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McGlone Price

Publications and source records attributed to McGlone Price.

16 recordsLinked to original sources
USGS2007

Comparison of methods for estimating flood magnitudes on small streams in Georgia

The U.S. Geological Survey has collected flood data for small, natural streams at many sites throughout Georgia during the past 20 years. Flood-frequency relations were developed for these data using four methods: (1) observed (log-Pearson Type III analysis) data, (2) rainfall-runoff model, (3) regional regression equations, and (4) map-model combination. The results of the latter three methods were compared to the analyses of the observed data in order to quantify the differences in the methods and determine if the differences are statistically significant.

Water Resources Bulletin↗
USGS1987

Flood-flow characteristics of Nancy Creek at Georgia Highway 400 extension near Atlanta, Georgia

The Highway Division, Georgia Department of Transportation, plans the extension of Georgia Highway 400 from Interstate 285 southward to Interstate 85. As part of this extension, the Highway Division plans construction of a bridge crossing Nancy Creek near Atlanta, Georgia. The U.S. Geological Survey, in cooperation with the Highway Division, determined the flood flow characteristics of Nancy Creek near the bridge crossing. The flood frequency, elevation discharge relation, flood profiles, floodway, and flood flow effects were determined. The maximum backwater effect for the proposed bridge and relocated channel was 0.2 ft for the 100-yr flood. The relocated channel will drastically shorten flow length near the proposed State Highway 400 extension and reduce the 100-yr flood elevation between one and two ft from existing conditions between the proposed site and Windsor Parkway. (Author's abstract)

Georgia↗
USGS1986

Verification of regression equations for estimating flood magnitudes for selected frequencies on small natural streams in Georgia

In 1976 the U.S. Geological Survey, in cooperation with the Georgia Department of Transportation, began a program to monitor small natural streams in Georgia to verify the accuracy of the flood frequency estimating equations for the five flood frequency regions that were published in a previous study. Data collection consisted of obtaining an additional 10 yr of annual peak flow records at 24 gaging stations and establishing and collecting annual peak flow records at 15 additional gaging sites in areas of the State where data were unavailable. Data also were collected for an additional 10 yr at four gaging stations that were converted to continuous record gaging stations in 1976. The flood frequency equations were verified by comparing the observed and regression equation estimated discharges for the 2-, 25-, and 100-yr floods: (1) for the 28 gaging stations continued an additional 10 yr; (2) for the 15 gaging stations that have about 10 yr of record where data were unavailable; and (3) for all gaging stations on drainage areas of < 50 sq mi for which data were available in all five flood frequency regions. The rainfall-runoff model simulated discharges from the previous study also were verified by comparisons of the observed and the rainfall-runoff model simulated discharges for the 2-, 25-, and 100-yr floods for gaging stations calibrated in the previous study. These comparisons, based on student 's t-test statistics at the 0.05 level of significance, indicated that all the flood frequency equations computed in the previous study are valid and unbiased except for Regions 2 and 3, where the equations appear to be slightly biased. The comparison of the discharges simulated by the rainfall-runoff model with the observed discharges for the gaging stations that have 20 yr of record were unbiased, but simulated discharges for stations having 10 yr of record were biased, probably because of ' loss of variance ' in the averaging procedures of the rainfall-runoff model and the short length of record. The flood-frequency estimating equations computed in the previous study have been verified and are considered to be valid for natural streams in Georgia that have drainage areas of 0.1 to 20 sq mi. (Author 's abstract)

Georgia↗
USGS1981

Cedar Creek at Cedartown, Georgia, floodflow characteristics from West Girard Avenue to the Georgia Avenue Relocation

In cooperation with the Highway Division, Georgia Department of Transportation, the U.S. Geological Survey determined the backwater effects of existing bridges and dikes on Cedar Creek at Cedartown, Georgia, for the reach from West Girard Avenue to the Georgia Avenue relocation. The maximum backwater effect for the bridges was 1.7 feet in the upstream approach at the Seaboard Coastline Railroad bridge as a combined result of the Georgia Highway 278 bridge and the Seaboard Coastline Railroad bridge. The maximum effect from the existing dikes was 0.7 foot at the approach section of Georgia Highway 278.

Georgia↗
USGS1979

Floods in Georgia, magnitude and frequency: Techniques for estimating the magnitude and frequency of floods in Georgia with compilation of flood data through 1974

Regional relations are defined for estimating the magnitude and frequency of floods having recurrence intervals of 2, 5, 10, 25, 50, and 100 years on streams with natural flow in Georgia. Multiple-regression analyses were used to define the relationship between the flood-discharge frequency of annual peak discharges for streams draining 0.1 to 1,000 square miles and 10 climatological and physical basin characteristics. The analyses indicate that the drainage area of the basin is the most significant characteristic. Five regions having distinct flood-discharge frequency characteristics are delineated. Individual relations of flood magnitude and frequency to drainage area are given for parts of the main stems of the major rivers without significant regulation draining more than 1,000 square miles. (Kosco-USGS)

Georgia↗
USGS1977

Techniques for Estimating Flood-Depth Frequency Relations on Natural Streams in Georgia

Regional relations are defined for estimating the depth of floods having recurrence intervals of 10, 50, and 100 years on streams with natural flow in Georgia. Multiple-regression analysis of station data is used to define the relations between flood depths and frequency for streams draining from 1 to 1,000 square miles, and for 10 climatological and physical basin characteristics. The analysis indicates that the drainage area of the basin is the most significant variable. Five regions having distinct flood-depth frequency characteristics are delineated. The developed relations, expressed as equations and graphs, are considered usable for any site in Georgia where the drainage area is between 1 and 1,000 square miles, and the flow is natural; exceptions include streams that are urbanized, regulated, tide affected, channelized, or where manmade structures significantly affect peak stages.

Georgia↗
USGS1976

Floodflow characteristics, North Fork Peachtree Creek at Interstate 85, DeKalb County, Georgia

This report has been prepared as part of a program of water-resources investigations, under the provisions of a cooperative agreement between the Highway Division, Department of Transportation, State of Georgia, and the U.S. Geological Survey. The Highway Division plans modification of the bridge crossing of North Fork Peachtree Creek at Interstate 85 and the addition of frontage roads and bridges upstream and downstream of Interstate 85, DeKalb County, Ga. The purpose of the study was to determine the flood characteristics for North Fork Peachtree Creek in the vicinity of Interstate 85 in relation to (1) major changes that have occurred since 1956 and (2) the effects of the proposed highway modifications and additions in the vicinity of the Interstate 85 crossing. Analyses of flow characteristics for the 50- and 100year floods were made for the following conditions: Natural conditions before construction of Interstate 85 (1952). Conditions after construction of Interstate 85 but prior to construction of Century Center, an office complex downstream from Interstate 85 (1968). Present conditions (1975) after construction of Interstate 85 and Century Center. Conditions for proposed bridge modification and highway additions, assuming that both frontage road bridges will be constructed higher than the 100-year flood. In addition, the study included backwater computations, area of opening under high water, and average velocity at the proposed Interstate 85 bridge opening for both the 50- and 100-year floods. All elevations referred to in this report are to highway datum, which is mean sea level.

Georgia↗
USGS1976

Flood-frequency analysis for small natural streams in Georgia

Flood information from 104 project basins (0.1 to 20 square miles) and data available from 170 larger basins (20 to 1,500 square miles) are analyzed to provide planners and designers with relations for estimating the magnitude and frequency of flood-peak discharges on small natural streams in Georgia. In 1963 the U.S. Geological Survey, in cooperation with the Georgia Department of Transportation and the Federal Highway Administration,U.S. Department of Transportation, began this program to collect and analyze flood-peak data from small drainage basins. More than 90 percent of the project activity was directed toward the acquisition and processing of data for more than two thousand rainfall-runoff periods occurring during 1964-74 at the 104 project stations. Storm rainfall data were computed at 5-minute intervals from records of six long-term (about 75 years) National Weather Service stations. The U.S. Geological Survey mathematical rainfall-runoff model is used to synthesize long-term flood records for about 80 percent of the project stations. Station flood-frequency data are developed, using the log-Pearson Type III distribution with regionalized skew coefficients. Multiple regression analysis is used to define relations between flood-frequency station data for small and large streams and 10 physical and climatological basin characteristics. The analysis indicates the drainage-basin size is the most significant variable. Five regions having distinct flood-peak characteristics are delineated. One of these regions, known as the Sand Hills, has not been delineated previously as an area of "low" flood runoff. The developed relations, expressed as equations and nomographs, are considered usable for virtually any site in Georgia where ne drainage area is between 0.1 and 20 square miles, and the flow is natural.

Georgia↗
USGS1975

Cedar Creek at Cedartown, Georgia-- floodflow characteristics at bridge site of Georgia Avenue relocation (supplement to open-file report 75-46)

The May 1974 U.S. Geological Survey open-file report 75-46, "Cedar Creek at Cedartown, Georgia, Floodflow Characteristics at Georgia Avenue, Relocation and Canal Street Extension," prepared at the request of the Georgia Department of Transportation, described the hydraulic characteristics of the Georgia Avenue relocation as constructed in April 1974, and evaluated the effects of three proposed changes in roadway grades at this crossing.

Georgia↗