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Hydrologic Events and Water Quality in the Pigeon River, Ottawa County, Michigan

机译:密歇根州渥太华县鸽子河的水文事件和水质

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摘要

The Pigeon River Drains a 16,765-ha agricultural watershed in western Ottawa County, Michigan and discharges into south-central Lake Michigan. Extensive areas of wetlands in the Upper watershed were drained in the 1920s, causing significantly altered hydrology character- Ized by flashy discharges during storms and periods of snowmelt. We studied stream chemistry And hydrology for a four-year period between September, 1996, and October, 2000, to Determine water quality status, to estimate annual nutrient exports, and to evaluate the effects Of different seasonal flow types. Results of our study confirmed that the upper reaches of the Pigeon River experience chronically degraded water quality, with contributions from both Nonpoint and point sources.
机译:鸽子河排泄了密歇根州渥太华县西部一个16,765公顷的农业流域,并排入了密歇根州中南部的湖泊。上流域的大量湿地在1920年代被排干,导致水文状况发生了显着变化,其特征是在暴风雨和融雪期间出现了闪闪发光的水流。我们在1996年9月至2000年10月的四年中研究了河流化学和水文学,以确定水质状况,估算年度养分出口量以及评估不同季节流量类型的影响。我们的研究结果证实,Pigeon河的上游水质长期恶化,这归因于非点源和点源。

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