Heal, E.N., and Tollett, R.W., 2020, Water-quality and grain-size data collected at three sites near the Peason Ridge training area and two sites near the Main Post at the Joint Readiness Training Center and Fort Polk, 2015–2016: U.S. Geological Survey data release, https://doi.org/10.5066/F74M93FJ.
Summary
In 2015-2016, physicochemical properties and chemical characteristics of stream water, bed sediment, groundwater, and soil were determined in watersheds located outside of, but in proximity to, the Peason Ridge Training Area and Main Post at the Joint Readiness Training Center and Fort Polk boundaries to document background trace element concentrations. Water samples were analyzed for physicochemical properties, major inorganic ions, selected trace elements, and dissolved organic carbon. Selected trace elements included antimony, arsenic, cadmium, copper, iron, lead, manganese, mercury, and zinc. Stream bed-sediment and soil samples were analyzed for major inorganic ions, selected trace elements, and grain size distribution. Surface-water [...]
Summary
In 2015-2016, physicochemical properties and chemical characteristics of stream water, bed sediment, groundwater, and soil were determined in watersheds located outside of, but in proximity to, the Peason Ridge Training Area and Main Post at the Joint Readiness Training Center and Fort Polk boundaries to document background trace element concentrations. Water samples were analyzed for physicochemical properties, major inorganic ions, selected trace elements, and dissolved organic carbon. Selected trace elements included antimony, arsenic, cadmium, copper, iron, lead, manganese, mercury, and zinc. Stream bed-sediment and soil samples were analyzed for major inorganic ions, selected trace elements, and grain size distribution.
Surface-water samples were collected near the downstream transect of each stream reach. Monitoring wells were located adjacent to the stream reach and in close proximity to the surface-water sampling sites. Bulk bed-sediment samples were collected during normal low-flow conditions. Each sample consisted of a composite sample from five locations (right edge, left edge, and center of a middle transect, then upstream and downstream of the middle transect) within each stream reach. Three soil samples, one from hilltops, one from side slopes, and one from riparian zones, were collected from areas adjacent to each stream reach. Each soil sample consisted of 5 to 10 grab samples collected by a 21-inch-long, 5/8-inch internal diameter stainless-steel hand auger and composited in Teflon lined pans. All samples were collected following USGS sampling protocols.
This data release provides database and mapping information for assessment of trace element concentrations in stream water, bed sediment, groundwater, and soil found in relatively pristine and undisturbed watersheds in proximity to watersheds used for military training.
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water_quality_data_FGDC.xml Original FGDC Metadata
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12.18 KB
application/fgdc+xml
appendix_tables.zip
29.99 KB
application/zip
site_grainsize_data.zip
61.71 KB
application/zip
Related External Resources
Type: Related Primary Publication
Tollett, R.W., 2022, Aquatic-life criteria compared to concentrations of cadmium, copper, lead, and zinc in streams near Fort Polk Military Reservation, Louisiana, December 2015–August 2016: U.S. Geological Survey Scientific Investigations Report 2021–5101, 40 p., https://doi.org/10.3133/sir20215101.
This data set provides the water-quality and grain-size data from water and sediment samples collected at surface-water sites. The zip folder called "site_grainsize_data" consists of five folders called "site1_grainsize," "site2_grainsize," "site3_grainsize," "site4_grainsize," and "site5_grainsize." Each site folder contains two CSV files with grain-size data and their related metadata files for the surface-water sites. The zip folder called "appendix_tables" contains 14 appendix tables that provide the concentrations of chemical data and accompanying metadata. Selected physicochemical data are presented in table 1 for stream water and table 2 for groundwater. Major inorganic ion data are presented in table 3 for stream water, table 4 for groundwater, table 5 for bed sediment, and table 6 for soil. Selected trace element data are presented in table 7 for stream water, table 8 for groundwater, table 9 for stream bed sediment, and table 10 for soil. Selected nutrients and organic carbon are presented in table 11 for stream water and table 12 for groundwater. Grain size analyses are presented in table 13 for bed sediment and table 14 for soil.
