A Performance Audit of Projections of Utah's Water Needs


Book Description

The Legislative Auditor General was asked to evaluate the accuracy of the state's projected demand and supply of water and to investigate options for extending Utah's currently developed water supply. This audit finds that the Division of Water Resources does not have a reliable source of local water use data on which to base its projections. For this reason, auditors question the reliability of the division's 2000 water use study, which was used as a baseline for projecting Utah's future water needs. According to this study, each Utah resident will use, on average, 220 gallons per day through the year 2060. Evidence suggests this number is overstated and that per capita consumption levels will likely decline below 220 gallons per day by 2060. Better data on current water consumption from regional and local water agencies is needed. The estimated cost of two large-scale water projects, the Lake Powell Pipeline and the Bear River Project, alone is $2.5 billion. The huge expense of the proposed projects highlights the need for a reliable forecast of water demand and supply. Policy makers can further reduce water demand by requiring metering on all service connections and by promoting pricing structures that encourage conservation. Finally, auditors found the division's estimates of future water supply are understated. This is because more water will become available by converting agriculture water for municipal and industrial use than is projected.




An In-depth Follow-up of Projections of Utah's Water Needs


Book Description

Our in-depth follow-up concludes the latest water use data is much improved. However, the Division of Water Resources (DWRe) and the Division of Water Rights (DWRi) need more time to finish implementing all the recommendations in our May 2015 audit report. For example, DWRe can do more trend analysis and validation of water use data. DWRe should also take steps to validate their estimates of secondary water use. Some progress has been made towards implementing our recommendations regarding water conservation. However, even though the Legislature and the Governor have expressed support for universal metering, only a few cities with secondary systems have installed meters on each connection. In addition, many but not all water systems have complied with the new law requiring a tiered pricing structure. This report recommends the Legislature consider leak detection as another strategy for reduce water consumption. Finally, DWRe is still working on updating its basin plans and intends to develop better estimates of the future water supply. DWRi needs to complete its roll out of a new web portal for collecting water use data.

























Great Salt Lake Biology


Book Description

Great Salt Lake is an enormous terminal lake in the western United States. It is a highly productive ecosystem, which has global significance for millions of migrating birds who rely on this critical feeding station on their journey through the American west. For the human population in the adjacent metropolitan area, this body of water provides a significant economic resource as industries, such as brine shrimp harvesting and mineral extraction, generate jobs and income for the state of Utah. In addition, the lake provides the local population with ecosystem services, especially the creation of mountain snowpack that generates water supply, and the prevention of dust that may impair air quality. As a result of climate change and water diversions for consumptive uses, terminal lakes are shrinking worldwide, and this edited volume is written in this urgent context. This is the first book ever centered on Great Salt Lake biology. Current and novel data presented here paint a comprehensive picture, building on our past understanding and adding complexity. Together, the authors explore this saline lake from the microbial diversity to the invertebrates and the birds who eat them, along a dynamic salinity gradient with unique geochemistry. Some unusual perspectives are included, including the impact of tar seeps on the lake biology and why Great Salt Lake may help us search for life on Mars. Also, we consider the role of human perceptions and our effect on the biology of the lake. The editors made an effort to involve a diversity of experts on the Great Salt Lake system, but also to include unheard voices such as scientists at state agencies or non-profit advocacy organizations. This book is a timely discussion of a terminal lake that is significant, unique, and threatened.