Estimation of watershed lag times and times of concentration for the Kansas City Area : technical summary.

McEnroe, Bruce M.; Young, C. Bryan; Gamarra Zapata, Ricardo A.; Kansas. Dept. of Transportation. Bureau of Research

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Estimation of watershed lag times and times of concentration for the Kansas City Area : technical summary.

2016-04-01
By McEnroe, Bruce M. ; Young, C. Bryan ; Gamarra Zapata, Ricardo A.

[PDF-430.19 KB]

English

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Creators:

McEnroe, Bruce M. ; Young, C. Bryan ; Gamarra Zapata, Ricardo A.

McEnroe, Bruce M. ; Young, C. Bryan ; Gamarra Zapata, Ricardo A. Less -
Corporate Creators:

Kansas. Dept. of Transportation. Bureau of Research
Subject/TRT Terms:

[+]

Runoff Streamflow Watersheds
Publication/ Report Number:

KS-16-01
Resource Type:

Tech Report
Geographical Coverage:

Kansas
Corporate Publisher:

Kansas. Dept. of Transportation. Bureau of Research
Abstract:

The new lag-time equation for the Kansas City area performs better than the 2001 KU-KDOT equation for urban lag time, which was developed from a study of 14 gaged watersheds in Johnson County (McEnroe & Zhao, 2001). The main advantage of the new lag-time equation is that it accounts directly for the higher velocities in the paved and enclosed segments of the flow path. The new equation’s solid theoretical foundation is also an advantage.

Because time of concentration cannot be determined from gaging data, direct calibration of an equation for TC is not possible. However, time of concentration and lag time are closely related, so TC can be estimated from TL. The Natural Resources Conservation System (NRCS, 2010) recommends the approximation TC = 5/3 TL. The recommended time-of-concentration equation for the Kansas City area incorporates this approximation.
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PDF
Collection(s):

US Transportation Collection
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urn:sha256:3bd9db8cc6a5949a4eb7113c0a5c4593d0edf587801e0a039d727dc85690a9d3
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https://rosap.ntl.bts.gov/view/dot/30791/dot_30791_DS1.pdf
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Estimation of watershed lag times and times of concentration for the Kansas City Area : technical summary.

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