Skip to main content
  1. ScienceBase Catalog
  2. USGS Data Release Products
  3. Groundwater data, predictor variables, and rasters used for predicting redox conditions in the glacial aquifer, northern continental United States

Groundwater data, predictor variables, and rasters used for predicting redox conditions in the glacial aquifer, northern continental United States

Dates

Publication Date
Start Date
1988
End Date
2018

Citation

Elliott, S.M., Erickson, M.L., Reddy, J.E., and Sharpe, J.B., 2021, Groundwater data, predictor variables, and rasters used for predicting redox conditions in the glacial aquifer, northern continental United States: U.S. Geological Survey data release, https://doi.org/10.5066/P96KKPMD.

Summary

This data release contains input data used in model development and TIF raster files used to predict the probability of low dissolved oxygen (DO) and high dissolved iron (Fe) in groundwater within the glacial aquifer system in the northern continental United States. Input data include measured DO and Fe concentrations at groundwater wells, and associated predictor variable data. The probability of low DO and high Fe was predicted using boosted regression tree methods using the gbm package in R (v. 4.0.0) in RStudio (v. 1.2.5042). The response variables for individual models were the occurrence of: (1) DO ≤0.5 mg/L, (2) DO ≤2 mg/L, and (3) Fe >100 µg/L. Water-quality data were compiled from three sources, as described in Wilson and [...]

Contacts

Point of Contact :
Sarah M Elliott
Originator :
Sarah M Elliott, Melinda L Erickson, James E Reddy, Jennifer B Sharpe
Metadata Contact :
Jennifer B Sharpe
Distributor :
U.S. Geological Survey - ScienceBase
Publisher :
U.S. Geological Survey
SDC Data Owner :
Earth System Processes Division
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

GW_Redox_Glacial_Aquifer_Metadata.xml
“Metadata”
Original FGDC Metadata
View 		44.6 KB application/fgdc+xml
DO2_Output.zip
“Original model output for DO 2 mg/L model” 		16.1 MB application/zip
DOpt5_Output.zip
“Original model output for DO 0.5 mg/L model” 		90.8 MB application/zip
Fe_Output.zip
“Original model output for Fe model” 		88.72 MB application/zip

“Model input rasters” 		6.91 GB application/zip
GLAC_do2.RDS
“Model object for DO model at 2 mg/L threshold” 		6.23 MB application/x-gzip
GLAC_dopt5.RDS
“Model object for DO model at 0.5 mg/L threshold” 		6.46 MB application/x-gzip
GLAC_Fe.RDS
“Model object for Fe model at 100 µg/L threshold” 		5.7 MB application/x-gzip
do2.txt
“DO data and predictor variables for DO model at 2 mg/L threshold” 		9.41 MB text/plain
dopt5.txt
“DO data and predictor variables for DO model at 0.5 mg/L threshold” 		8.84 MB text/plain
fe.txt
“Fe data and predictor variables for Fe model at 100 ug/L threshold” 		8.56 MB text/plain
DataDictionary.csv
“Explanations and sources of predictor variables” 		32.17 KB text/csv
GLAC_redox.R
“R script for running models” 		18.27 KB text/x-rsrc
modelgeoref.txt
“Extent of study area” 		786 Bytes text/plain
readme.txt
“Description of data release contents” 		12.21 KB text/plain

Purpose

This data set was used to develop models to predict the probability of low dissolved oxygen (<=0.5 or 2 mg/L) and high iron (>100 μg/L) in groundwater within the glacial aquifer system in the northern United Sates, as indicators of redox in support of the larger work cited above (Erickson et al, 2021).

Map

Spatial Services

ScienceBase WMS

Communities

  • USGS Data Release Products

Tags

Provenance

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P96KKPMD

Item Actions

View Item as ...

JSON ATOM ISO XML

Save Item as ...

JSON FGDC MODS XML ISO XML

View Item...

Metrics