Geology topics

R. A. Gardner

Publications and source records attributed to R. A. Gardner.

4 recordsLinked to original sources

USGS1987

Streamflow and cross-section data for the Tombigbee River between Aliceville and Gainesville locks and dams

A review of records and historical research of floods for the Tombigbee River near Cochrane, Alabama, show that the flood of 1892 was the highest since 1818. In 1962 the U.S. Army Corps of Engineers estimated a peak discharge of 235,000 cu ft/sec for this flood. This estimated discharge is more than 40% > the next highest flood peak; that of 1973. Limit curves developed for the tailwater of Aliceville Lock and Dam, based on 61 computed discharge and 24 discharge measurements, show the range in stage for a given discharge at this site. Similarly, limit curves developed for Gainesville Lock and Dam pool were developed based on 49 computed discharges and 10 mean daily discharges. Data from hydrographic surveys that were made for more than 100 ranges in 1937 and 1971 are on file with the U.S. Army Corps of Engineers. Presently 49 sedimentation ranges between Aliceville Lock and Dam and Gainesville Lock and Dam are surveyed routinely. Comparison of these and other data may be made to identify changes occurring along this reach of the river as a result of natural and man-made causes. These and other hydrologic data collected along the reach of the Tombigbee River between Aliceville Lock and Dam and Gainesville Lock and Dam are presented in tables. (USGS)

Open-File Report↗

USGS1987

Streamflow and cross-section data for the Tombigbee River between Gainesville and Demopolis locks and dams

A review of records and historical research of floods indicate that the flood of April 15-18, 1979, was the highest recorded this century along the reach of the Tombigbee River that is now bounded upstream by Gainesville Lock and Dam and downstream by Demopolis Lock and Dam. The peak discharge during this flood ranged from 247,000 cu ft/sec at Epes to 343,000 cu ft/sec at Demopolis Lock and Dam. Limit curves developed for the tailwater of Gainesville Dam, based on 105 computed discharges for four flood events since April 1979, show the range in stage for a given discharge at this site. Data from hydrographic surveys that were made for more than 100 sedimentation ranges in 1971 are on file with the U.S. Army Corps of Engineers. Presently 42 sedimentation ranges between Gainesville Lock and Dam and Demopolis Lock and Dam are surveyed routinely. Comparison of these and other data can be made in order to observe what changes have occurred along this reach of the river, as a result of natural and man-made causes. These and other hydrologic data collected along the reach of the Tombigbee River between Gainesville Lock and Dam and Demopolis Lock and Dam are presented in tables. (USGS)

Open-File Report↗

USGS1986

Time-of-travel and reaeration data for seven small streams in Alabama, June 1983 to August 1984

Time-of-travel and reaeration data were collected between June 1983 and August 1984 for seven small streams in Alabama. Rhodamine WT was used as a tracer for all the studies and propane was used in the reaeration studies. Mean velocities through the study reaches ranged from 0.06 to 0.67 ft/sec. Computed reaeration coefficients, corrected to 20 C, ranged from 1.7 to 45.8 days-1. (USGS)

Open-File Report↗

USGS1985

Data collection for a time-of-travel and dispersion study on the Coosa River near Childersburg, Alabama

Approximately 2,300 dye-tracer samples were collected and analyzed during a 5-day time-of-travel study on a 23-mile reach of the Coosa River between Logan Martin and Lay dams near Childersburg, Alabama, October 27 to 31, 1984. Rhodamine WT was used as the tracer-dye. Unsteady flow conditions prevailed in the study reach. The rate of movement of the dye cloud between sampling cross sections ranged from 0.15 to 1.36 feet per second. The average rate of movement of the dye cloud between the injection cross section and the downstream sampling cross section was 0.42 foot per second.

Alabama↗