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Graphical analysis facilitates evaluation of stream-temperature monitoring data

  • Author(s): Tate, Kenneth W.
  • Lile, David F.
  • Lancaster, Donald L.
  • Porath, Marni L.
  • Morrison, Julie A.
  • Sado, Yukako
  • et al.
Abstract

Watershed groups, individuals, and land management and regulatory agencies are collecting stream-temperature data in order to understand, protect and enhance cold-water fisheries. While great quantities of data are being generated, its analysis and interpretation are often not adequate to identify stream reaches that are gaining or losing temperature, or to correlate temperature changes with factors such as vegetative canopy cover or stream-flow levels. We use a case study from the Lassen and Willow creek watersheds in northeastern Modoc County to demonstrate graphical methods for displaying, analyzing and interpreting stream-temperature data.

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