A multi-bureau Shared-Water Resources Issues Team was created to identify, compile, and communicate significant issues related to the shared-water resources of the U.S.-Mexico border area. Woodward and Durall, as part of the Issues Team, used surface-water drainage basins as the primary basis for defining and delineating the extent of the border area from a shared- water resources perspective, and divided the border area into 8 subareas.
Farming across Borders uses agricultural history to connect the regional experiences of the American West, northern Mexico, western Canada, and the North American side of the Pacific Rim, now writ large into a broad history of the North American West. Case studies of commodity production and distribution, trans-border agricultural labor, and environmental change unite to reveal new perspectives on a historiography traditionally limited to a regional approach. Sterling Evans has curated nineteen essays to explore the contours of “big” agricultural history. Crops and commodities discussed include wheat, cattle, citrus, pecans, chiles, tomatoes, sugar beets, hops, henequen, and more. Toiling over such crops, of course, were the people of the North American West, and as such, the contributing authors investigate the role of agricultural labor, from braceros and Hutterites to women working in the sorghum fields and countless other groups in between. As Evans concludes, “society as a whole (no matter in what country) often ignores the role of agriculture in the past and the present.” Farming across Borders takes an important step toward cultivating awareness and understanding of the agricultural, economic, and environmental connections that loom over the North American West regardless of lines on a map. In the words of one essay, “we are tied together . . . in a hundred different ways.”
This collection of papers examines water management in two of the world’s prominent, arid transboundary areas facing similar challenges. In the Middle East, the chronically water-short Israeli-Palestinian region has recognized the need both to conserve and supplement its traditional water sources. Across the globe on the North American continent, Arizona—a state in the southwestern United States bordering Mexico—relies significantly on the overallocated Colorado River, as well as on non-renewable groundwater supplies. For both regions, sustainable and cost-effective solutions clearly require innovative, multifaceted, and conflict-avoiding approaches. This volume is predicated on the role that “science diplomacy” can play in resolving difficult water-related issues. The history of natural-resources disputes confirms that the scientific approach can reveal ways to overcome division. Experience has shown that scientifically-trained experts who are sensitive to sociopolitical conditions can assist in developing and evaluating feasible water management solutions. The insights and expertise of a distinguished and diverse group of researchers fill these chapters. Contributors include established authorities as well as a number of budding scholars. In a field traditionally dominated by males and by engineers, this collection benefits from significant gender diversity and contributions from a broad spectrum of disciplines. Policymakers, water managers, specialists such as university researchers and consultants, and citizens all have an interest in finding sustainable strategies to address the many water-management issues discussed in this volume. The assembled papers underscore that much work remains to be done.
Published by the American Geophysical Union as part of the Water Science and Application Series, Volume 9. Groundwater recharge, the flux of water across the water table, is arguably the most difficult component of the hydrologic cycle to measure. In arid and semiarid regions the problem is exacerbated by extremely small recharge fluxes that are highly variable in space and time. --from the Preface Groundwater Recharge in a Desert Environment: The Southwestern United States speaks to these issues by presenting new interpretations and research after more than two decades of discipline-wide study. Discussions ondeveloping environmental tracers to fingerprint sources and amounts of groundwater at the basin scalethe critical role of vegetation in hydroecological processesnew geophysical methods in quantifying channel rechargeapplying Geographical Information System (GIS) models to land surface processescoupling process-based vadose zone to groundwater modeling, and more make this book a significant resource for hydmlogists, biogeoscientists, and geochemists concerned with water and water-related issues in arid and semiarid regions.
The Watershed Boundary Dataset (WBD) is a compre- hensive aggregated collection of hydrologic unit data consis- tent with the national criteria for delineation and resolution. This document establishes Federal standards and procedures for creating the WBD as seamless and hierarchical hydrologic unit data, based on topographic and hydrologic features at a 1:24,000 scale in the United States, except for Alaska at 1:63,360 scale, and 1:25,000 scale in the Caribbean. The data within the WBD have been reviewed for certification through the 12-digit hydrologic unit for compliance with the criteria outlined in this document. Any edits to certified data will be reviewed against this standard prior to inclusion. Although not required as part of the framework WBD, the guidelines contain details for compiling and delineating the boundar- ies of two additional levels, the 14- and 16-digit hydrologic units, as well as the use of higher resolution base information to improve delineations. The guidelines presented herein are designed to enable local, regional, and national partners to delineate hydrologic units consistently and accurately. Such consistency improves watershed management through efficient sharing of information and resources and by ensuring that digital geographic data are usable with other related Geo- graphic Information System (GIS) data.
