From California WaterBlog- Water supply reliability is a major policy and management goal in California, and in the rest of the world, today and since the beginning of time.  The goals of reliable water supplies have grown from supporting human health, to supporting economic prosperity, to supporting healthy ecosystems, even when these goals conflict. Since ancient times, water supply planning, engineering, and operations have sought to provide reliable water supplies.  But until 106 years ago, there was little sophistication on exactly how reliable a water supply would be or should be. Today, water uses have grown and diversified, and sometimes conflict when water availability is insufficient for all uses.  Water availability will always be limited, despite infrastructure investments, and often will diminish or become more expensive with climate change and evolving environmental and public health standards. (more)

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Picture: Allen Hazen 1911