Probability of Elevated Nitrate Concentrations in Groundwater in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007
This raster data set delineates the predicted probability of elevated nitrate concentrations in groundwater
in the Eagle River watershed valley-fill aquifer, Eagle County, North-Central Colorado, 2006-2007. This data
set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle
River Water and Sanitation District, the Town of Eagle, the Town of Gypsum, and the Upper Eagle Regional
Water Authority. This project was designed to evaluate potential land-development effects on groundwater
and surface-water resources so that informed land-use and water management decisions can be made.
This groundwater probability map and its associated probability maps was developed as follows: (1) A point
data set of wells with groundwater quality and groundwater age data was overlaid with thematic layers of
anthropogenic (related to human activities) and hydrogeologic data by using a geographic information system
to assign each well values for depth to groundwater, distance to major streams and canals, distance to
gypsum beds, precipitation, soils, and well depth. These data then were downloaded to a statistical software
package for analysis by logistic regression. (2) Statistical models predicting the probability of elevated nitrate
concentrations, the probability of unmixed young water (using chlorofluorocarbon-11 concentrations and tritium
activities), and the probability of elevated volatile organic compound concentrations were developed using logistic
regression techniques. (3) The statistical models were entered into a GIS and the probability map was constructed.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Colorado Water Science Center",
"@type": "vcard:Contact",
"hasEmail": "mailto:lrarnold@usgs.gov"
}
|
| description | This raster data set delineates the predicted probability of elevated nitrate concentrations in groundwater in the Eagle River watershed valley-fill aquifer, Eagle County, North-Central Colorado, 2006-2007. This data set was developed by a cooperative project between the U.S. Geological Survey, Eagle County, the Eagle River Water and Sanitation District, the Town of Eagle, the Town of Gypsum, and the Upper Eagle Regional Water Authority. This project was designed to evaluate potential land-development effects on groundwater and surface-water resources so that informed land-use and water management decisions can be made. This groundwater probability map and its associated probability maps was developed as follows: (1) A point data set of wells with groundwater quality and groundwater age data was overlaid with thematic layers of anthropogenic (related to human activities) and hydrogeologic data by using a geographic information system to assign each well values for depth to groundwater, distance to major streams and canals, distance to gypsum beds, precipitation, soils, and well depth. These data then were downloaded to a statistical software package for analysis by logistic regression. (2) Statistical models predicting the probability of elevated nitrate concentrations, the probability of unmixed young water (using chlorofluorocarbon-11 concentrations and tritium activities), and the probability of elevated volatile organic compound concentrations were developed using logistic regression techniques. (3) The statistical models were entered into a GIS and the probability map was constructed. |
| distribution |
[
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"title": "Digital Data",
"format": "XML",
"accessURL": "https://doi.org/10.5066/P95NP77V",
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"title": "Original Metadata",
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"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.07324667-8842-432d-b570-8ca0f0e9aa3a.xml"
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|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_07324667-8842-432d-b570-8ca0f0e9aa3a |
| keyword |
[
"Brush Creek",
"CFC",
"Colorado",
"Dotsero, CO",
"Eagle County, CO",
"Eagle River",
"Eagle River Watershed",
"Eagle, CO",
"Edwards, CO",
"Gypsum Creek",
"Gypsum, CO",
"Minturn, CO",
"USGS:07324667-8842-432d-b570-8ca0f0e9aa3a",
"VOC",
"Vail, CO",
"Wolcott, CO",
"chlorofluorocarbons",
"contamination",
"ground water",
"groundwater",
"inlandWaters",
"logistic regression",
"nitrate",
"probability",
"probability of groundwater contamination",
"susceptibility",
"volatile organic compounds",
"vulnerability"
]
|
| modified | 2020-11-17T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -107.115478, 39.545350, -106.275619, 39.717430 |
| theme |
[
"Geospatial"
]
|
| title | Probability of Elevated Nitrate Concentrations in Groundwater in the Eagle River Watershed Valley-Fill Aquifer, Eagle County, North-Central Colorado, 2006-2007 |
