USGS Science⌕ Search

Geology topics

Hieu T. Nguyen

Publications and source records attributed to Hieu T. Nguyen.

10 recordsLinked to original sources
USGS2004

Water Resources Data, Indiana, Water Year 2003

Water resources data for the 2003 water year for Indiana consists of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 148 stream-gaging stations, stage for 16 stream stations, stage and contents for 1 reservoir, water quality for 5 streams, water temperature at 17 sites, sediment analysis for 2 streams, water levels for 8 lakes and 88 observation wells. Also included are records of miscellaneous discharge measurements, miscellaneous levels and miscellaneous water-quality, not part of the systematic data-collection program. Data contained in this report represent that part of the National Water Information System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Water Data Report↗
USGS2002

Water resources data, Indiana, water year 2001

Water resources data for the 2001 water year for Indiana consists of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 163 stream-gaging stations, stage for 8 stream stations, stage and contents for 1 reservoir, water quality for 1 stream, water temperature at 11 sites, sediment analysis for 1 stream, water levels for 78 lakes and 88 observation wells. Also included are records of miscellaneous discharge measurements, miscellaneous levels and miscellaneous water-quality, not part of the systematic data-collection program. Data contained in this report represent that part of the National Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Indiana↗
USGS2002

Feasibility of Acoustic Doppler Velocity Meters for the Production of Discharge Records from U.S. Geological Survey Streamflow-Gaging Stations

It is feasible to use acoustic Doppler velocity meters (ADVM's) installed at U.S. Geological Survey (USGS) streamflow-gaging stations to compute records of river discharge. ADVM's are small acoustic current meters that use the Doppler principle to measure water velocities in a two-dimensional plane. Records of river discharge can be computed from stage and ADVM velocity data using the 'index velocity' method. The ADVM-measured velocities are used as an estimator or 'index' of the mean velocity in the channel. In evaluations of ADVM's for the computation of records of river discharge, the USGS installed ADVM's at three streamflow-gaging stations in Indiana: Kankakee River at Davis, Fall Creek at Millersville, and Iroquois River near Foresman. The ADVM evaluation study period was from June 1999 to February 2001. Discharge records were computed, using ADVM data from each station. Discharge records also were computed using conventional stage-discharge methods of the USGS. The records produced from ADVM and conventional methods were compared with discharge record hydrographs and statistics. Overall, the records compared closely from the Kankakee River and Fall Creek stations. For the Iroquois River station, variable backwater was present and affected the comparison; because the ADVM record compensates for backwater, the ADVM record may be superior to the conventional record. For the three stations, the ADVM records were judged to be of a quality acceptable to USGS standards for publications and near realtime ADVM-computed discharges are served on USGS real-time data World Wide Web pages.

Indiana↗
USGS2001

Water resources data, Indiana, water year 2000

Water resource data for the 2000 water year for Indiana consists of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 166 stream-gaging stations, stage for 7 stream stations, stage and contents for 1 reservoir, water quality for 2 streams, sediment analysis for 1 stream, water levels for 79 lakes and 89 observation wells. Also included are records of miscellaneous discharge measurements, miscellaneous levels and miscellaneous water-quality, not part of the systematic data-collection program. Data contained in this report represent that part of the the National Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Indiana↗
USGS2000

Water resources data, Indiana, water year 1999

Water resources data for the 1999 water year for Indiana consists of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 165 stream-gaging stations, stage for 7 stream stations, stage and contents for 1 reservoir, water quality for 4 streams, sediment analysis for 1 stream, water levels for 80 lakes and 94 observation wells. Also included are records of miscellaneous discharge measurements, not part of the systematic data-collection program. Data contained in this report represent that part of the National Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Indiana↗
USGS1999

Water resources data, Indiana, water year 1998

Water resources data for the 1998 water year for Indiana consists o f records o f discharge, stage, and water quality o f streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records o f discharge for 166 stream-gaging stations, stage for 8 stream stations, stage and contents for 1 reservoir, water quality for 3 streams, sediment analysis for 1 stream, water levels for 80 lakes and 94 observation wells, water quality for 2 wells. Also included are records o f miscellaneous discharge measurements and miscellaneous water-quality sites, not part o f the systematic data-collection program, and are shown as miscellaneous samplings. Data contained in this report represent that part o f the National Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Indiana↗
USGS1998

Water resources data, Indiana, water year 1997

Water resources data for the 1997 water year for Indiana consists of records of discharge, stage, and water quality of streams and wells; reservoir stage and contents; and water levels in lakes and wells. This report contains records of discharge for 166 stream-gaging stations, stage for 6 stream stations, stage and contents for 1 reservoir, water quality for 2 streams, and water levels for 80 lakes and 95 observation wells. These data represent that part of the National Water Data System operated by the U.S. Geological Survey in Indiana in cooperation with State and Federal agencies.

Indiana↗