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quickly and fairly frequently after just a few weeks or months of below-normal rainfall. Those who share stored water are rarely affected by less than normal precipitation because the systems are designed to provide water during those times. But the very success of such systems creates a new kind of vulnerability to drought that was revealed in the Northeast during drought in the 1960s, the 1976-1977 and 1987-1992 droughts in California, droughts around the country in the late 1980s, and the mid-Atlantic, southeastern, and northeastern drought in 1999. Specific issues vary, but the pattern is common.
Public testimony at the Commission’s hearing in Los Angeles and comments from the Army Corps of Engineers pointed out that stored water system managers develop drought contingency plans that call for the staged curtailment of the least important uses of water (such as lawn watering) during droughts. Communities may elect to accept these drought-related reductions rather than add reservoir capacity to meet growing needs. Stored water managers consider the risks associated with the probability of system failure, the uncertain effectiveness of drought curtailment measures, uncertainty in estimates of drought severity and duration, and the tolerance of utility customers for water use curtailments. These concepts are not routinely applied to manage drought impacts on agriculture, but they could be. As Guy Martin of the Western Urban Water Coalition advised the Commission, "Overall, we believe there is a missed opportunity to link the resources of the urban water sector with the agricultural sector. While the end water use may be different, the techniques necessary to plan for, conduct, assess, monitor and implement conservation techniques to alleviate drought impacts cover all sectors." Natural water droughts mostly affect people such as farmers and ranchers, forest and woodlot owners and managers, customers of many water systems, and the owners of water-dependent businesses who rely on direct precipitation or unregulated stream flows. These people are usually the first to feel the effects of drought. Return to Table of Contents | (Next Page) |
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