Rivière· 17 segments

River Mersey

Crosses 6 administrative regions : Halton, NA

rivière

Total length

112km

Max discharge

58,7m³/s

Max Strahler

Segments matched

River geography6 admin regions · 0 communes

Parent watershed

hybas-20800504102381 km²

6 administrative regions crossed (GADM L2)

NA
England · United Kingdom
15.5 km
in this dpt
NA
England · United Kingdom
13.5 km
in this dpt
NA
England · United Kingdom
7.3 km
in this dpt
Halton
England · United Kingdom
5.2 km
in this dpt
NA
England · United Kingdom
5.0 km
in this dpt
NA
England · United Kingdom
0.3 km
in this dpt

21 intersecting protected areas

Mersey Estuary
IUCN IV
Site of Special Scientific Interest
Mersey Estuary
IUCN Not Reported
Wetland of International Importance (Ramsar Site)
Mersey Estuary
IUCN Not Reported
Emerald Network
Mersey Estuary
IUCN Not Reported
Marine Protected Area (OSPAR)
Reddish Vale
IUCN IV
Local Nature Reserve
Stenner Woods and Milgate Fields, Didsbury
IUCN IV
Local Nature Reserve
Paddington Meadows
IUCN IV
Local Nature Reserve
Rixton Clay Pits
IUCN IV
Local Nature Reserve
Chorlton Ees & Ivy Green
IUCN IV
Local Nature Reserve

12 more protected areassorted by area

Wigg Island
IUCN IV
Local Nature Reserve
Mersey Vale Nature Park
IUCN IV
Local Nature Reserve
Woodbank Park
IUCN IV
Local Nature Reserve
Chorlton Water Park
IUCN IV
Local Nature Reserve
Abney Hall
IUCN IV
Local Nature Reserve
Pickerings Pasture
IUCN IV
Local Nature Reserve
Rixton Clay Pits
IUCN Not Reported
Emerald Network
Rixton Clay Pits
IUCN IV
Site of Special Scientific Interest
Broad Ees Dole
IUCN IV
Local Nature Reserve
Gatley Carrs
IUCN IV
Local Nature Reserve
Heaton Mersey Common
IUCN IV
Local Nature Reserve
Oxmoor Wood
IUCN IV
Local Nature Reserve

1 page = 1 named river (aggregation of 17 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 586 distinct species · 71 254 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 35 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de River Mersey : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 80 interactions GloBI sur 6 types (connectance 13.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.135

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydrology (HydroRIVERS v10)