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Data for Elevated Manganese Concentrations in United States Groundwater, Role of Land Surface-Soil-Aquifer Connections

Dates

Publication Date
Start Date
1988
End Date
2017

Citation

McMahon, P.B., Belitz, K., Reddy, J.E., and Johnson, T.D., 2018, Data for Elevated Manganese Concentrations in United States Groundwater, Role of Land Surface-Soil-Aquifer Connections: U.S. Geological Survey data release, https://doi.org/10.5066/P9Y4GOFQ.

Summary

Chemical data from 43,334 wells were used to examine the role of land surface-soil-aquifer connections in producing elevated manganese concentrations (>300 µg/L) in United States (U.S.) groundwater. Elevated manganese and dissolved organic carbon (DOC) concentrations were associated with shallow water tables and organic-carbon rich soils, suggesting soil-derived DOC supported manganese reduction. Manganese and DOC concentrations were higher near rivers than farther from rivers, suggesting river-derived DOC also supported manganese reduction. Anthropogenic nitrogen may also affect manganese concentrations in groundwater. In parts of the northeastern U.S. containing poorly buffered soils, ~40% of the samples with elevated manganese concentrations [...]

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Attached Files

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Elevated_Mn_Concentrations_Supporting_Information_Data_S1.xlsx
“Table S1. Chemical and ancillary data for wells (Excel file)”
11.11 MB
Elevated_Mn_Concentrations_Supporting_Information_Data_S1.csv
“Table S1. Chemical and ancillary data for wells (comma-separated values file)”
8.84 MB
Elevated_Mn_Concentration_Metadata.xml
“Metadata for Table S1”
Original FGDC Metadata

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61.34 KB

Purpose

Whether elevated Mn concentrations in U.S. groundwater largely cluster near the water table and can be explained by land surface-soil-aquifer connections is unknown, but understanding where and why elevated Mn concentrations occur in groundwater could help those who consume groundwater to avoid zones of Mn enrichment. These data support the effort that examines the occurrence and distribution of elevated Mn concentrations in U.S. groundwater and their relation to land surface-soil-aquifer connections. In this study, the Mn HBSL (300 µg/L) is used to define elevated Mn concentrations. This work uses chemical data from 43,334 wells from the USGS National Water Information System (NWIS) database, greatly expanding the coverage of previous national surveys of Mn in U.S. groundwater (Ayotte et al. 2011; Desimone et al. 2014).

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  • National Water-Quality Assessment Project
  • USGS Data Release Products

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Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9Y4GOFQ

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