Cooperative Groundwater Management Group Groundwater Elevation - Groundwater Depth

Well T26S/R39E-26A (USBR #4) This hydrograph shows data from a monitoring well located adjacent to major extraction wells. Note the peaks of the graph reflecting low-pumping periods of the fall-winter season (decline of 0.4 ft/yr since 1991) while the valleys reflect the high-pumping periods during spring-summer seasons (declines of 0.4 ft/yr.) This is a classic example of well hydrographs in this area.