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Physical, Chemical, and Microbial Quality of Floodwaters in Houston Following Hurricane Harvey

机译：哈维飓风过后休斯敦洪水的物理，化学和微生物质量

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摘要

Hurricane Harvey brought more than 50 in. of rainfall to some areas of the Greater Houston Metro area (GHMA) starting on August 25, 2017; the Hurricane was also associated with damage to environmental infrastructure such as wastewater facilities, superfund sites, and leaks and spills from industrial and municipal facilities. This study collected post-Harvey water quality data in multiple streams for several weeks after the Hurricane. In addition to measuring impact, the study compared the observed concentrations of several physical, chemical, and microbial constituents and water properties to their historical counterparts in an effort to understand the water quality impacts of Harvey on the natural water systems within the GHMA. Unusual water quality findings such as low pH were observed that likely had acute and chronic effects on ecosystems including the loss of oyster populations in Galveston Bay. In-stream microbial concentrations, using E. coli as the indicator, were within historical norms typically reported for the GHMA. The observed levels of measured dissolved metals post Harvey, while relatively low, when multiplied by the significant volume of water discharged from bayous to Galveston Bay, meant the delivery of a substantial load of trace metals to the estuary. Specifically, the load in the particulate phase would be expected to accumulate and gradually repartition to the dissolved phase for a long period of time. Total metal concentrations, when elevated relative to their historical counterparts, could be associated with the presence of industrial activities. Overall, anthropogenic activities including the presence of hydraulic flood control structures, local runoff from industrialized areas, and active superfund sites were recognized as key factors affecting short-term acute water quality impacts. Watersheds with very little human alterations experienced minimal water quality changes and had relatively rapid recoveries post-Harvey.
机译：自2017年8月25日起，哈维飓风为大休斯顿都会区（GHMA）的某些地区带来了超过50英寸的降雨；飓风还与环境基础设施受损有关，例如废水设施，超级基金场所以及工业和市政设施的泄漏和溢出。这项研究在飓风过后的几周内收集了多条河流的哈维后水质数据。除了衡量影响之外，该研究还将观察到的几种物理，化学和微生物成分的浓度以及水的特性与其历史对应物进行了比较，以了解Harvey对GHMA内自然水系统的水质影响。观察到异常的水质发现，例如低pH值，这可能会对生态系统产生急性和慢性影响，包括加尔维斯顿湾的牡蛎种群减少。使用大肠杆菌作为指标的流内微生物浓度在GHMA通常报告的历史标准之内。观测到的哈维后测得的溶解金属含量，虽然相对较低，但乘以从Bayous向加尔维斯顿湾排放的大量水，则意味着向河口输送了大量的痕量金属。具体而言，颗粒相中的负载将长期积累并逐渐重新分配至溶解相。总金属浓度相对于其历史对应浓度升高时，可能与工业活动有关。总体而言，人为活动包括水力防洪结构的存在，工业化地区的局部径流以及活跃的超级基金场所被认为是影响短期急性水质影响的关键因素。人为改变很少的集水区水质变化最小，哈维后恢复相对较快。

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  • 来源
    《Environmental Science & Technology》 |2019年第9期|4832-4840|共9页
  • 作者

    Kiaghadi Amin; Rifai Hanadi S.;

  • 作者单位

    Univ Houston, Civil & Environm Engn, Room N138,Engn Bldg 1,4726 Calhoun, Houston, TX 77204 USA;

    Univ Houston, Civil & Environm Engn, Room N138,Engn Bldg 1,4726 Calhoun, Houston, TX 77204 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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