HydroBASINS lev08 watershed · #2080368750
Bassin de River Great Ouse
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 9 administrative regions : Bedford, Luton, Milton Keynes, NA
Sub-basin area
3 251,7km²
Upstream area
3 251,7km²
Discharge
26,91m³/s
Mean elev.
74m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom835.0 km²25.6% of basin
- NAEngland · United Kingdom636.3 km²19.5% of basin
- NAEngland · United Kingdom453.9 km²13.9% of basin
- BedfordEngland · United Kingdom428.4 km²13.1% of basin
- NAEngland · United Kingdom364.2 km²11.2% of basin
- Milton KeynesEngland · United Kingdom308.6 km²9.5% of basin
- NAEngland · United Kingdom173.3 km²5.3% of basin
- NAEngland · United Kingdom64.7 km²2.0% of basin
1 moreFull L2 list
- Luton0.0 km² · 0.0%
30 intersecting protected areas
Chilterns
IUCN VArea of Outstanding Natural Beauty
51.41 km² overlap
Grafham Water
IUCN IVSite of Special Scientific Interest
8.07 km² overlap
Whittlewood Forest
IUCN IVSite of Special Scientific Interest
4.00 km² overlap
Fen Drayton
IUCN IVNature Reserve
3.98 km² overlap
Ashridge Estate
IUCN VNature Reserve
2.68 km² overlap
Site of Special Scientific Interest
2.12 km² overlap
The Lodge
IUCN IVNature Reserve
2.07 km² overlap
Ivinghoe Hills
IUCN IVSite of Special Scientific Interest
1.95 km² overlap
King's Wood and Rushmere
IUCN IVNational Nature Reserve
1.92 km² overlap
21 more protected areassorted by overlap area
Stowe
IUCN VNature Reserve
1.76 km² overlap
Site of Special Scientific Interest
1.49 km² overlap
Brampton Wood
IUCN IVSite of Special Scientific Interest
1.32 km² overlap
Salcey Forest
IUCN IVSite of Special Scientific Interest
1.32 km² overlap
Little Paxton Pits
IUCN IVSite of Special Scientific Interest
1.27 km² overlap
Ouse Fen
IUCN IVNature Reserve
1.20 km² overlap
Yardley Chase
IUCN IVSite of Special Scientific Interest
1.14 km² overlap
Portholme
IUCN IVSite of Special Scientific Interest
1.06 km² overlap
Portholme
IUCN Not ReportedEmerald Network
0.92 km² overlap
Site of Special Scientific Interest
0.88 km² overlap
Odell Great Wood
IUCN IVSite of Special Scientific Interest
0.86 km² overlap
Site of Special Scientific Interest
0.73 km² overlap
Perry Woods
IUCN IVSite of Special Scientific Interest
0.68 km² overlap
Knebworth Woods
IUCN IVSite of Special Scientific Interest
0.63 km² overlap
Weaveley and Sand Woods
IUCN IVSite of Special Scientific Interest
0.62 km² overlap
Potton Wood
IUCN IVSite of Special Scientific Interest
0.61 km² overlap
Little Paxton Pits
IUCN IVLocal Nature Reserve
0.60 km² overlap
Harrold Odell Country Park
IUCN IVLocal Nature Reserve
0.59 km² overlap
Flitwick Moor
IUCN IVSite of Special Scientific Interest
0.59 km² overlap
Marston Thrift
IUCN IVLocal Nature Reserve
0.56 km² overlap
Waresley Wood
IUCN IVSite of Special Scientific Interest
0.54 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
15 728 distinct species · 4 821 835 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 Great Ouse : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 74 interactions GloBI sur 5 types (connectance 14.0%, filtre Serrano α=0.2). 6 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
599mm
Moisture idx (CMI)
-0,13
Runoff
269mm/an
PET
691mm
AET
496mm
Mean slope
1,3°
Water table
101cm
Forest
0%
Crops
58%
Urban
13%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)