Welcome to the event schedule and directory for the 13th Annual Salt Lake County Watershed Symposium, November 20-21, 2019. Free and open to all, the Symposium encourages a comprehensive review of the current state of our watershed while creating learning and networking opportunities for a broad array of stakeholders. Sessions cover a broad range of topics on water quality and watershed issues with local, regional, and national relevance. Hosted by Salt Lake County Watershed Planning & Restoration.

Powerpoints and audio recordings are available. Click on a session and scroll down to the attached files.
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Wednesday, November 20 • 9:55am - 10:25am
WASP Historical Simulations Over the Jordan River Under Climate Change

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WASP Historical Simulations Over the Jordan River Under Climate Change

This study analyzes the performance of the Jordan River, UT, through the Water Quality Assessment Simulation Program (WASP) under climate change scenario RCP 6.0 through a historical timeframe from October 1, 2000 to September 30, 2009, suggesting linkages among climate change and water quality followed by implications under futuristic conditions.

Full Abstract:
Assessing climate change characteristics upon the performance of watersheds appears as one fundamental topic subject to extensive research, suggesting potential effects upon water quality characteristics. For instance, climate change characteristics have been suggested to increase the likelihood of watershed impairment, potentially due to changes in runoff patterns followed by nutrient loadings into the system. Such water quality impairment present significant concerns toward evaluating the effects upon the environmental, societal, and hydrologic characteristics, along with developing potential remedies (e.g., nutrient allocation studies, Total Maximum Daily Load (TMDL) studies, etc.). For this exercise, simulations are conducted upon a river system through the Water Quality Assessment Simulation Program (WASP), implementing climate change characteristics described through the Representative Concentration Pathways (RCPs). Such simulations have been conducted upon the Jordan River, UT, an approximate 83-km, 51-mile reach with portions that have been indicated as impaired for low dissolved oxygen levels, potentially due to elevated water temperatures under low-flow conditions during the summer times. At the same time, such simulations over the Jordan River are implemented under a historical time frame, from October 1, 2000 to September 30, 2009, employing dynamically-downscaled climate data provided by the University of Utah’s Department of Atmospheric Sciences for applying climate projection RCP 6.0 toward yielding a radiative forcing of 6.0 watts per square meter. Then, the performance of the Jordan River simulations under RCP 6.0 climate data is compared against the model simulations under historical, observed climate data toward suggesting potential linkages among climate change and water quality. Such analyses provide insight toward determining the effects of climate change upon system performance, suggesting implications upon futuristic characteristics that tends to suggest elevated temperatures, increased levels of runoff and pollutant loadings, and hence potentially increased likelihood of system impairment.


Juhn-Yuan Su

Ph.D. Student, University of Utah
Juhn-Yuan Su began his Ph.D. Career/Research at the Department of Civil and Environmental Engineering at the University of Utah in June 2016 under the supervision of Dr. Michael E. Barber. He has earned his Bachelor’s of Science (B.S.) in Civil Engineering from the University of... Read More →

Wednesday November 20, 2019 9:55am - 10:25am MST
Lower Level - Ballroom C