The allocation of water resources is typically accomplished within the framework of water allocation systems (WAS). In general, a WAS sets priorities, applies rules, and organizes responses to a range of water allocation scenarios. This research presents a comprehensive study of water allocation strategies and provides a conceptual framework of principles and guidelines for designing, assessing, implementing and supporting WAS. The voluminous compilation of international treaties and conventions, interstate compacts, intrastate administrative documentation, and scientific/engineering literature was researched in order to identify different water allocation strategies and mechanisms. From this analysis eight fundamental areas of WAS were identified: water rights, determination of water allotment, administrative systems, reservoir storage considerations, system reliability, multiple uses, instream flow requirements, and drought management. The systematic scrutiny of these eight areas at the international, interstate, and intrastate levels defined the conceptual framework for assessing WAS. The Texas experience with regard to its Water Availability Modeling system is also reviewed with particular emphasis on the application of the Water Rights Analysis Package (WRAP) model in supporting water allocation efforts. The Lower Rio Grande WAS was used as a case study to demonstrate how the principles presented in the conceptual framework can be used to assess water allocation issues and identify alternative strategies. Three WRAP simulation studies utilizing several components of the conceptual framework were performed in order to assess the Lower Rio Grande WAS. The simulations focused on three of the major water allocation issues of the Texas Rio Grande: reallocation among uses, instream flow requirements, and drought management. The simulations showed several deficiencies in the Lower Rio Grande WAS, particularly regarding the size of the domestic-municipal-industrial (DMI) reserve and its effect on the reliability of other uses. The simulation results suggest that water from the DMI can be liberated to be used by irrigators and to support environmental flows without affecting the reliability to municipal users. Several strategies were proposed that can potentially improve the overall efficiency of the system. Nonetheless, implementing new strategies and water allocation policies in the Lower Rio Grande WAS would require considerable changes in regulation policies.

CHDS State/Local / Approved for public release, distribution is unlimited / To defend American agriculture against foreign or domestic terrorism, it is essential that states build multi-state partnerships to provide for the collaborative plans, programs and operations needed to protect the nations food security. The National Homeland Security Strategy puts states on the front lines in the war against terrorism---including the struggle to secure the agriculture industry from potentially devastating attack. The issues surrounding agro-terrorism are vast and complex and the resources of the Federal government to address these issues are limited and overextended. If states attempt to address this threat independently, important opportunities to reduce vulnerability and enhance capability will be lost. To achieve the capabilities needed for agro terrorism detection, mitigation, preparedness and response, states must collaborate to build the partnerships and programs their citizens require. This thesis argues multi-state partnerships are critical to defeating this threat as well as providing a robust response to an attack. Whether intentionally introduced or naturally occurring , infectious diseases can easily cross state borders before an outbreak is even detected. States must be prepared to act quickly to mitigate the effects of any crisis. There is a significant opportunity for states to strengthen their abilities to provide for a stronger agriculture counter terrorism preparedness system. The states can further their ability to combat attacks on agriculture actively by demonstrating leadership in implementing administrative agreements and ultimately adopting compact(s) between states as well as with the private sector. / Civilian, Homeland Security Advisor and Emergency Management Administrator, Iowa Homeland Security and Emergency Management Division