Establish Effective Lower Bounds of Watershed Slope for Traditional Hydrologic Methods

Cleveland, Theodore G.; Thompson, David B.; Fang, Xing; Li, Ming-Han

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Establish Effective Lower Bounds of Watershed Slope for Traditional Hydrologic Methods

2012-06-01
By Cleveland, Theodore G. ; Thompson, David B. ; Fang, Xing

File Language:

English

Details

Creators:

Cleveland, Theodore G. ; Thompson, David B. ; Fang, Xing ; Li, Ming-Han
Corporate Creators:

Texas Tech University. College of Engineering
Corporate Contributors:

Texas. Dept. of Transportation. Research and Technology Implementation Office ; United States. Federal Highway Administration
Subject/TRT Terms:
Publication/ Report Number:

FHWA/TX¿12/0¿6382-1 ; Report No. 0¿6382-1
Resource Type:

Tech Report
Geographical Coverage:

Texas
Edition:

Technical report; Sept. 2008-Aug. 2011.
Corporate Publisher:

Texas Tech University. Center for Multidisciplinary Research in Transportation
Abstract:

Equations to estimate timing parameters for a watershed contain watershed slope as a principal parameter and ; estimates are usually inversely proportional to topographic slope. Hence as slope vanishes, the estimates approach ; infinity. The research identified, from literature, data, modeling, and physical experiments, the dimensionless ; topographic slope where “low-slope” behavior should be assumed. ; Alternate timing equations based from parametric studies using the Diffusion Hydrodynamic Model (DHM) were ; developed. A slope-offset approach was explored and is suggested as an adaptation of current technology. The ; offset value suggested is 0.0005 and an illustrative example is presented in this report. The dimensionless slope ; suggested for consideration of alternate approaches is 0.003. ; The researchers found that current streamgaging techniques are not well suited to low-slope hydrologic studies and ; different measuring methods are suggested.
Format:

PDF
Funding:

Project 0¿6382
Download URL:

https://rosap.ntl.bts.gov/view/dot/25168/dot_25168_DS1.pdf
File Type:

[PDF - 4.38 MB]
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha256:f824496f86383db3e1590a9c7fccca0f4f60c58785808aee67db6d56edbedfc0

File Language:

English

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