Public supply groundwater wells associated with Hydrogeologic Mapping Units
Dates
Publication Date
2021-09-28
Time Period
2021-03
Citation
Johnson, T.D., Belitz, K., Kauffman, L.J., Wilson, J.T., and Watson, E., 2021. Estimated equivalent population using groundwater for public supply domestic use in the conterminous U.S. 2010, hydrogeologic mapping units, and wells used (ver. 2.0, March 2023): U.S. Geological Survey data release, https://doi.org/10.5066/P97Y8D6Q.
Summary
Data from more than 75,000 community public supply wells were acquired from national and state agencies. Using the information provided by the agencies, along with surficial and bedrock geologic maps, the wells were assigned to a national Principal Aquifer (PA) as defined in USGS (2003) or a Secondary Hydrogeologic Region (SHR) as defined in Belitz et al. (2018). Collectively, both PAs and SHRs are referred to as Hydrogeologic Regions (HRs). The HR identifies the primary source of water for the well. The locations of the wells were generalized so that they plot in the center of a 2 kilometer square grid. The county information provided identifies the county the well is located within based on it’s actual location, not the generalized [...]
Summary
Data from more than 75,000 community public supply wells were acquired from national and state agencies. Using the information provided by the agencies, along with surficial and bedrock geologic maps, the wells were assigned to a national Principal Aquifer (PA) as defined in USGS (2003) or a Secondary Hydrogeologic Region (SHR) as defined in Belitz et al. (2018). Collectively, both PAs and SHRs are referred to as Hydrogeologic Regions (HRs). The HR identifies the primary source of water for the well. The locations of the wells were generalized so that they plot in the center of a 2 kilometer square grid. The county information provided identifies the county the well is located within based on it’s actual location, not the generalized location. A total of 76,354 wells were assigned to an HR, 41 wells were assigned to "basement" or "bedrock" because there was not enough information to assign to a specific HR.
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PublicSupply_Wells.metadata.xml Original FGDC Metadata
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Related External Resources
Type: Related Primary Publication
Johnson, T.D., Belitz, K., Kauffman, L.J., Watson, E., and Wilson, J.T., 2022, Populations using public-supply groundwater in the conterminous U.S. 2010; Identifying the wells, hydrogeologic regions, and hydrogeologic mapping units: Science of The Total Environment, v. 806, p. 150618, https://doi.org/10.1016/j.scitotenv.2021.150618.
These wells were used in support of a publication to create a national map of community pubic supply based Hydrogeologic Mapping Units (HMUs). An HMU is a mapped polygon, within which, all public supply wells have a common source of water. The common source of water can be a single HR or multiple HRs, as HRs can overlap one another.
