Sediment load during flood events for illinois streams

Misganaw Demissie

Research output: Contribution to journalArticlepeer-review

Abstract

A large percentage of the annual sediment yield from a watershed is transported by a stream during a small number of floods that occur in a relatively short period of time in a year The sediment load during flood events is examined and relations between the annual sediment yield and the sediment load during the major floods in a given year are developed based on available stream sediment data from the state of Illinois. On the average, the annual flood transports from 20 per cent (for large rivers) to 23 per cent (for small streams) of the annual sediment load, while the two highest floods in a year transport from 32 to 43 per cent of the annual sediment load. The average duration of the annual flood is only 9.2 days, which is 2.5 per cent of the whole year The average duration of the two highest floods is 17 days, which represents only 4.7 per cent of time in a year.

Original languageEnglish (US)
Pages (from-to)131-137
Number of pages7
JournalWater International
Volume21
Issue number3
DOIs
StatePublished - Sep 1996
Externally publishedYes

ASJC Scopus subject areas

  • Water Science and Technology
  • Management, Monitoring, Policy and Law

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