The impact of floods on infiltration rates in a disconnected stream

Wenfu Chen, Chihchao Huang, Minhsiang Chang, Pingyu Chang, Hsuehyu Lu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A few studies suggest that infiltration rates within streambeds increase during the flood season due to an increase in the stream stage and the remove of the clogged streambed. However, some studies suggest that a new clogging layer will quickly form after an older one has been eroded, and that an increase in water depth will compress the clogging layer, making it less permeable during a flood event. The purpose of this work was to understand the impact of floods on infiltration rates within a disconnected stream. We utilized pressure data and daily streambed infiltration rates determined from diurnal temperature time series within a streambed over a period of 167 days for five flood events. Our data did not support the theory that floods linearly increase the infiltration rate. Since the streambed was clogged very quickly with a large load of suspended particles and compaction of the clogged layer, infiltration rates were also low during the flooding season. However, due to an increase in the wet perimeter within the stream during flooding periods, the total recharge amount to the aquifer was increased.

Original languageEnglish
Pages (from-to)7887-7899
Number of pages13
JournalWater Resources Research
Volume49
Issue number12
DOIs
StatePublished - Dec 2013

Fingerprint

Dive into the research topics of 'The impact of floods on infiltration rates in a disconnected stream'. Together they form a unique fingerprint.

Cite this