The U.S. Geological Survey and Desert Research Institute, in cooperation with the Natural Resources Conservation Service, Texas State Soil and Water Conservation Board, Victoria County Groundwater Conservation District, Victoria Soil and Water Conservation District, and the San Antonio River Authority, evaluated the hydrologic effects of Vachellia farnesiana var. farnesiana (huisache) removal on rangeland evapotranspiration in Victoria County, Texas. Measurements of evapotranspiration (ET), rainfall, and related properties were made at two sites during March 2015 through August 2018. One site was predominately grassland. The other site was dominated by dense huisache vegetation that was removed about halfway through the study period. To obtain the meteorological and surface energy flux data needed for the calculation of ET, the two sites were instrumented with LI-COR Biosciences eddy-covariance systems (LI-COR Biosciences, 2019). The resulting ET data were examined for differences between the locations and differences between the pre-removal (2015–16) and post-removal (2017–18) periods to assess the effects of huisache removal on ET. ET measurements were made using the eddy-covariance method and were supplemented by remote-sensing estimates of ET derived from thermal and optical satellite images. The data presented in this data release include various types of meteorological data (for example air temperature, relative humidity, wind speed and direction, and precipitation) and various energy flux data pertaining to ET (for example latent and sensible heat flux). Turbulent fluxes were compared to measured radiative fluxes to assess the energy budget. The sensible-heat flux was computed by taking variations in temperature into consideration. The relation between a given ET rate and the associated latent-heat flux was calculated. Details of the various energy flux calculation are described in the LI-COR Biosciences, 2016. The methods are further described along with the results of the study in the companion report (U.S. Geological Survey Scientific Investigations report 2020-XXX).

This data set contains polygons representing evapotranspiration (ET) units for the upper Humboldt River Basin, northeastern Nevada.

This data set contains polygons representing evapotranspiration (ET) units for the upper Humboldt River Basin, northeastern Nevada.

This Excel workbook contains evapotranspiration (ET) data measured at two field sites near Bridgeport, California, from June 2012 through September 2013. One site consisted of irrigated dense pasture grass and was labeled as the Bridgeport high-density vegetation site (BPHV). The second site consisted of drier pasture grasses with patches of bare soil and was labeled as the Bridgeport low-density vegetation site (BPLV). The data measured include net radiation, latent heat flux, sensible heat flux, soil heat flux, soil water content, air temperature,water vapor density, wind speed, wind direction, and precipitation. The data are aggregated to a 30-minute interval and presented in four worksheets: two for each site, one containing tabular data and one containing data plots. There is an additional worksheet that gives a brief description of the field sites and data collection methods.

This Excel workbook contains evapotranspiration (ET) data measured at two field sites near Bridgeport, California, from June 2012 through September 2013. One site consisted of irrigated dense pasture grass and was labeled as the Bridgeport high-density vegetation site (BPHV). The second site consisted of drier pasture grasses with patches of bare soil and was labeled as the Bridgeport low-density vegetation site (BPLV). The data measured include net radiation, latent heat flux, sensible heat flux, soil heat flux, soil water content, air temperature,water vapor density, wind speed, wind direction, and precipitation. The data are aggregated to a 30-minute interval and presented in four worksheets: two for each site, one containing tabular data and one containing data plots. There is an additional worksheet that gives a brief description of the field sites and data collection methods.

This USGS data release represents the evapotranspiration units and potential areas of groundwater discharge geospatial data from the following publication: Plume, R.W., and Smith, J.L., 2013, Properties of basin-fill deposits, a 1971–2000 water budget, and surface-water-groundwater interactions in the upper Humboldt River basin, northeastern Nevada: U.S. Geological Survey Scientific Investigations Report 2013-5077, 38 p., http://pubs.usgs.gov/sir/2013/5077/. The data set consists of 2 separate items: 1. evapotranspiration units 2. potential areas of groundwater discharge

This USGS data release represents the evapotranspiration units and potential areas of groundwater discharge geospatial data from the following publication: Plume, R.W., and Smith, J.L., 2013, Properties of basin-fill deposits, a 1971–2000 water budget, and surface-water-groundwater interactions in the upper Humboldt River basin, northeastern Nevada: U.S. Geological Survey Scientific Investigations Report 2013-5077, 38 p., http://pubs.usgs.gov/sir/2013/5077/. The data set consists of 2 separate items: 1. evapotranspiration units 2. potential areas of groundwater discharge

The supplemental data presented here contains three raster datasets representing the evapotranspiration (ET) units for northern, southern, and western regions of Harney Basin (raster datasets in .tif format) and one vector dataset of ET-unit observations used to delineate ET units (vector dataset in .shp format). Eleven ET units were identified from ET-unit observations of land cover and include bare soil or playa (1), marsh (2), dry meadow (3), wet meadow (4), open water (5), riparian (6), mixed shrubland (7), phreatophyte shrubland (8), xerophyte shrubland (9), sagebrush shrubland (10), and xerophyte grassland (11). Irrigated areas are excluded from ET units. Unpublished land-cover datasets collected by the U.S. Bureau of Land Management (BLM) and U.S. Fish and Wildlife Service (USFWS) were used, in part, to generate ET-unit observations and are provided (vector datasets in .shp and .csv format) in the sub-child item, Harney Basin Land-Cover Observations.

The supplemental data presented here contains three raster datasets representing the evapotranspiration (ET) units for northern, southern, and western regions of Harney Basin (raster datasets in .tif format) and one vector dataset of ET-unit observations used to delineate ET units (vector dataset in .shp format). Eleven ET units were identified from ET-unit observations of land cover and include bare soil or playa (1), marsh (2), dry meadow (3), wet meadow (4), open water (5), riparian (6), mixed shrubland (7), phreatophyte shrubland (8), xerophyte shrubland (9), sagebrush shrubland (10), and xerophyte grassland (11). Irrigated areas are excluded from ET units. Unpublished land-cover datasets collected by the U.S. Bureau of Land Management (BLM) and U.S. Fish and Wildlife Service (USFWS) were used, in part, to generate ET-unit observations and are provided (vector datasets in .shp and .csv format) in the sub-child item, Harney Basin Land-Cover Observations.

This data release contains geospatial data for the lower Walker River basin from the 2009 publication: Allander, K.A., Smith, J.L., and Johnson, M.J., 2009, Evapotranspiration from the lower Walker River basin, west-central Nevada, water years 2005-07: U.S. Geological Survey Scientific Investigations Report 2009-5079, https://doi.org/10.3133/sir20095079.