Managing Water Price Volatility: Hedging Strategies for Water Markets in the Western U.S.

Over the past 30 years, water rights transactions have become increasingly common, driven by increasing scarcity, economic growth and the need to sustain instream flows. Water rights markets are anticipated to play a vital role in managing the impacts of hydrologic variability on increasingly stressed water supplies, challenges that will be further intensified by climate change. The State Water Project (SWP), primarily used for urban water supply, delivers surface water imported from Northern California to the Central Valley and Southern California. With the capacity to export up to 4.1 million acre-feet of water annually, the SWP provides these regions with up to 25% of their total water supply. However, the availability of water for export is subject to considerable variability due to fluctuating hydrologic conditions and stringent environmental regulations, and in a growing number of years, exports are substantially reduced, leading to considerable volatility in water market prices. This price uncertainty has become a source of financial risk to water districts, farmers, irrigation districts, groundwater storage banks and other water-dependent groups, leading lenders, investors and credit ratings agencies to pressure these groups into developing more effective financial risk management strategies. This study utilizes a simulation model that integrates export forecasts, regulatory constraints, and groundwater banking to estimate water transaction prices in California. The model's predictions are validated against data from various statewide and regional water markets. A scenario analysis focused on the financial impact of water price volatility on municipalities further demonstrates the model's effectiveness in managing urban financial risk. Moreover, the forward-looking predictions of the Nasdaq Veles California Water Prices Index (NQH2O) underscore its utility in managing financial risks within California's water markets, while also providing valuable insights for the development of water price indices in other regions.