The influence of socioeconomic and spatial variables on total maximum daily load progress in the United States

IF 1.5 4区环境科学与生态学 Q4 WATER RESOURCES

Water Policy Pub Date : 2023-11-16 DOI:10.2166/wp.2023.112

Charitha Gunawardana, Walter McDonald

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引用次数: 0

Abstract

The total maximum daily load (TMDL) program requires each state in the United States to assess their water bodies, list those that are impaired, and develop TMDL plans or programs to restore them. However, the impact that spatial and socioeconomic variables have on TMDL progress is unknown. This study seeks to fill this gap through a nation-wide analysis of the influence of spatial and socioeconomic variables on indicators of TMDL progress. To do so, data were collected and analyzed for each state, including indicators of TMDL progress, spatial variables, and socioeconomic data. Then, these data were applied to identify overall trends and to define the relationships between indicators of TMDL progress and spatial and socioeconomic variables. Results indicate that the size of a state, the length of total streams, and median household income are related to the percentage of streams that are assessed within a state. In addition, states largely followed similar patterns in TMDL progress based on the US Environmental Protection Agency region that they were within, indicating that location plays a large role. Overall, this study helps to contextualize progress in TMDL development and aid in our understanding of factors that influence the implementation of water quality programs.

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美国社会经济和空间变量对最大日负荷总量进展的影响

最大日负荷总量 (TMDL) 计划要求美国各州对其水体进行评估，列出受损水体，并制定 TMDL 计划或方案来恢复这些水体。然而，空间和社会经济变量对 TMDL 进展的影响尚不清楚。本研究试图通过在全国范围内分析空间和社会经济变量对 TMDL 进展指标的影响来填补这一空白。为此，我们收集并分析了各州的数据，包括 TMDL 进展指标、空间变量和社会经济数据。然后，应用这些数据确定总体趋势，并界定 TMDL 进展指标与空间和社会经济变量之间的关系。结果表明，州的面积、溪流总长度和家庭收入中位数与州内接受评估的溪流比例有关。此外，根据各州所在的美国环境保护局区域，各州在 TMDL 进展方面基本遵循相似的模式，这表明地理位置起着重要作用。总之，这项研究有助于了解 TMDL 开发的进展情况，有助于我们理解影响水质计划实施的因素。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water Policy 环境科学-水资源

CiteScore

3.10

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Water Policy will publish reviews, research papers and progress reports in, among others, the following areas: financial, diplomatic, organizational, legal, administrative and research; organized by country, region or river basin. Water Policy also publishes reviews of books and grey literature.