Starting in early January, Permain Basin Underground Water Conservation District (PBUWCD) personnel have been making annual depth-to-water level measurements. The data collected helps the PBUWCD determine the effect of the pumpage on groundwater levels in the aquifers, the Ogallala aquifer being the largest within Howard and Martin counties. Water level measurements are made in a network of approximately 120 wells, most privately owned.
The depth-to-water level measurement is made by lowering a steel tape to a pre-determined depth in the well. The first few feet of the tape lowered into each well is coated with carpenters’ chalk, which turns a darker shade of blue when it comes into contact with water.
The distance from land surface to the static water level is determined by subtracting the amount of tape with the darker blue chalk from the total feet of tape extended into the well. After the measurement is made, a blue vinyl sticker with the observation well number, the depth-to- water level measurement, and the date of the measurement is affixed to the well equipment or other appropriate surface near the well site.
Water district personnel measure the same wells in the observation well network each year, as long as the individual wells provide satisfactory data. The current depth-to-water measurements in individual wells are compared to that of the previous years to determine the annual change in water levels of the aquifers within the district.
Water Level Monitoring
Water Level Monitoring Charts (click on year to view chart)