...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ground water >Transboundary Impacts on Regional Ground Water Modeling in Texas
【24h】

Transboundary Impacts on Regional Ground Water Modeling in Texas

机译：德克萨斯州区域地下水建模的跨界影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Recent legislation required regional grassroots water resources planning across the entire state of Texas. The Texas Water Development Board (TWDB), the state's primary water resource planning agency, divided the state into 16 planning regions. Each planning group developed plans to manage both ground water and surface water sources and to meet future demands of various combinations of domestic, agricultural, municipal, and industrial water consumers. This presentation describes the challenges in developing a ground water model for the Llano Estacado Regional Water Planning Group (LERWPG), whose region includes 21 counties in the Southern High Plains of Texas. While surface water is supplied to several cities in this region, the vast majority of the regional water use comes from the High Plains aquifer system, often locally referred to as the Ogallala Aquifer. Over 95% of the ground water demand is for irrigated agriculture. The LERWPG had to predict the impact of future TWDB-projected water demands, as provided by the TWDB, on the aquifer for the period 2000 to 2050. If detrimental impacts were noted, alternative management strategies must be proposed. While much effort was spent on evaluating the current status of the ground water reserves, an appropriate numerical model of the aquifer system was necessary to demonstrate future impacts of the predicted withdrawals as well as the effects of the alternative strategies. The modeling effort was completed in the summer of 2000. This presentation concentrates on the political, scientific, and nontechnical issues in this planning process that complicated the modeling effort. Uncertainties in data, most significantly in distribution and intensity of recharge and withdrawals, significantly impacted the calibration and predictive modeling efforts. Four predictive scenarios, including baseline projections, recurrence of the drought of record, precipitation enhancement, and reduced irrigation demand, were simulated to identify counties at risk of low final ground water storage volume or low levels of satisfied demand by 2050.
机译：最近的立法要求在整个德克萨斯州进行区域性基层水资源规划。该州的主要水资源规划机构德克萨斯州水资源开发委员会（TWDB）将州划分为16个规划区域。每个计划小组都制定了计划来管理地下水和地表水源，并满足家庭，农业，市政和工业用水消费者的各种组合的未来需求。本演讲介绍了为Llano Estacado区域水规划小组（LERWPG）开发地下水模型所面临的挑战，该区域的地区包括德克萨斯州南部高平原的21个县。尽管向该地区的几个城市提供了地表水，但该地区的用水量绝大部分来自高平原含水层系统，在当地通常称为Ogallala含水层。地下水需求的95％以上用于灌溉农业。 LERWPG必须预测TWDB提供的未来TWDB预测的需水量对2000年至2050年期间含水层的影响。如果注意到不利影响，则必须提出替代管理策略。在花费大量精力评估地下水储备的当前状况的同时，含水层系统的适当数值模型对于证明预测的开采量的未来影响以及替代策略的影响是必要的。建模工作已于2000年夏季完成。本演示文稿着重于此计划过程中使建模工作复杂化的政治，科学和非技术问题。数据的不确定性，最主要的是充放电的分布和强度，极大地影响了校准和预测建模工作。对四种预测情景进行了模拟，包括基准线预测，旱灾复发，降水增加和灌溉需求减少，以识别到2050年面临最终地下水储量低或满足需求水平低的县。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号