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Before getting to the estimates, it important to emphasize two additional points on which we agree. First, a significant increase in the amount of water transfers was critically important to reducing the negative impacts of water scarcity. A higher than anticipated level of water transfers is a key reason these revised estimates of losses are smaller than we estimated last year. Building on these successful transfers will be important in minimizing the losses from future September 28, 2010 The effect of reduced water supplies as a result of drought and environmental pumping restrictions in 2009 on the San Joaquin Valley economy was, and continues to be, the subject of significant discussion. Economic effects were quantified in terms of agricultural production, revenues, and jobs and income. In the midst of a severe recession, it is no surprise that job loss estimates generated the most interest and debate. In the months following the 2009 growing season, data have been released that offer a clearer picture of the effects of reduced water supplies. As such, the purpose of this report is to take a retrospective look back at 2009 and summarize changes in agricultural production and employment in the San Joaquin Valley due to reduced water supplies. Model results and survey data now closely coincide and provide conclusive evidence on the final effects of reduced water supplies in 2009. During 2009, the authors of this report independently issued conflicting estimates of the job losses due to reduced water supplies to San Joaquin Valley agriculture. The varying estimates generated significant controversy. As more reliable data has become available, the differing estimates are converging to a relatively narrow range. By issuing a joint retrospective report, our intention is to provide an accurate range of estimates for policy and planning purposes and place the focus on the similarities rather than the differences.