Water Resources Of North America

Leonardo da Vinci, the eminent Renaissance scholar and philosopher said, "water is the driver of nature". Many may have considered it to be an overstatement in the past, but at the beginning of the third millennium, no sane individual would disagree with Leonardo's view. Water is becoming an increasingly scarce resource for most of the world's citizens. The current trends indicate that the overall situation is likely to deteriorate further, at least for the next two decades, unless the water profession eschews its existing "business as usual" practices, which can only allow incremental changes to occur. Somewhat surprisingly, the water profession as a whole neither realised nor appreciated the gravity of the global water situation as late as 1990, even though a few serious scholars have been pointing out the increasing criticality of the situation from around 1982. For example, the seriousness of the crisis was not a major issue, either at the International Conference on W ater and the Environment, which was organised by the UN system in Dublin and also at the UN Conference on Environment and Development at Rio de Janeiro. Held in 1992, both are considered to be important events for the water sector of the past decade. It is now being increasingly recognised that the Dublin Conference was poorly planned and organised, and thus not surprisingly it produced very little, if any, worthwhile and lasting results.

"As it warms, our world is running out of fresh water--fast. Lakes, aquifers and rivers are disappearing, but we consume more water than ever. What will this mean for North Americans? Dry spring shows dramatically how water loss will devastate countless communities over the next 25 years--cities and farms, forests and coastlines, ranches and orchards. The scarcity of water challenges the soaring success of some of our continent's fastest-growing regions: the American Southwest, the arid plains of Western Canada, the cross-border Great Lakes Basin. Yet while unprecedented dryness afflicts such areas as these, violently wet storms pummel many others. And drought and flooding will only worsen over time. In years to come, Canada will get more water and the U.S. less; Wood demonstrates provocatively what this will mean for political relations. He concludes with inspiring examples of choices we can all make that will help us preserve our water for future generations."--Book jacket.

Global change possesses serious challenges for water managers and scientists. In mountain areas, where water supplies for half of the world population originate, climate and hydrologic models are still subject to considerable uncertainty. And yet, critical decisions have to be taken to ensure adequate and safe water supplies to billions of people, millions of farmers and industries, without further deteriorating rivers and water bodies. While global warming is known to cause glaciers’ retreat and reduced snow packs around the world, it is not clear that mountain discharge will be lower. What is widely recognised is that water management must be adapted to accommodate significant regime changes. However, this inevitably involves managing transboundary rivers, adding further complexity to putting principles in practice. This book takes global warming and the importance of mountain areas in world water resources as the starting point. First, it provides detailed reviews of the processes going on in several rivers systems and world regions in Europe (Rhône and Ebro), North America (Canadian Rockies, Western US and Mexico), the Middle East (Jordan), Africa (Tunisia, Kenya and South Africa). These contexts provide case studies and examples that show the difficulties and potential for adaptation to global change. Land-use, economics, numerous modeling approaches are some of the cross-cutting issues covered in the chapters. The volume also includes the views of water practitioners, with two chapters authored by members of the US-Canada International Joint Commission, an industrialist from Western Canada and an environmental leader in Spain. By combining a rich set of contexts and approaches, the volume succeeds in offering a view of the global challenges faced by water agencies, international donors and researchers around the world. A case is made in some chapters to seek adaptive strategies rather than trying to reduce or control resources variability. This requires factoring in land-use, social and economic aspects, especially in developing countries. Another conclusion is that complex problems can and must be posed and negotiated with the help of models, mapping techniques and science-based facts. However complex these may be, there are ways to translate them to easily interpretable and visualisations of alternative scenarios and courses of action. This book provides numerous examples of the potential of such approaches to draft environmental programmes solve transboundary disputes and reduce the economic consequences of droughts and climate instability.

The main problem in North America is the location of water resources relative to large population centers where the majority of the freshwater drains away from the bulk of the population. Climate variability and change is a reality. It raises the impact on variability and availability within the continent, which is characterized by its different climatic regions. The hydo-vulnerability of North America is tempered and governed by agreements, laws and institutions such as International Joint Commission (IJC) and International Boundary & Water Commission (IBWC), which have been created to resolve transboundary water issues in a cooperative manner for over a century, resulting in minimal conflicts in the region.