skip all navigation
skip banner links
skip primary navigation

Open-file Report - 616
Evaluation of water-level trends using spatiotemporal kriging in the Mimbres Basin, southwest New Mexico

Geoffrey Rawling

2021

cover

Water-level measurements in the Mimbres Basin made in early 2020 were combined with data extending back to 1980 to characterize water level trends in the region. The geostatistical method of spatiotemporal kriging was used to create water-level maps every five years from 1980 until 2020. Changes in water-levels over these five-year intervals were calculated. Compared to traditional spatial kriging, the spatiotemporal approach offers improved precision, more realistic maps of water levels and water-level changes, fewer artifacts due to changing well networks over time, and overall less uncertainty in predictions.

Several notable patterns since 1980 are revealed in the sequential maps. From Deming to Columbus, water levels have declined up to 75 feet. Water-level declines and expansion of cones of depression appear to have slowed south of Deming and increased around Columbus in the past ten years. Water levels west of Red Mountain, east of the Florida Mountains, and northeast of Columbus have risen as much as 32 feet, presumably as a result of decline in pumping for irrigation in these areas that has resulted in flattening of cones of depression. The vicinity of Whitewater and Faywood shows net water-level rises over the 40 year period, but declines have occurred in the past ten years. Water levels have varied considerably along the reach of the Mimbres River south of Faywood, where most of the river’s flow infiltrates.

The spatiotemporal kriging approach is more challenging than other interpolation methods traditionally used in hydrogeology. However, the cost in funds and staff-hours of field studies to gather water-level data has always been high and continues to rise. Therefore it is prudent to analyze the data collected at such great expense with methods that will extract the most useful information. The present work builds on other recent studies and demonstrates that spatiotemporal kriging of water-level data is superior to spatial kriging in this regard.

$10.00 Buy Now
CD or DVD-ROM format CD or DVD-ROM format

Also available as a free download.

Download

Open-file Reports are available as free downloads or on CD/DVD-ROM (see below). Note that these reports are subject to frequent revisions and may be unavailable when being modified. The Last Modified date listed here reflects when a file was last saved and may not be the date this report was last revised.

File Name Size Last Modified
OFR_616.pdf 52.79 MB 06/23/2021 02:43:50 PM
OFR_616_complete.zip 51.16 MB 06/23/2021 03:13:36 PM
Appendices:
OFR_616_App1.pdf 187 KB 06/23/2021 02:06:38 PM
OFR_616_App2.pdf 102 KB 06/23/2021 02:06:39 PM
OFR_616_App3.pdf 157 KB 06/23/2021 02:06:40 PM
OFR_616_App4.xls 931 KB 06/23/2021 02:06:36 PM

Most open-file reports are PDF files and require the free Adobe Acrobat Reader software to view. These reports may also contain GIS data or other file types, and some are collections of files that are intended to run from a CD-ROM or local hard drive.