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A pilot study of the efficacy of residuum lodges for managing sediment delivery to impoundment reservoirs.

Research output: Contribution to journalJournal article

Published

  • Paul Kay
  • Alona Armstrong
  • Adrian McDonald
  • Dan Parsons
  • Jim Best
  • Jeff Peakall
  • Andrew Walker
  • Miles Foulger
  • Sarah Clements
Journal publication date03/2009
JournalWater and Environment Journal
Journal number1
Volume23
Number of pages11
Pages52-62
Original languageEnglish

Abstract

Residuum lodges comprise small dams constructed on feeder streams immediately before they enter a reservoir, behind which ponds form, where sediment is deposited. Despite their construction on many impoundment reservoirs (IRE) and catchwaters, little research has previously investigated their efficacy at removing sediments from feeder streams. The current pilot study has, therefore, been carried out at an IRE supplying Halifax, West Yorkshire, UK, where a residuum lodge was recently cleaned out. Sediment concentrations reaching the reservoir were reduced by up to 42% although no certain impacts were noted on the other water quality variables that were measured. Moreover, it was found that the clearance operation did not result in the release of excessive quantities of sediment into the reservoir. It was estimated that the cleared residuum lodge would take 12 years to refill. A survey of other residuum lodges in the Yorkshire region showed there to be considerable differences in their remaining capacities.