HydroBASINS lev08 watershed · #2080365110
Bassin de River Lark
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 : NA, Suffolk
Sub-basin area
701km²
Upstream area
5 055km²
Discharge
40,95m³/s
Mean elev.
38m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de River Great Ouse3252 km²
- Bassin de River Granta1103 km²
2 dept-equivalent regions (GADM L2)
- SuffolkEngland · United Kingdom438.6 km²62.3% of basin
- NAEngland · United Kingdom265.1 km²37.7% of basin
30 intersecting protected areas
Breckland
IUCN Not ReportedEmerald Network
70.42 km² overlap
Breckland Farmland
IUCN IVSite of Special Scientific Interest
37.72 km² overlap
Breckland Forest
IUCN IVSite of Special Scientific Interest
25.02 km² overlap
Breckland
IUCN Not ReportedEmerald Network
5.91 km² overlap
Cavenham - Icklingham Heaths
IUCN IVSite of Special Scientific Interest
4.19 km² overlap
Ickworth
IUCN VNature Reserve
2.94 km² overlap
Fenland
IUCN Not ReportedEmerald Network
2.21 km² overlap
Cavenham Heath
IUCN IVNational Nature Reserve
2.03 km² overlap
Berner's Heath, Icklingham
IUCN IVSite of Special Scientific Interest
1.60 km² overlap
21 more protected areassorted by overlap area
Site of Special Scientific Interest
1.56 km² overlap
Deadman's Grave, Icklingham
IUCN IVSite of Special Scientific Interest
1.27 km² overlap
Chippenham Fen
IUCN IVNational Nature Reserve
1.13 km² overlap
Chippenham Fen
IUCN IVWetland of International Importance (Ramsar Site)
1.12 km² overlap
Lackford Lakes
IUCN IVSite of Special Scientific Interest
1.06 km² overlap
Ely Pits and Meadows
IUCN IVSite of Special Scientific Interest
0.86 km² overlap
Wicken Fen
IUCN IVNature Reserve
0.69 km² overlap
Wicken Fen
IUCN IVNational Nature Reserve
0.66 km² overlap
Wicken Fen
IUCN IVSite of Special Scientific Interest
0.66 km² overlap
Wicken Fen
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.65 km² overlap
West Stow Heath
IUCN IVSite of Special Scientific Interest
0.44 km² overlap
Soham Wet Horse Fen
IUCN IVSite of Special Scientific Interest
0.34 km² overlap
Newmarket Heath
IUCN IVSite of Special Scientific Interest
0.29 km² overlap
Red Lodge Heath
IUCN IVSite of Special Scientific Interest
0.21 km² overlap
Moreton Hall Community Woods
IUCN IVLocal Nature Reserve
0.18 km² overlap
Site of Special Scientific Interest
0.15 km² overlap
Barton Mills
IUCN IVLocal Nature Reserve
0.11 km² overlap
Brackland Rough
IUCN IVSite of Special Scientific Interest
0.11 km² overlap
Site of Special Scientific Interest
0.10 km² overlap
Hay Wood, Whepstead
IUCN IVSite of Special Scientific Interest
0.04 km² overlap
Horringer Court Caves
IUCN IVSite of Special Scientific Interest
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
11 465 distinct species · 866 526 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 Lark : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 6 types (connectance 26.2%, filtre Serrano α=0.2). 12 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°
9,4°C
Annual rain
556mm
Moisture idx (CMI)
-0,17
Runoff
270mm/an
PET
668mm
AET
469mm
Mean slope
1,0°
Water table
79cm
Forest
1%
Crops
73%
Urban
7%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)