National Water-Quality Assessment (NAWQA) Program - High Plains Regional Groundwater (HPGW) Study

Reconnaissance Study - central High Plains

One objective of NAWQA's High Plains Regional Groundwater study is to evaluate the effect of irrigated agriculture on the quality of recently recharged water in the Ogallala Formation of the Central High Plains aquifer. Approximately 23 percent of the cropland overlying the Ogallala Formation is irrigated (U.S. Department of Agriculture, 1999).

The NAWQA program generally defines recently recharged groundwater to be water recharged in the last 50 years. The water table in the Ogallala Formation is separated from overlying land-use practices by as much as 400 feet of unsaturated sediments. Consequently, one may hypothesize that recently recharged water is not present in the formation. The U.S. Geological Survey conducted a reconnaissance study in 1999 to establish (a) if recently recharged water was present in the Ogallala Formation underlying irrigated cropland and (b) if agricultural land-use practices affect water quality. Results from the reconnaissance study will be used to determine whether a full-scale land-use study is warranted.

Figure 1

Shows the spatial distribution of the reconnaissance wells.
Shows the spatial distribution of the reconnaissance wells.

Figure 1
Well No.
Site ID
WELL 101 375855100484001
WELL 102 375734100452301
WELL 103 374220100422501
WELL 104 365610101484301
WELL 105 363817101213101

View or download the water-quality data for each well within the entire data set below.

View or download entire environmental tab delimited data set

View or download quality-assurance data for this data set

A coding guide contains codes and descriptions for selected parameters in the data sets.

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URL: https://co.water.usgs.gov/nawqa/hpgw/datarep/recon/RECON.html
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Page Last Modified: Monday, 13-Mar-2017 17:34:58 EDT