Science for a Sustainable Future of the Great Plains: Water-Quality Assessment in Central Nebraska
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Geology topics
Publications and source records attributed to Thomas L. Huntzinger.
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Rainfall with concordant runoff events recorded at 45 gages located in drainage basins of less than 30 square miles in Oklahoma are summarized. Selected basin characteristics which relate to storm runoff are described and tabulated for each gage site summarized. A tabulation is included which identifies drainage basins that produce atypical rainfall-runoff distribution as a result of regulation by upstream flood-retention structures.
The storm of August 27-28, 1977, in southwestern Oklahoma, shown on the map in figure 1, resulted in extensive inundation of property and damages estimated at close to $1 million (National Weather Service, 1977). Major flooding occurred on Blue Beaver and West Cache Creeks and their tributaries in Comanche County near the communities of Cache and Faxon, Oklahoma. The area studied extends from the confluence of Blue Beaver and West Cache Creeks near Faxon, north to U.S. Highway 62 at Cache, Peak discharges at selected points along major streams in the area were computed and compared to estimated flood frequencies. Observed highwater marks were used to establish flood profiles and to map flooded areas . Rainfall amounts for the storm and depth-duration- frequency data for the area are included. (National Weather Service, 1977)
Streamflow records are analyzed statistically to determine high-flow characteristics of selected streams in Oklahoma. Tables are included which show the 2-, 5-, 10-, 25-, 50-, and 100-year high-flow frequencies for durations of 1, 3, 7, 30, 90, and 365 days. The log-Pearson Type III frequency distribution was used in the computations. Streamflow records used include data extending from 1903 to 1974.
Analysis of streamflow records in Oklahoma has provided information on the low-flow characteristics of selected streams in Oklahoma. The 2-, 10- and 20-year low-flow frequency for 1-, 7-, 14- and 30-day durations have been determined for 143 continuous record stations, 46 partial record, and 56 miscellaneous sites in Oklahoma. Low-flows of small uncontrolled streams are zero for the State except for northeastern and south-central Oklahoma.
Techniques are described for using flood-insurance study information from the Federal Insurance Administration to analyze flood plain management alternatives. A method of developing rating curves which relate flood discharge to flood elevation is explained. Graphical methods of determining urban flood discharges are used in conjunction with rating curves to develop flood profiles resulting from future urban development. The graphical techniques were compared with standard step-backwater computations for two storms and errors were less than 0.5 foot, which are well within acceptable limits.