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Title: Ely Ouse - Essex water resource investigations : scoping study for Denver naturalisation
Author: Glenn Watts
Document Type: Monograph
Essex an Suffolk Water and the Environment Agency (Anglian Region) are carrying out a joint project to develop a new computer model of the Ely Ouse - Essex Transfer Scheme. A review of the hydrometric data which feeds the model forms part of this work. This report investigates the options for naturalising the flow record from Denver on the Ely Ouse. The upper reaches of the Ely Ouse are a series of chalk streams in Norfolk, Suffolk and Cambridgeshire. Further downstream, the river flows into the fens. This is one of the most productive farming areas in the country, and there is great demand for water for arable crops. In summer, water leaves the main river channel in a variety of ways. It is proposed that the Denver flows should be naturalised by decomposition. This is the process of removing artificial influences from the gauged record to produce a natural record. It is suggested that Denver naturalisation should initially cover the period from 1980 onwards, because of the difficulty of understanding changes in the Fens over the historic gauged record. The method used will be to naturalise the flows to the Fen-edge gauging stations using decomposition, and to estimate losseis in the Fens using a water balance approach. This will give sufficient flexibility to allow the calculation of flows for future scenarios.
Publisher: Environment Agency Anglian Region
Publication Date: 1998
Publication Place: Peterborough
Subject Keywords: Water abstractionWater transferWater managementCatchment managementFlood defence structuresFlow rate
Geographic Keywords: Ouse (Sussex)Cam and Ely Ouse catchmentCamDenver (Norfolk)
Extent: 11
Total file downloads: 293

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