Click on a monitoring station name to view live and historical river data.
Station
Parameter
River
Town
Bishops Stortford, Grange Paddocks Water Level (Stage)
River Stort
Bishop's Stortford
Borehamwood Water Level (Stage)
Borehamwood Brook
Green Street
Bragbury Park Water Level (Stage)
Stevenage Brook
Bragbury End
Braughing Water Level (Stage)
River Quin
Braughing
Buntingford Water Level (Stage)
River Rib
Buntingford
Cheshunt, Rosedale Way Water Level (Stage)
Rags Brook
Flamstead End
Cheshunt, Trinity Lane Water Level (Stage)
Theobalds Brook
Waltham Cross
Cheshunt, Windmill Lane Water Level (Stage)
Small River Lee
Cheshunt
Colney Street Water Level (Stage)
River Ver
Colney Street
Croxley Green Water Level (Stage)
River Gade
Croxley Green
Dane End Water Level (Stage)
River Beane
Dane End
Fulling Mill Water Level (Stage)
River Mimram
Welwyn
Furneux Pelham Water Level (Stage)
River Ash
Furneux Pelham
Harlow Mill Water Level (Stage)
River Stort
Harlow
Harpenden Water Level (Stage)
River Lee
Harpenden
Hemel Hempstead, Bury Mill, Water Level (Stage)
River Gade
Hemel Hempstead
Hemel Hempstead, Old Fishery Lane Water Level (Stage)
River Bulbourne
Hemel Hempstead
Hemel Hempstead, Two Waters Road Water Level (Stage)
River Bulbourne
Hemel Hempstead
Hertford, Hartham Park Water Level (Stage)
River Beane
Hertford
Hitchin Gs Water Level (Stage)
Hoddesdon, Rye Bridge Flow
River Lee
Hoddesdon
Hoddesdon, Rye Bridge Water Level (Stage)
River Lee
Hoddesdon
Lilley Bottom Obh Water Level (Groundwater)
Lilley Bottom Obh Water Level (Groundwater)
Little Hadham Water Level (Stage)
River Ash
Little Hadham
London Colney Water Level (Stage)
River Colne
London Colney
Mardock Water Level (Stage)
River Ash
Wareside
Markyate Water Level (Downstream Stage)
River Ver
Markyate
Markyate Water Level (Stage)
River Ver
Markyate
Mimmshall Brook Water Level (Stage)
Mimmshall Brook
South Mimms
Moor Lane Water Level (Stage)
River Colne
Rickmansworth
North Mymms Water Level (Stage)
Mimmshall Brook
Water End
Panshanger Water Level (Stage)
River Mimram
Tewin
Pishiobury Brook Water Level (Stage)
Pishiobury Brook
Harlow
Radlett Water Level (Stage)
Radlett Brook
Radlett
Redbourn River Ver Water Level (Downstream Stage)
River Ver
Redbourn
Redbourn River Ver Water Level (Stage)
River Ver
Redbourn
Redbourn River Red Water Level (Downstream Stage)
River Red
Redbourn
Redbourn River Red Water Level (Stage)
River Red
Redbourn
Rickmansworth Water Level (Downstream Stage)
River Chess
Rickmansworth
Rickmansworth Water Level (Stage)
River Chess
Rickmansworth
River Hill Obh Water Level (Groundwater)
River Lee At Feildes Weir (Gauged) Water Level (Stage)
Rye Meads Effluent At Rye Meads Water Level (Stage)
Shaftenhoe End Rrb Water Level (Groundwater)
Tumbling Bay Weir Ds Water Level (Stage)
Amwell Loop
Ware
Wadesmill Water Level (Stage)
River Rib
Wadesmill
Walkern Water Level (Stage)
River Beane
Walkern
Waterhall Water Level (Stage)
River Lee
Birch Green
Watford Water Level (Downstream Stage)
River Colne
Watford
Watford Water Level (Stage)
River Colne
Watford
Watton At Stone Water Level (Stage)
River Beane
Watton At Stone
Whitwell Water Level (Stage)
River Mimram
Whitwell