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Tuesday, February 7 • 6:00pm - 9:00pm
Poster Display. Relationship Between Water Temperature and Flow Rates for Missouri Streams

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AUTHORS: Bridget Whitehead, University of Missouri; Joanna Whittier, University of Missouri; Del Lobb, Missouri Department of Conservation; Jacob Westhoff, Missouri Department of Conservation, and Craig Paukert, U.S. Geological Survey, Missouri Cooperative Fish and Wildlife Research Unit

ABSTRACT:  Water temperature is one of the most important abiotic influences on stream ecosystems. Water temperature is a major influence when making management decisions for fish stocking, harvest regulations as affected by growth, and mitigation of anthropogenic disturbances. Our objective was to create a stream temperature model for Missouri streams that included flow metrics to provide a decision support tool for assessing how modifications to stream flow might impact current thermal regimes. Between 2011 and 2015, we deployed water temperature loggers near 65 USGS gage sites in the Central Plains (CP) and Ozark Region (OR) aquatic subregions of Missouri. Temperature loggers were set to record temperature hourly to coincide with USGS gage records of discharge. Stream temperature models were based on a minimum of two complete years of empirical data and were developed separately for the CP and OR subregions due to differences in water temperature and discharge (CP: mean=13.8 °C; OR: 16.9 °C). Model fit for water temperature was better for the CP (adjusted r2=0.91) than for the OR (adjusted r2 = 0.87).   These will provide scientifically-defensible models for the implications of flow regime alterations on stream temperature.

Tuesday February 7, 2017 6:00pm - 9:00pm
Lancaster Ballroom

Attendees (3)