HydroBASINS lev08 watershed · #2080053270
Bassin de Halton Drain
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
68,9km²
Upstream area
68,9km²
Discharge
0,64m³/s
Mean elev.
23m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- NAEngland · United Kingdom65.4 km²94.5% of basin
- NAEngland · United Kingdom0.0 km²0.0% of basin
10 intersecting protected areas
Humber Estuary
IUCN Not ReportedEmerald Network
6.94 km² overlap
Humber Estuary
IUCN IVSite of Special Scientific Interest
6.91 km² overlap
Humber Estuary
IUCN IVWetland of International Importance (Ramsar Site)
6.79 km² overlap
Humber Estuary
IUCN Not ReportedEmerald Network
6.78 km² overlap
Humber Estuary
IUCN Not ReportedMarine Protected Area (OSPAR)
4.82 km² overlap
Humber Estuary
IUCN Not ReportedMarine Protected Area (OSPAR)
4.67 km² overlap
Reads Island
IUCN IaNature Reserve
0.85 km² overlap
Conesby Quarry
IUCN IVLocal Nature Reserve
0.39 km² overlap
Blacktoft Sands
IUCN IVNature Reserve
0.03 km² overlap
1 more protected areassorted by overlap area
Site of Special Scientific Interest
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 689 distinct species · 16 906 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Halton Drain : 29 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 6 types (connectance 11.1%, filtre Serrano α=0.2). 9 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
629mm
Moisture idx (CMI)
-0,02
Runoff
374mm/an
PET
644mm
AET
490mm
Mean slope
1,3°
Water table
125cm
Forest
0%
Crops
43%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)