bracknell ForestEngland · United Kingdom6.5 km²0.7% of basin
30 intersecting protected areas
Surrey Hills
IUCN VArea of Outstanding Natural Beauty
236.73 km² overlap
South Downs
IUCN VNational Park
127.16 km² overlap
Thursley, Ash, Pirbright and Chobham
IUCN Not ReportedEmerald Network
44.48 km² overlap
Thames Basin Heaths
IUCN Not ReportedEmerald Network
36.80 km² overlap
Thursley, Hankley and Frensham Commons (Wealden Heaths Phase 1)
IUCN Not ReportedEmerald Network
18.81 km² overlap
Site of Special Scientific Interest
18.80 km² overlap
Wealden Heaths Phase 2
IUCN Not ReportedEmerald Network
17.57 km² overlap
Colony Bog and Bagshot Heath
IUCN IVSite of Special Scientific Interest
11.31 km² overlap
Ash to Brookwood Heaths
IUCN IVSite of Special Scientific Interest
10.98 km² overlap
21 more protected areassorted by overlap area
Woolmer Forest
IUCN IVSite of Special Scientific Interest
9.95 km² overlap
Woolmer Forest
IUCN Not ReportedEmerald Network
6.48 km² overlap
Hindhead Commons
IUCN VNature Reserve
5.06 km² overlap
Site of Special Scientific Interest
4.89 km² overlap
Chobham Common
IUCN IVSite of Special Scientific Interest
4.13 km² overlap
Ludshott Commons
IUCN VNature Reserve
4.05 km² overlap
Frensham Common
IUCN VNature Reserve
3.82 km² overlap
Site of Special Scientific Interest
3.75 km² overlap
Chobham Common
IUCN IVNational Nature Reserve
3.33 km² overlap
Thursley
IUCN IVNational Nature Reserve
3.23 km² overlap
Ockham and Wisley
IUCN IVLocal Nature Reserve
2.86 km² overlap
Devil's Punch Bowl
IUCN IVSite of Special Scientific Interest
2.82 km² overlap
Thursley & Ockley Bog
IUCN Not ReportedWetland of International Importance (Ramsar Site)
2.68 km² overlap
East Hampshire Hangers
IUCN Not ReportedEmerald Network
2.58 km² overlap
Ockham and Wisley Commons
IUCN IVSite of Special Scientific Interest
2.37 km² overlap
Whitmoor & Rickford Commons
IUCN IVLocal Nature Reserve
1.85 km² overlap
Whitmoor Common
IUCN IVSite of Special Scientific Interest
1.66 km² overlap
Farnham Heath
IUCN IVNature Reserve
1.62 km² overlap
Nature Reserve
1.62 km² overlap
Horsell Common
IUCN IVSite of Special Scientific Interest
1.52 km² overlap
Blackheath
IUCN IVSite of Special Scientific Interest
1.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
12 840 distinct species · 1 379 549 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Wey : 25 espèces reliées par 76 interactions GloBI sur 3 types (connectance 15.3%, filtre Serrano α=0.2). 7 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°
9,6°C
Annual rain
761mm
Moisture idx (CMI)
0,05
Runoff
327mm/an
PET
713mm
AET
536mm
Mean slope
2,4°
Water table
256cm
Forest
10%
Crops
21%
Urban
26%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)