HydroBASINS lev08 watershed · #2080363260
Bassin de River Wissey
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
Sub-basin area
557,6km²
Upstream area
557,6km²
Discharge
4,88m³/s
Mean elev.
34m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom391.0 km²69.8% of basin
- NAEngland · United Kingdom168.8 km²30.2% of basin
23 intersecting protected areas
Breckland
IUCN Not ReportedEmerald Network
130.99 km² overlap
Breckland Farmland
IUCN IVSite of Special Scientific Interest
45.23 km² overlap
Breckland Forest
IUCN IVSite of Special Scientific Interest
45.00 km² overlap
Breckland
IUCN Not ReportedEmerald Network
40.35 km² overlap
Stanford Training Area
IUCN IVSite of Special Scientific Interest
40.07 km² overlap
Norfolk Valley Fens
IUCN Not ReportedEmerald Network
3.08 km² overlap
Site of Special Scientific Interest
1.55 km² overlap
Foulden Common
IUCN IVSite of Special Scientific Interest
1.39 km² overlap
Scoulton Mere
IUCN IVSite of Special Scientific Interest
0.34 km² overlap
14 more protected areassorted by overlap area
Old Bodney Camp
IUCN IVSite of Special Scientific Interest
0.33 km² overlap
Wayland Wood, Watton
IUCN IVSite of Special Scientific Interest
0.32 km² overlap
Didlington Park Lakes
IUCN IVSite of Special Scientific Interest
0.26 km² overlap
Gooderstone Warren
IUCN IVSite of Special Scientific Interest
0.22 km² overlap
Wretton
IUCN IVSite of Special Scientific Interest
0.21 km² overlap
Site of Special Scientific Interest
0.18 km² overlap
The Brinks, Northwold
IUCN IVSite of Special Scientific Interest
0.16 km² overlap
Boughton Fen
IUCN IVSite of Special Scientific Interest
0.16 km² overlap
Site of Special Scientific Interest
0.16 km² overlap
Oxburgh Hall
IUCN VNature Reserve
0.15 km² overlap
Great Cressingham Fen
IUCN IVSite of Special Scientific Interest
0.14 km² overlap
Cranwich Camp
IUCN IVSite of Special Scientific Interest
0.13 km² overlap
Hilgay Heronry
IUCN IVSite of Special Scientific Interest
0.02 km² overlap
Great Eastern Pingo Trail
IUCN IVLocal Nature Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 917 distinct species · 540 062 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 Wissey : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 91 interactions GloBI sur 5 types (connectance 17.2%, filtre Serrano α=0.2). 11 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
600mm
Moisture idx (CMI)
-0,08
Runoff
301mm/an
PET
655mm
AET
487mm
Mean slope
0,9°
Water table
71cm
Forest
1%
Crops
74%
Urban
3%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)