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