Forecasting acute rainfall driven E. coli impacts in inland rivers based on sewer monitoring and field runoff.

Forecasting acute rainfall driven E. coli impacts in inland rivers based on sewer monitoring and field runoff.
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根据下水道监测和田间径流预测急性降雨驱动的大肠杆菌对内陆河流的影响。

DOI:
10.1016/j.watres.2023.120838
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发表时间:
2023
期刊:
影响因子:
12.8
通讯作者:
Suslovaite V
Suslovaite V
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Suslovaite V

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Surface water quality is frequently impacted by acute rainfall driven pollutant sources such as sewer overflows. Understanding the risk of exposure from faecal pollution from short term impacts is challenging due to a paucity of high-resolution data from river systems. This paper proposes practical modelling approach for forecasting arrival time and durations of elevatedE. colilevels based on hydrological routing of catchment source loadings, characterized by distributed and remote sensing techniques (including sewer overflow monitoring). The model is calibrated and validated using new high resolutionE. colidatasets from a UK catchment featuring both diffuse field runoff and storm overflow impacts. Hourly/Bihourly sampling ofE. coliwas undertaken in the river following different rainfall events across a range of seasonal conditions. The model provides a good estimate of arrival times and durations of elevatedE. coliperiods following rainfall events. Model simulations suggest that key sources in the catchment are event specific, with sewer overflow spills being more significant following short, intense rainfall events.
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