Planning & Management

Oral

394930 - An Integrated Systems Framework for Evaluating Urban Water Sector Development Options under Multiple Future Scenarios: The Case Study of San Francisco, CA

Wednesday, June 6
4:00 PM - 5:30 PM
Location: Northstar B
Co-Authors: Dr. Masoud Negahban-Azar, 1430 Animal Sci./Ag. Bldg. College Park, MD 20742 – University of Maryland

Failing/aging urban water infrastructure, increased population growth, climate change, and water scarcity are a few challenges affecting large cities in the world today. The objective of this study is to develop a holistic framework to compare urban water system developments under uncertain future conditions using the Water Evaluation and Planning tool (WEAP). As the San Francisco Public Utility Commission (SFPUC) is exploring a range of urban water development options to improve water supply reliability, it is a perfect case study for this project. In this research, we developed a model for SFPUC to compare a range of new options and their combinations (e.g. Westside Recycled Water Project, Eastside Recycled Water Project, Desalination Plant Project, etc.) under different future scenarios (e.g. climate, population growth, etc.). The preliminary results showed that the future urban water demand will increase rapidly under population growth and Climate Change scenarios, with the population growth effects outweighing the Climate Change effects. The scenarios displaying the increased use of water reuse projects/water conservation technologies increased the diversification of the water supply portfolio as well as the overall sustainability and reliability of the water sector in San Francisco. The Desalination Plant Project scenario seems to offer more benefits, in terms of water quantity and preservation of Hetch Hetchy Reservoir, as an alternative water supply than the two recycled water project scenarios. Significant impacts on the net evaporation and Hetch Hetchy Reservoir storage could also be seen in the Climate Change scenario. Changing the supply priority preference among the Desalination, Westside, and Eastside projects displayed interesting results, in that Desalination was able to alleviate more pressure off of the Hetch Hetchy Reservoir supply than the water recycling projects. Results from this study provided a demonstration of a framework that is capable of holistically comparing urban water development options under uncertainty.

Krystal Yhap

Graduate Assistant
University of Maryland-College Park

Krystal is a Masters student in the Department of Environmental Science and Technology at the University of Maryland and is working as a Graduate Assistant under Dr. Negahban-Azar. Krystal completed her undergraduate studies at the University of Maryland receiving a Bachelor of Science degree in Environmental Science and Technology: Ecological Technical Design with a minor in Sustainability Studies. As an undergraduate student, Krystal participated in the invitation-only ETE College Park Scholars program and was nominated to serve as the undergraduate student chair on the ENST Diversity Committee. Krystal also had the pleasure of completing an internship with Dr. Tilley and the National Park Service as well as an internship at State Highway Administration working as a Highway Hydraulics and Stormwater Management intern. Krystal was recently accepted into the EcologyPlus program, in partnership with the Ecological Society of America, to participate in their pilot project. Krystal’s interest is in Urban water resource management, urban water conservation, stormwater management, and natural treatment systems. Krystal is currently working closely with Dr. Negahban-Azar on research concerning the use and development of a framework that is able to holistically evaluate the sustainability of urban water systems using the Water Evaluation and Planning tool (WEAP).

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394930 - An Integrated Systems Framework for Evaluating Urban Water Sector Development Options under Multiple Future Scenarios: The Case Study of San Francisco, CA



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