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Rags Brook is a tributary of the Small River Lea, which is a tributary of the River Lea. Rags Brook rises in the hills between Goffs Oak Cuffley in Hertfordshire, England. Brookfield Lane follows the course of the brook and the Brookfield Centre reflects the brook in its name.

The highest river level recorded at Rosedale Way, Cheshunt was 1.57 metres and the river level reached 1.57 metres on 11/06/2012.

The brook runs through Cuffley and Cheshunt before converging with Turnford Brook in the area known as Cheshunt Wash, before joining the Small River Lea.

v t e River Lea / Lee, England
Counties	Bedfordshire Essex Hertfordshire Greater London
Mouth	River Thames
Settlements	Leagrave Luton Harpenden Wheathampstead Welwyn Garden City Hertford Ware Stanstead Abbotts Hoddesdon Broxbourne Cheshunt Waltham Abbey Ponders End Edmonton Tottenham Upper Clapton Hackney Wick Stratford Bromley-by-Bow Canning Town Leamouth
Major tributaries	River Ash River Beane River Ching River Mimram River Moselle River Rib River Stort
Minor tributaries	Bayford Brook Broxbourne Mill Stream Cobbins Brook Coppermill Stream Cornmill Stream Cuffley Brook Dagenham Brook Hackney Brook Houghton Brook Knapps Brook Lewsey Brook Millhead Stream Pymmes Brook Rags Brook River Lynch Salmons Brook Small River Lea Spital Brook Theobalds Brook Turkey Brook Turnford Brook Woollens Brook Wormleybury Brook

51°42′49″N 0°02′57″W / 51.71361°N 0.04909°W / 51.71361; -0.04909