This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during February–March of 2018. The water-table map was developed using groundwater-level measurements from shallow wells (generally less than 100 ft deep in the lowlands) and the altitudes of springs and gaining stream reaches and constrained by the altitude of the land surface. The deeper potentiometric-surface map was developed using measurements from wells generally more than 100 ft deep in the lowlands. The hydraulic-head distributions depicted are generalizations. The large study area, availability of water-level measurements, the distribution of wells across Harney Basin, and resource limitations precluded mapping all the complexities of the head distribution. Contours are most detailed and have 10-ft intervals (with the exception of the 4,095-ft contour) in the Harney Basin lowlands where data are more abundant, and the land surface is relatively flat. Groundwater heads of 4,200 ft or more were mapped using 500-ft contour intervals and generally coincide with upland areas where wells are sparse and groundwater head is strongly controlled by topography.

This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during February–March of 2018. The water-table map was developed using groundwater-level measurements from shallow wells (generally less than 100 ft deep in the lowlands) and the altitudes of springs and gaining stream reaches and constrained by the altitude of the land surface. The deeper potentiometric-surface map was developed using measurements from wells generally more than 100 ft deep in the lowlands. The hydraulic-head distributions depicted are generalizations. The large study area, availability of water-level measurements, the distribution of wells across Harney Basin, and resource limitations precluded mapping all the complexities of the head distribution. Contours are most detailed and have 10-ft intervals (with the exception of the 4,095-ft contour) in the Harney Basin lowlands where data are more abundant, and the land surface is relatively flat. Groundwater heads of 4,200 ft or more were mapped using 500-ft contour intervals and generally coincide with upland areas where wells are sparse and groundwater head is strongly controlled by topography.

This dataset contains manually developed 5-, 10-, and 500-ft contours for the Harney Basin, Oregon aquifer system shallow and deep potentiometric-surface maps. The potentiometric-surfaces show altitude at the water-table surface (shallow) and at which the water level would have risen in tightly-cased wells deeper than 100 ft (deep) and generally represents synoptic conditions during February–March of 2018. The water-table map was developed using groundwater-level measurements from shallow wells (generally less than 100 ft deep in the lowlands) and the altitudes of springs and gaining stream reaches and constrained by the altitude of the land surface. The deeper potentiometric-surface map was developed using measurements from wells generally more than 100 ft deep in the lowlands. The hydraulic-head distributions depicted are generalizations. The large study area, availability of water-level measurements, the distribution of wells across Harney Basin, and resource limitations precluded mapping all the complexities of the head distribution. Contours are most detailed and have 10-ft intervals (with the exception of the 4,095-ft contour) in the Harney Basin lowlands where data are more abundant, and the land surface is relatively flat. Groundwater heads of 4,200 ft or more were mapped using 500-ft contour intervals and generally coincide with upland areas where wells are sparse and groundwater head is strongly controlled by topography.

This dataset consists of contours showing the generalized altitude of the potentiometric surface for the shallow groundwater system in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Potentiometric-surface altitude was contoured from values in the raster dataset potalt. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

This dataset consists of contours showing the generalized altitude of the potentiometric surface for the shallow groundwater system in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Potentiometric-surface altitude was contoured from values in the raster dataset potalt. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

This dataset consists of altitudes values (in feet) representing the generalized potentiometric surface of the shallow groundwater system in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Potentiometric-surface altitude values were computed as the difference between land surface and depth to water represented by dataset dtw. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

This dataset consists of altitudes values (in feet) representing the generalized potentiometric surface of the shallow groundwater system in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Potentiometric-surface altitude values were computed as the difference between land surface and depth to water represented by dataset dtw. The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

This point dataset contains water-level information concerning depth to water, potentiometric-surface altitude, and saturated thickness for the shallow groundwater system at selected well and borehole locations in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Depth-to-water data were compiled from measurements reported by the Colorado Division of Water Resources, U.S. Geological Survey, and Bureau of Reclamation. Potentiometric-surface altitude values were computed from the potentiometric-surface altitude raster dataset (potalt). Saturated-thickness values were computed from the saturated-thickness raster dataset (satthk). The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

This point dataset contains water-level information concerning depth to water, potentiometric-surface altitude, and saturated thickness for the shallow groundwater system at selected well and borehole locations in the Lower Gunnison River Basin in Delta, Montrose, Ouray, and Gunnison Counties, Colorado. Depth-to-water data were compiled from measurements reported by the Colorado Division of Water Resources, U.S. Geological Survey, and Bureau of Reclamation. Potentiometric-surface altitude values were computed from the potentiometric-surface altitude raster dataset (potalt). Saturated-thickness values were computed from the saturated-thickness raster dataset (satthk). The U.S. Geological Survey prepared this dataset in cooperation with the Colorado Water Conservation Board.

The semi-arid Walla Walla River Basin (WWRB) spans 1,777 square miles in Washington and Oregon and supports a diverse agricultural region as well as cities and rural communities that are partially reliant on groundwater. Historically, surface-water and groundwater data have been collected in the WWRB by federal, state, local, and tribal governments, irrigation districts, universities, and non-profit entities. This data release presents the surface-water and groundwater data collection by the U.S. Geological Survey (USGS) from February 2018 to April 2022. Data were collected and compiled for 237 sites — 191 wells and 46 surface-water discharge sites.