Water-surface and groundwater-level elevations on and near Offutt Air Force Base, Nebraska, summer 2020 and spring 2021

This data set contains two sets of measured water-level data collected on and near Offutt Air Force Base near Bellevue, Nebraska. Surface-water and groundwater-level data were collected for two synoptic water-level surveys completed in late summer of 2020 and in spring 2021. The elevations of surface-water features were surveyed with a rover receiver using a real-time network (RTN), where the rover receiver receives real-time position corrections from a central server through a mobile wireless-fidelity (Wi-Fi) hotspot linked to the rover receiver. Data collection procedures ensured that positions and elevations achieved a U.S. Geological Survey (USGS) Level-III survey accuracy and surveyed surface-water elevations were within 0.25 ft of published benchmarks included in the survey. Groundwater level data were collected from monitoring wells screened in the Quaternary-age deposits. During the late summer 2020 synoptic water-level survey, the elevation of the measured wells were surveyed using the RTN approach to achieve a Level-III survey accuracy. The additional data and interpretations provided with this data set and the larger data release are intended to inform stormwater managers of the effect of streamflow of the Missouri River and local climatic conditions on drainage and groundwater movement on and near Offutt Air Force Base.