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

Eash, David A.; Geological Survey (U.S.)

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

2003-01-01
By Eash, David A.

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English

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Alternative Title:

Water-Resources Investigations Report 03-4120
Creators:

Eash, David A.
Corporate Creators:

Geological Survey (U.S.)
Corporate Contributors:

Iowa. Dept. of Transportation ; Iowa. Highway Research Board

Iowa. Dept. of Transportation ; Iowa. Highway Research Board Less -
Subject/TRT Terms:

[+]

Flood Forecasting--Iowa Flood Protection Flood Routing Floods Floods--Iowa Hydrologic Phenomena Streamflow Streamflow--Iowa Stream Measurements--Iowa Water Control
Publication/ Report Number:

03-4120
Resource Type:

Tech Report
Geographical Coverage:

Iowa
Corporate Publisher:

United States. Geological Survey (USGS)
Abstract:

This report describes a statewide study

conducted to develop main-channel slope (MCS)

curves for 138 selected streams in Iowa with

drainage areas greater than 100 square miles.

MCS values determined from the curves can be

used in regression equations for estimating floodfrequency

discharges. Multivariable regression

equations previously developed for two of the

three hydrologic regions defined for Iowa require

the measurement of MCS. Main-channel slope is

a difficult measurement to obtain for large streams

using 1:24,000-scale topographic maps. The

curves developed in this report provide a simplified

method for determining MCS values for sites

located along large streams in Iowa within hydrologic

Regions 2 and 3.
Format:

PDF
Collection(s):

US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:8f5b0c6efe9a8a85ee528815a8595fa13c865d7cf12ce79ebc60c7664459bf1e
Download URL:

https://rosap.ntl.bts.gov/view/dot/23682/dot_23682_DS1.pdf
File Type:

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

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