HydroBASINS lev08 watershed · #2080393150
Bassin de River Thames
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 10 administrative regions : Bracknell Forest, NA, Surrey, West Berkshire
Sub-basin area
1 477,8km²
Upstream area
7 212,4km²
Discharge
59,95m³/s
Mean elev.
86m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de River Kennet1126 km²
- Bassin de River Thames460 km²
10 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom445.3 km²30.0% of basin
- NAEngland · United Kingdom321.5 km²21.7% of basin
- NAEngland · United Kingdom187.2 km²12.6% of basin
- NAEngland · United Kingdom171.5 km²11.6% of basin
- NAEngland · United Kingdom119.7 km²8.1% of basin
- Bracknell ForestEngland · United Kingdom102.9 km²6.9% of basin
- SurreyEngland · United Kingdom83.7 km²5.6% of basin
- NAEngland · United Kingdom42.9 km²2.9% of basin
2 moreFull L2 list
- West Berkshire6.2 km² · 0.4%
- NA2.4 km² · 0.2%
30 intersecting protected areas
Chilterns
IUCN VArea of Outstanding Natural Beauty
291.91 km² overlap
Thames Basin Heaths
IUCN Not ReportedEmerald Network
46.10 km² overlap
Site of Special Scientific Interest
17.80 km² overlap
Windsor Forest and Great Park
IUCN Not ReportedEmerald Network
16.87 km² overlap
Site of Special Scientific Interest
12.08 km² overlap
Site of Special Scientific Interest
9.23 km² overlap
Bourley and Long Valley
IUCN IVSite of Special Scientific Interest
7.85 km² overlap
Thursley, Ash, Pirbright and Chobham
IUCN Not ReportedEmerald Network
7.09 km² overlap
Bramshill
IUCN IVSite of Special Scientific Interest
6.74 km² overlap
21 more protected areassorted by overlap area
Ash to Brookwood Heaths
IUCN IVSite of Special Scientific Interest
4.80 km² overlap
Surrey Hills
IUCN VArea of Outstanding Natural Beauty
4.36 km² overlap
Chilterns Beechwoods
IUCN Not ReportedEmerald Network
3.70 km² overlap
Burnham Beeches
IUCN Not ReportedEmerald Network
3.62 km² overlap
Burnham Beeches
IUCN IVSite of Special Scientific Interest
3.62 km² overlap
Nature Reserve
3.52 km² overlap
Chobham Common
IUCN IVSite of Special Scientific Interest
2.43 km² overlap
North Wessex Downs
IUCN VArea of Outstanding Natural Beauty
2.36 km² overlap
Burnham Beeches
IUCN IVNational Nature Reserve
2.02 km² overlap
Bradenham
IUCN VNature Reserve
1.92 km² overlap
Chobham Common
IUCN IVNational Nature Reserve
1.87 km² overlap
Hazeley Heath
IUCN IVSite of Special Scientific Interest
1.81 km² overlap
Site of Special Scientific Interest
1.66 km² overlap
Site of Special Scientific Interest
1.35 km² overlap
Site of Special Scientific Interest
1.34 km² overlap
Butter Wood
IUCN IVSite of Special Scientific Interest
1.33 km² overlap
Site of Special Scientific Interest
1.29 km² overlap
Greys Court
IUCN VNature Reserve
1.24 km² overlap
Cliveden Estate
IUCN VNature Reserve
1.22 km² overlap
Pamber Forest
IUCN IVLocal Nature Reserve
1.16 km² overlap
South West London Waterbodies
IUCN Not ReportedEmerald Network
1.12 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
14 682 distinct species · 2 640 689 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 Thames : 23 espèces reliées par 62 interactions GloBI sur 4 types (connectance 13.3%, filtre Serrano α=0.2). 8 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°
9,7°C
Annual rain
722mm
Moisture idx (CMI)
0,02
Runoff
293mm/an
PET
707mm
AET
528mm
Mean slope
2,0°
Water table
162cm
Forest
3%
Crops
32%
Urban
37%
Protected
27%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)