RAPID: Impact of extreme flooding on groundwater quality following Hurricane Ida

RAPID：飓风艾达后极端洪水对地下水质量的影响

• 批准号: 2219078
• 负责人: Samendra Sherchan
• 金额: $ 5万
• 依托单位: Morgan State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2023-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2219078&HistoricalAwards=false
• 关键词: RAPID; Impact; extreme; flooding; groundwater

Hurricane Ida landed near Port Fourchon, Louisiana on August 29, 2021, as a Category 4 major hurricane. Ida was a deadly hurricane with devastating coastal storm surges and destructive winds. It brought heavy rainfall in Southern Louisiana and caused catastrophic flooding in many rural areas mainly Houma and LaPlace, LA. Such large-scale flooding has the potential to transport chemical agents and microbial pathogens and contaminate groundwater. Water wells in the region affected by flooding will be sampled, to assess groundwater quality. The goal of this study is to advance knowledge of the impact of extreme flooding on groundwater quality in coastal Louisiana following hurricane Ida. The sampling campaign includes collecting 150 samples from groundwater wells, at 1, 3 and 6 months after Hurricane Ida. The study will leverage sampling prior to the event for comparison to post-hurricane data. This project is a time-sensitive and unique opportunity to collect perishable data and improve understanding of the extent of contamination in floodwaters from inland areas to groundwater. Specific objectives are to: (i) determine the source(s) of fecal pollution, heavy metals, and pathogen loads in floodwaters and groundwater post Hurricane Ida, ii) utilize 16S rRNA amplicon sequencing to characterize groundwater microbial community changes and iii) Map the spatial distribution of chemical and microbial contamination to identify households at risk of toxic contaminant exposure. The findings from this study will bring visibility the needs for protection and management of groundwater resources. Information will be provided to well owners that can be used to develop guidance for protection of groundwater supplies after severe flooding. It will also aid in future research projects such as evaluation and development of small disinfection technologies for the control and treatment of contaminants in groundwater.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual meritand broader impacts review criteria.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

艾达飓风于2021年8月29日以4类主要飓风降落在路易斯安那州四chon港附近。艾达（Ida）是一场致命的飓风，沿海风暴潮流和破坏性风。它在路易斯安那州南部带来了大雨，并在许多农村地区造成了灾难性的洪水，主要是洛杉矶的Houma和Laplace。如此大规模的洪水有可能运输化学药物和微生物病原体并污染地下水。将采样受洪水影响的地区的水井，以评估地下水质量。这项研究的目的是促进对艾达飓风后路易斯安那州沿海地区极端洪水对地下水质量的影响的了解。抽样活动包括在艾达飓风后1、3和6个月从地下水井收集150个样本。该研究将在事件之前利用采样，以与赫鲁里卡后数据进行比较。该项目是一个时间敏感且独特的机会，可以收集易腐烂的数据并提高对从内陆地区到地下水的洪水污染程度的了解。特定目标是：（i）确定洪水和地下水飓风后艾达（IDA）的粪便污染，重金属和病原体负荷的来源，ii）利用16S rRNA扩增子测序来表征地下水微生物社区社区和iii的特征，iii）映射了化学和微生物的空间分布，以识别污染物的空间分布，以识别污染物的质量造成污染物的质量变化。这项研究的发现将带来可见性保护和管理地下水资源的需求。 将向所有者提供信息，这些井所有者可用于制定严重洪水后保护地下水供应的指南。它还将有助于未来的研究项目，例如评估和开发地下水中污染物的控制和处理，以反映NSF的法定任务，并认为值得通过基金会的知识分子和更广泛的Infection Infection Internition Indertional的授权，并反映了NSF的法定宣教型，并以其智力上的良好影响，被认为值得通过评估来提供支持。更广泛的影响审查标准。