Areas contributing recharge to priority wells in valley-fill aquifers in the Neversink River and Rondout Creek drainage basins, New York:

In southeastern New York, the villages of Ellenville, Wurtsboro, Woodridge, the hamlet of Mountain Dale, and surrounding communities in the Neversink River and Rondout Creek drainage basins rely on wells that pump groundwa- ter from valley-fill glacial aquifers for public water supply. Glacial aquif...

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1. Verfasser: Corson-Dosch, Nicholas T. (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: Reston, Virginia U.S. Department of the Interior, U.S. Geological Survey 2022
Schriftenreihe:Scientific investigations report 2021-5112
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Online-Zugang:kostenfrei
Zusammenfassung:In southeastern New York, the villages of Ellenville, Wurtsboro, Woodridge, the hamlet of Mountain Dale, and surrounding communities in the Neversink River and Rondout Creek drainage basins rely on wells that pump groundwa- ter from valley-fill glacial aquifers for public water supply. Glacial aquifers are vulnerable to contamination because they are highly permeable and have a shallow depth to water table. To protect the quality of these water resources, water managers need accurate information about the areas that contribute recharge to production wells that pump from these aquifers. The New York State Department of Environmental Conservation and the New York State Department of Health designated eight priority wells in this region for which water supply protection is of primary concern.The U.S. Geological Survey, in cooperation with the New York State Department of Environmental Conservation and the New York State Department of Health, began an investigation in 2019 with the general objectives of (1) improving under- standing of regional groundwater-flow system, (2) delineating areas contributing recharge to eight priority production wells, and (3) quantifying the uncertainty of these contributing areas in a probabilistic way that can be used to inform decision- making related to priority well source-water protection. To complete these objectives, a MODFLOW 6 groundwater model was created encompassing the eight priority wells and the surrounding flow system, which includes parts of the Neversink River and Rondout Creek Basins in Sullivan County and Ulster County, New York. The model was built using Python tools (such as flopy, modflow-setup, and sfr- maker) that facilitate transparent and repeatable model devel- opment using existing datasets. The model parameters were estimated with a stepwise approach using an iterative ensem- ble smoother implementation of the Parameter ESTimation software PEST++ (version 5.0.0).
Beschreibung:"Prepared in cooperation with New York State Department of Environmental Conservation and New York State Department of Health.
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