Ruisseau· 5 segments

River Lea

Crosses 5 administrative regions : Luton, NA

ruisseau

Total length

85km

Max discharge

12,6m³/s

Max Strahler

Segments matched

River geography5 admin regions · 0 communes

Parent watershed

hybas-20803912601387 km²

5 administrative regions crossed (GADM L2)

NA
England · United Kingdom
32.9 km
in this dpt
Luton
England · United Kingdom
9.3 km
in this dpt
NA
England · United Kingdom
5.5 km
in this dpt
NA
England · United Kingdom
3.9 km
in this dpt
NA
England · United Kingdom
3.1 km
in this dpt

16 intersecting protected areas

Lee Valley
IUCN Not Reported
Wetland of International Importance (Ramsar Site)
Lee Valley
IUCN Not Reported
Emerald Network
Walthamstow Reservoirs
IUCN IV
Site of Special Scientific Interest
Turnford & Cheshunt Pits
IUCN IV
Site of Special Scientific Interest
Rye Meads
IUCN IV
Site of Special Scientific Interest
Walthamstow Marshes
IUCN IV
Site of Special Scientific Interest
Amwell Quarry
IUCN IV
Site of Special Scientific Interest
Waltham Abbey
IUCN IV
Site of Special Scientific Interest
Rye Meads
IUCN IV
Nature Reserve

7 more protected areassorted by area

Springfield Park
IUCN IV
Local Nature Reserve
The Commons
IUCN IV
Local Nature Reserve
Cowslip Meadow
IUCN IV
Site of Special Scientific Interest
Wheathampstead Development Centre
IUCN IV
Local Nature Reserve
Marshalls Heath
IUCN IV
Local Nature Reserve
Batford Springs
IUCN IV
Local Nature Reserve
Stanborough Reedmarsh
IUCN IV
Local Nature Reserve

1 page = 1 named river (aggregation of 5 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

3 041 distinct species · 101 132 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 36 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 Lea : 23 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 70 interactions GloBI sur 5 types (connectance 11.1%, filtre Serrano α=0.2). 13 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.111

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)