Groundwater and surface-water data collection for Mason County, western Washington, 2016–18

Alison E. Tecca; Lonna M. Frans

doi:10.3133/ds1106

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Groundwater and surface-water data collection for Mason County, western Washington, 2016–18

Alison E. Tecca·Lonna M. Frans

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Abstract

Groundwater levels and surface water flow measurements were collected from August 2016 to September 2018 to provide the Mason Conservation District and other stakeholders with basic knowledge of existing water resources in Mason County, Washington. Additionally, the data were collected with the intent of contributing to informed decision making about groundwater use, management, and conservation throughout the county and for future inclusion in a groundwater model. Data were collected and compiled for 130 sites—110 wells and 20 miscellaneous surface-water discharge sites. In the spring of 2016, field reconnaissance was conducted to locate suitable locations for baseflow discharge measurements to be used for estimating groundwater contribution to surface flow. In the summer of 2016, a field inventory of wells was conducted to acquire locational data and to assess the suitability of the wells for inclusion in a monthly groundwater-level monitoring network. Groundwater levels were measured bimonthly in the 64 wells over 2 years. Streamflow measurements were conducted two times each summer during two summers for each of the 20 surface water sites.

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Source-reported bounding extent: 46.97556750833867° to 47.66261271615866° latitude; -123.51379394531249° to -122.61016845703124° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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Alison E. Tecca, Lonna M. Frans. 2019-03-14. Groundwater and surface-water data collection for Mason County, western Washington, 2016–18. https://doi.org/10.3133/ds1106

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