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Title: Time of travel of pollutants study : River Taw : Q22/Q25
Author: National Rivers Authority South Western Region
Document Type: Monograph
Oscar Faber Water was commissioned by the National Rivers Authority, South Western Region, to undertake a study of the time of travel of pollutants in the River Taw between Junction Pool (the confluence of the Rivers Taw and Mole) and New Bridge during high flow conditions. The study was carried out over the period 13th to the 14th December 1994. The river was divided into eight reaches and these were studied in succession in an upstream direction using Rhodamine-B as the tracer. Average daily flow reduced during the study period from a Q22 percentile (Umberleigh gauge, 26.682 m3/s) to a Q25 percentile (Umberleigh gauge, 23.739 m3/s). The combined time of travel for the overall distance of 19.61 km for Junction Pool to New Bridge was 5 hours 11 minutes. The average velocity of travel was 1.05 m/s.
Publisher: National Rivers Authority
Publication Date: 1995
Publication Place: Exeter
Subject Keywords: RiversWater pollutionPollutantsTimeLengthFlow rate
Geographic Keywords: EA South WestNorth Devon catchmentDevon
Extent: 8; + appendices
Total file downloads: 268

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