Microthermal variability in a Welsh upland stream

Laura Gangi*, David M. Hannah, Markus Weiler

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

1 Citation (Scopus)


This chapter yields insight into the spatial distribution of water temperature within a small upland stream and examines the potential impact of channel morphology, groundwater influence and hydrological flow conditions on microthermal patterns. Stream temperature was measured in situ at multiple sites over a 10-week summer period to reveal uniform thermal patterns with differences in mean daily water temperature across monitoring locations of less than 0.1 °C. Hence, channel water temperature within the study reach appears largely insensitive to morphological channel features such as channel incision, channel width-depth ratio and riparian vegetation. Thermal infrared (IR) imaging provided a useful tool to monitor temperature distribution within the channel in a spatially continuous way even though shading from the river bank and reflectance of solar radiation from the water surface may hamper the detection of temperature variation.

Original languageEnglish
Title of host publicationRiver Science
Subtitle of host publicationResearch and Management for the 21st Century
EditorsDavid J. Gilvear, Malcolm T. Greenwood, Martin C. Thoms, Paul J. Wood
Number of pages16
ISBN (Electronic)9781118643525
ISBN (Print)9781119994343
Publication statusPublished - 19 Apr 2016


  • In situ temperature measurements
  • Microthermal variability
  • Thermal infrared imaging
  • Water temperature
  • Welsh upland stream

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)


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