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Saturday, August 8, 2020 | History

2 edition of Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges found in the catalog.

Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges

David A Eash

Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges

by David A Eash

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  • 20 Currently reading

Published by U.S. Dept. of the Interior, U.S. Geological Survey, U.S. Geological Survey, Information Services [distributor] in Iowa City, Iowa, Denver, CO .
Written in English

    Subjects:
  • Stream measurements -- Iowa,
  • Streamflow -- Iowa,
  • Floods -- Iowa,
  • Flood forecasting -- Iowa

  • Edition Notes

    Includes bibliographical references (p. 22-23)

    Other titlesMain channel slopes of selected streams in Iowa for estimation of flood frequency discharges
    Statementby David A. Eash ; prepared in cooperation with the Iowa Department of Transportation and the Iowa Highway Research Board (project HR-456)
    SeriesWater-resources investigations report -- 03-4120
    ContributionsGeological Survey (U.S.), Iowa. Dept. of Transportation, Iowa. Highway Research Board
    The Physical Object
    Paginationvi, 215 p. :
    Number of Pages215
    ID Numbers
    Open LibraryOL18142704M

    Flood-frequency characteristics for gaged sites on unregulated rural streams in Wisconsin are presented for percent annual exceedance probabilities ranging from to 50 using a statewide skewness map developed for this report. Equations of the relations between flood-frequency and drainage-basin characteristics were developed by multiple-regression by: Estimation of Flood Discharges at Selected Recurrence Intervals for Streams in New Hampshire: Olson, Scott A.: Books - or: Scott A. Olson.

    Estimation of flood discharges at selected recurrence intervals for streams in New Hampshire [electronic resource] / by Scott A. Olson ; prepared in cooperation with the New Hampshire Department of Transportation. Format Online Resource Book Published Reston, Va.: . TABLE OF CONTENTS ~ PRELIMINARY Stream and river crossings Hydrology USGS - SIR - Methods for Estimating Annual Exceedance-Probability Discharges for Streams in Iowa - Based on Data through Water Year Provides Expected Moments including the Main-Channel Slope (MCS) variable, must be calculated by theFile Size: KB.

    Improved Methods of Parameterization for Estimating the Magnitude and Frequency of Peak Discharges in Rural Ungaged Streams Article (PDF Available) in . Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.


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Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges by David A Eash Download PDF EPUB FB2

Main-Channel Slopes of Selected Streams in Iowa for Estimation of Flood-Frequency Discharges Water-Resources Investigations Report 50 75 ^ DISTANCE UPSTREAM FROM MOUTH OF RACCOON RIVER, IN MILES U.S. Department of the Interior U.

This report describes a statewide study conducted to develop main-channel slope (MCS) curves for selected streams in Iowa with drainage areas greater than square miles. MCS values determined from the curves can be used in regression equations for estimating flood frequency discharges.

Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges [David A. Eash] on *FREE* shipping on qualifying : David A. Eash. This report describes a statewide study conducted to develop main-channel slope (MCS) curves for selected streams in Iowa with drainage areas greater than square miles.

Genre/Form: Government publications Electronic government information: Additional Physical Format: Online version: Eash, David A. Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges. Main-channel slope is a difficult measurement to obtain for large streams using ,scale topographic maps.

The curves developed in this report provide a simplified\ud method for determining MCS values for sites located along large streams in Iowa within hydrologic Regions 2 and 3. The regression equations can be used to estimate flood discharges that have recurrence intervals of 2, 5, 10, 25, 50, and years for ungaged stream sites in Iowa.

One-variable equations were developed for each of the three regions and multi-variable equations were developed for two of. Locations of selected West Virginia streams are shown in figure 1.

A list of flood dates with a brief description of the flood and the report that docu- ments the flood follows. • July Flooding on the Cheat River was docu- mented by Speer and Gamble (, p. ).File Size: 2MB. Abstract. This report provides estimates of flood discharges at selected annual exceedance probabilities (AEPs) for streamgages in and adjacent to Vermont and equations for estimating flood discharges at AEPs of,4- 2- 1-,and percent (recurrence intervals of 2- 5-,and years, respectively) for ungaged, unregulated, rural streams.

Flood-frequency discharges were determined for streamgage stations having a minimum of 9 years of record in West Virginia and surrounding states through the or water year. No trend was determined in the annual peaks used to calculate the flood-frequency discharges.

flood frequency estimation for small Iowa streams, two of which are recommended for use in urban setting by the Iowa Statewide Urban Design and Specifications (SUDAS) manual. For drainage areas of acres or less, flood frequency estimates based on the Rational Method were found to significantly underpredict estimates based on streamgage data.

Transportation. Two new flood-estimation methods for Iowa, which are presumed to be independent from each other, were used in this study. An advantage in developing flood- frequency equations using two independent flood-estimation methods is that each method can Cited by: Buy Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges (Water-resources investigations report) by David A Eash (ISBN:) from Amazon's Book Store.

Everyday low prices and free delivery on eligible : David A Eash. E) Rept. - "Main-Channel Slopes of Selected Streams in Iowa for Estimation of Flood-Frequency Discharges", USGS Water Resources Investigation Report 3) MCS values determined using GIS (StreamStats, ArcHydro, etc.) are generally lower than the manual MCS determination methods used to develop the Rept.

equations. 6 Estimation of Flood Discharges at Selected Recurrence Intervals for Streams in New Hampshire Table 2. Differences between the year flood discharge computed from the period of record and from the period – for selected streamgages in and adjacent to New Size: 2MB.

Estimation of Flood Discharges at Selected Recurrence Intervals for Streams in New Hampshire (USGS Scientific Investigations) [Scott A. Olson] on *FREE* shipping on qualifying offers. This report provides estimates of flood discharges at selected recurrence intervals for streamgages in and adjacent to New Hampshire and equations for estimating flood discharges at recurrence Cited by: 8.

year flood discharges on unregulated streams in rural Missouri. The regression equations for Regions I and II were developed from stream-flow-gaging stations with drainage areas ranging from to 11, square miles and to 14, square miles, and main-channel slopes ranging from to f eet per mile and to feet per Size: 3MB.

Main-channel slopes of selected streams in Iowa for estimation of flood-frequency discharges by David A Eash (Book) 2 editions published in in English and held by WorldCat member libraries worldwide.

This report provides estimates of flood discharges at selected recurrence intervals for streamgages in and adjacent to New Hampshire and equations for estimating flood discharges at recurrence intervals of 2- 5- and years for ungaged, unregulated, rural streams in New Hampshire. The objective of this project is to assess the predictive accuracy of flood frequency estimation for the Rational Method, the NRCS curve number approach, and the Iowa Runoff Chart, for applications to small Iowa streams (drainage areas of acres or less).

The evaluation is based on comparisons of flood frequency estimates at. ESTIMATING DESIGN-FLOOD DISCHARGES FOR STREAMS IN IOWA USING DRAINAGE-BASIN AND CHANNEL-GEOMETRY CHARACTERISTICS By David A. Eash ABSTRACT Drainage-basin and channel-geometry multiple-regression equations are presented for estimating design-flood discharges having recurrence intervals of 2, 5, 10, 25, 50, and A statewide study was performed to develop regional regression equations for estimating selected annual exceedance- probability statistics for ungaged stream sites in Iowa.

The study area comprises streamgages located within Iowa and 50 miles beyond the State’s borders. Annual exceedanceprobability estimates were computed for streamgages by using the expected moments algorithm to fit a.2 Techniques for Estimating Flood-Peak Discharges of Rural, Unregulated Streams in Ohio and private citizens and, at times, may even make the differ-ence between life and death.

The most recent report presenting flood-frequency data and estimation techniques applicable to Ohio streams was published in (Koltun and Roberts, ). Since.