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Data are raw data files output by the Burris gravimeter PDA. Files include the Earth tide correction used in the UltraGrav software.
Data are absolute-gravity observations collected using an A-10 absolute gravimeter.
The dataset consists of final gravity values and gravity differences. Gravity values were obtained from network adjustment of relative gravity and absolute gravity measurements.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Colorado River,
Hydrology
Time-lapse DC resisitivity data were collected to monitor water table position during the 2015 Lower Coloradro River Pulse Flow. Resistivity data are sensitive to water-content change in the subsurface. DC resistivity data were collected at three transects. In the U.S., one transect was located parallel to the channel in the southern limitrophe reach nearby a streamgaging station. In Mexico, two transects were measured, one parallel and one perpendicular to the channel.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Colorado River Delta,
Geophysics,
Hydrology
"Tapedown" water-level measurements made by Ciencias de la Tierra y del Medio Ambiente, Instituto de Ingenieria, UABC.
For the Minute 319 pulse flow, electromagnetic induction surveys were carried out jointly by the USGS and UABC-CICESE. Measurements were made at 5 m intervals and transect lengths ranged from 55 m to 200 m.
Categories: Data;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Colorado River Delta,
Geophysics,
Hydrology
Data are tide- and drift-corrected relative-gravity differences observed using a ZLS, Inc. Burris relative gravimeter.
Geophysical methods were used to monitor infiltration during a water release, referred to as a “pulse flow”, in the Colorado River delta in March and April 2014. The pulse flow was enabled by Minute 319 of the 1944 United States-Mexico Treaty concerning water of the Colorado River. Field work was carried out by the U.S. Geological Survey and the Centro de Investigación Científica y de Educación Superior de Ensenada as part of a binational effort to monitor the hydrologic effects of the pulse flow along the limitrophe (border) reach of the Colorado River, and into Mexico. Repeat microgravity measurements were made at 25 locations in the southern limitrophe reach to quantify aquifer storage change during the pulse...
In the southwestern U.S., many riparian ecosystems have been altered by dams, water diversions, and other anthropogenic activities. This is particularly true of the Colorado River, where numerous dams and agricultural diversions have affected this water course, especially south of the U.S.–Mexico border. In the spring of 2014, 130 million cubic meters of water was released to the lower Colorado River Delta in Mexico. To understand the impact of this pulse flow release on vegetation in the delta's riparian corridor, we analyzed a modified form of Landsat 8 Operational Land Imager (OLI) Normalized Difference Vegetation Index (NDVI*) data. We assessed greenup during the growing period and estimated actual evapotranspiration...
Collected data for all piezometers and all agencies. Each child item contains metadata about instrument type, date range, etc., the available data at that site, and a plot of the data. To download all continuous (transducer) groundwater data, look for the "Min319_ContinuousGWdata.zip" file attached to this item. To download all discrete (tapedown) groundwater data, look for the "Min319_DiscreteGWdata.csv" and "Min319_DiscreteGWdata_dry.csv" files attached to this item. 2015-2016 data in the attached file "UABC_GroundwaterData_2015-2016.zip" were collected by Universidad Autónoma de Baja California (UABC). These data have not been reviewed or approved by the U.S. Geological Survey. They are being provided to meet...
Categories: Data
Organization: Ciencias de la Tierra y del Medio Ambiente Instituto de Ingenieria UABC Data: Water Level - Transducer Water Level - Tapedown Coordinate (approximate; UTM 11N): 3619048 N 711917 E
Organization: Ciencias de la Tierra y del Medio Ambiente Instituto de Ingenieria UABC Data: Water Level - Transducer Water Level - Tapedown Coordinate (approximate; UTM 11N): 3583809 N 691683 E
Alternate IDs: 14 1/8S-10 3/4W Organization: U.S. Bureau of Reclamation Yuma Area Office Data: Water Level - Tapedown Coordinate (approximate; UTM 11N): 3600110 N 706709 E
Alternate IDs: 2 1/2S-6 7/8W Organization: U.S. Bureau of Reclamation Yuma Area Office Data: Water Level - Tapedown Coordinate (approximate; UTM 11N): 3619140 N 712526 E
Alternate IDs: 10 1/2S-4W(D) Organization: U.S. Bureau of Reclamation Yuma Area Office Data: Water Level - Tapedown Coordinate (approximate; UTM 11N): 3606295 N 717494 E
Alternate IDs: 10 3/4S-4W Organization: U.S. Bureau of Reclamation Yuma Area Office Data: Water Level - Tapedown Coordinate (approximate; UTM 11N): 3605853 N 717504 E
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