City of Raleigh Drought Forecasting Client: City of Raleigh Public Utility Department Location: Raleigh, NC The City of Raleigh’s water supply reservoirs experienced prolonged drawdowns during an extended dry period from 2010 through 2012. The Raleigh City Council asked the Public Utilities Department (CORPUD) to provide reports on the City’s water supply status along with a recommendation regarding whether mandatory conservation measures were necessary to ensure the City’s water supply reliability in the event of an intensifying drought. CORPUD turned to Hazen and Sawyer to help it address these concerns.The forecast is based on an OASIS model of the Neuse River basin. This model uses 80+ years of historical hydrology, along with simulated reservoir operation rules and demands, to provide

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