Skip to main content
Advanced Search

Filters: Types: Raster (X) > partyWithName: U.S. Geological Survey (X)

Folders: ROOT > ScienceBase Catalog > USGS Nevada Water Science Center ( Show direct descendants )

14 results (88ms)   

View Results as: JSON ATOM CSV
thumbnail
This dataset, created in support of USGS Scientific Investigations Report 2020-5075, Estimates of Groundwater Discharge by Evapotranspiration, Stump Spring and Hiko Springs, Clark County, Nevada, 2016-18, represents a Normalized Difference Vegetation Index calculated for vegetated areas in the Hiko Springs groundwater discharge area. Vegetated areas within the GDA are composed of phreatophytic shrubs interspersed with xeric vegetation and bare soil. The GDA was delineated by visual interpretation of 1-meter National Agriculture Imagery Program (NAIP) aerial imagery acquired in May of 2015. Areas of channel scour within the GDA resulting from a flood event in September 2015 were delineated from a 2016 1.84-meter...
thumbnail
The mean MSAVI image is based on two Landsat 5 Thematic Mapper (TM) scenes representing midsummer conditions in 2007 and 2008. MSAVI was calculated for each image which were then combined by calculating the mean for each pixel in the scenes. The resultant MSAVI image was used to estimate vegetation assemblages (ET units) within a mapped groundwater discharge area.
thumbnail
This raster dataset represents groundwater-level change from 1970 to 2020 in Smith Valley and Mason Valley, Nevada, calculated using approach 2. For this approach, depth-to-water measurements from 53 monitoring wells, represented as point values, were differenced between 1970 and 2020. Point values of change were interpolated into a raster to calculate valley-wide groundwater-level change. Depth-to-water was measured at the same 53 wells in 1995, 2006, and 2020. Depth-to-water measurements for 1970 were calculated by interpolating groundwater-level contours and extracting point values at the monitoring well locations. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level...
thumbnail
This raster dataset represents groundwater-level change from 2007 to 2020 in Smith Valley and Mason Valley, Nevada, calculated using approach 2. For this approach, depth-to-water measurements from 53 monitoring wells, represented as point values, were differenced between 2006 and 2020. Point values of change were interpolated into a raster to calculate valley-wide groundwater-level change. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
thumbnail
This dataset, created in support of USGS Scientific Investigations Report 2020-5075, Estimates of Groundwater Discharge by Evapotranspiration, Stump Spring and Hiko Springs, Clark County, Nevada, 2016-18, represents a Normalized Difference Vegetation Index calculated for vegetated areas in the Stump Spring groundwater discharge area (GDA) and Area of Critical Environmental Concern (ACEC). Vegetated areas within the GDA are composed of phreatophytic shrubs interspersed with xeric vegetation and bare soil. The GDA was delineated by visual interpretation of 1-meter National Agriculture Imagery Program (NAIP) aerial imagery acquired in May of 2015. The NDVI was calculated from a June 2017 WorldView 2 image resampled...
thumbnail
This raster dataset represents groundwater-level change from 2007 to 2020 in Smith Valley and Mason Valley, Nevada, calculated using approach 1. For this approach, groundwater-level contours from 2006 and 2020 were interpolated into rasters and differenced to calculate groundwater-level change. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
thumbnail
This raster dataset represents groundwater-level change from 1970 to 2020 in Smith Valley and Mason Valley, Nevada, calculated using approach 1. For this approach, groundwater-level contours from 1970 and 2020 were interpolated into rasters and differenced to calculate groundwater-level change. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
thumbnail
This raster dataset represents groundwater-level change from 1996 to 2006 in Smith Valley and Mason Valley, Nevada, calculated using approach 2. For this approach, depth-to-water measurements from 53 monitoring wells, represented as point values, were differenced between 1996 and 2006. Point values of change were interpolated into a raster to calculate valley-wide groundwater-level change. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
thumbnail
This raster dataset represents groundwater-level change from 1970 to 1995 in Smith Valley and Mason Valley, Nevada, calculated using approach 2. For this approach, depth-to-water measurements from 53 monitoring wells, represented as point values, were differenced between 1970 and 1995. Point values of change were interpolated into a raster to calculate valley-wide groundwater-level change. Depth-to-water was measured at the same 53 monitoring wells in 1995, 2006, and 2020. Depth-to-water measurements from 1970 were calculated by interpolating groundwater-level contours and extracting point values at the monitoring well locations. Groundwater-level change was estimated using two methods (approach 1 and 2) to address...
thumbnail
This dataset, created in support of USGS Scientific Investigations Report 2020-5075, Estimates of Groundwater Discharge by Evapotranspiration, Stump Spring and Hiko Springs, Clark County, Nevada, 2016-18, represents a two class land cover classification consisting of moderate to dense vegetation and bare to sparsely vegetated areas within the Groundwater Discharge Area and Area of Critical Environmental Concern boundaries for Stump Spring, Nevada. The classification is based on a 2015 1-meter National Agricultural Imagery Program (NAIP) image and a maximum likelihood classification algorithm provided in ENVI software (https://www.harrisgeospatial.com/docs/Classification.html#ClassSupervised).
thumbnail
This raster dataset represents normalized difference vegetation index (NDVI) values calculated from National Agricultural Imagery Program (NAIP) spectral data for the vegetated evapotranspiration (ET) unit in the groundwater discharge areas for the Amargosa Wild and Scenic River and contributing areas. Estimated groundwater discharge by ET also is presented.
thumbnail
This data set represents evapotranspiration (ET) units based on a 2017-2018 summer mean modified soil adjusted vegetation index (MSAVI). The MSAVI information was used to partition Tule Valley and part of Sevier Valley, UT into six discharging ET units (playa; open water; very sparse desert shrub; sparse-to-dense desert shrub; grassland; and dense meadow and marshland), and scale estimates of groundwater evapotranspiration (ETg) to the basin level. ET units represent generalized groupings of vegetation and soil conditions. The units are constrained by a groundwater discharge area (GDA) which represents the area where discharge from evaporation by open water or bare soil and transpiration from phreatophytic plants...
thumbnail
This raster dataset represents groundwater-level change from 1996 to 2006 in Smith Valley and Mason Valley, Nevada, calculated using approach 1. For this approach, groundwater-level contours from 1995 and 2006 were interpolated into rasters and differenced to calculate groundwater-level change. Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
thumbnail
This raster dataset represents groundwater-level change from 1970 to 1995 in Smith Valley and Mason Valley, Nevada, calculated using approach 1. For this approach, groundwater-level contours from 1970 and 1995 were interpolated into rasters and differenced to calculate groundwater-level change.Groundwater-level change was estimated using two methods (approach 1 and 2) to address groundwater-level measurement uncertainty and constrain groundwater-level change estimates.
    map background search result map search result map Scaled Modified Soil Adjusted Vegetation Index for Tule Valley and part of Sevier Valley, Utah Evapotranspiration Units for Tule Valley and part of Sevier Valley, Utah Normalized Difference Vegetation Index for Vegetated Areas of the Groundwater Discharge Area, Hiko Springs, NV Maximum Likelihood Vegetation Classification for the Combined Groundwater Discharge Area and Area of Critical Environmental Concern, Stump Spring, NV Normalized Difference Vegetation Index Corresponding to Vegetated Areas in the Combined Groundwater Discharge Area and Area of Critical Environmental Concern, Stump Spring, NV Vegetation index corresponding to vegetated areas in the groundwater discharge areas for the Amargosa Wild and Scenic River and contributing areas, Inyo and San Bernardino Counties, California 05) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-1995, approach 1 06) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1996-2006, approach 1 07) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 2007-2020, approach 1 08) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-2020, approach 1 09) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-1995, approach 2 11) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 2007-2020, approach 2 12) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-2020, approach 2 10) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1996-2006, approach 2 Normalized Difference Vegetation Index Corresponding to Vegetated Areas in the Combined Groundwater Discharge Area and Area of Critical Environmental Concern, Stump Spring, NV Maximum Likelihood Vegetation Classification for the Combined Groundwater Discharge Area and Area of Critical Environmental Concern, Stump Spring, NV Normalized Difference Vegetation Index for Vegetated Areas of the Groundwater Discharge Area, Hiko Springs, NV Vegetation index corresponding to vegetated areas in the groundwater discharge areas for the Amargosa Wild and Scenic River and contributing areas, Inyo and San Bernardino Counties, California 05) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-1995, approach 1 06) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1996-2006, approach 1 07) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 2007-2020, approach 1 08) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-2020, approach 1 09) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-1995, approach 2 11) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 2007-2020, approach 2 12) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1970-2020, approach 2 10) Groundwater-level change for Smith Valley and Mason Valley, Nevada, 1996-2006, approach 2 Scaled Modified Soil Adjusted Vegetation Index for Tule Valley and part of Sevier Valley, Utah Evapotranspiration Units for Tule Valley and part of Sevier Valley, Utah