HydroBASINS lev08 watershed · #2080053510
Bassin de River Stiffkey
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
908,8km²
Upstream area
908,8km²
Discharge
0,03m³/s
Mean elev.
37m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom439.1 km²48.1% of basin
- NAEngland · United Kingdom437.9 km²48.0% of basin
30 intersecting protected areas
Norfolk Coast
IUCN VArea of Outstanding Natural Beauty
370.50 km² overlap
North Norfolk
IUCN VHeritage Coast
81.89 km² overlap
North Norfolk Coast
IUCN VWetland of International Importance (Ramsar Site)
62.58 km² overlap
North Norfolk Coast
IUCN Not ReportedEmerald Network
62.51 km² overlap
North Norfolk Coast
IUCN IVSite of Special Scientific Interest
62.45 km² overlap
Greater Wash
IUCN Not ReportedMarine Protected Area (OSPAR)
44.97 km² overlap
Greater Wash
IUCN Not ReportedEmerald Network
44.62 km² overlap
The Wash and North Norfolk Coast
IUCN Not ReportedEmerald Network
39.36 km² overlap
The Wash and North Norfolk Coast
IUCN Not ReportedMarine Protected Area (OSPAR)
35.68 km² overlap
21 more protected areassorted by overlap area
North Norfolk Coast
IUCN Not ReportedEmerald Network
30.87 km² overlap
North Norfolk Coast
IUCN Not ReportedMarine Protected Area (OSPAR)
30.77 km² overlap
Holkham
IUCN IVNational Nature Reserve
25.08 km² overlap
North Norfolk Coast
IUCN Not ReportedMarine Protected Area (OSPAR)
22.00 km² overlap
The Wash
IUCN IVWetland of International Importance (Ramsar Site)
13.46 km² overlap
The Wash
IUCN Not ReportedEmerald Network
13.38 km² overlap
The Wash
IUCN IVSite of Special Scientific Interest
13.37 km² overlap
The Wash
IUCN Not ReportedMarine Protected Area (OSPAR)
9.86 km² overlap
Blakeney
IUCN IVNature Reserve
9.45 km² overlap
Southern North Sea
IUCN Not ReportedEmerald Network
9.32 km² overlap
Southern North Sea
IUCN Not AssignedMarine Protected Area (OSPAR)
9.30 km² overlap
Blakeney
IUCN IVNational Nature Reserve
8.57 km² overlap
Scolt Head Island
IUCN IVNational Nature Reserve
6.52 km² overlap
The Wash
IUCN IVNational Nature Reserve
6.47 km² overlap
Scolt Head Island
IUCN IVNature Reserve
5.94 km² overlap
Brancaster
IUCN IVNature Reserve
5.72 km² overlap
Snettisham
IUCN IVNature Reserve
4.06 km² overlap
Winterton - Horsey Dunes
IUCN IVSite of Special Scientific Interest
3.89 km² overlap
Winterton - Horsey Dunes
IUCN Not ReportedEmerald Network
3.89 km² overlap
Titchwell Marsh
IUCN IVNature Reserve
3.14 km² overlap
The Broads
IUCN VNational Park
2.50 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
13 563 distinct species · 2 939 250 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 Stiffkey : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 56 interactions GloBI sur 2 types (connectance 11.3%, 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°
9,7°C
Annual rain
626mm
Moisture idx (CMI)
-0,02
Runoff
320mm/an
PET
636mm
AET
482mm
Mean slope
1,3°
Water table
112cm
Forest
1%
Crops
86%
Urban
3%
Protected
43%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)