Estimation of main channel length from basin length for selected small watersheds in Texas using 10- and 30-meter digital elevation models

Franklin T Heitmuller; William H Asquith; Theodore Cleveland; Xing Fang; David Thompson

Estimation of main channel length from basin length for selected small watersheds in Texas using 10- and 30-meter digital elevation models

Franklin T Heitmuller, William H Asquith, Theodore Cleveland, Xing Fang, David Thompson

Civil Environ Construct Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The statistical relation between main channel length (MCL) and basin length (BLENG) was investigated for 96 small watersheds in central Texas. MCL and BLENG were calculated using 10- and 30-meter digital elevation models (DEM). Because of a possible curvilinear relation between MCL and BLENG for watersheds with BLENG greater than about 16 kilometers, linear equations were developed for watersheds with BLENG less than 16 kilometers. The equation for the 10-meter DEM-derived characteristics based on 54 stations is MCL equals 1.21 times BLENG; and the equation for the 30-meter DEM-derived characteristics based on 74 stations is MCL equals 1.16 times BLENG. Therefore, the equation to rapidly estimate MCL from BLENG for small watersheds is MCL equals 1.2 times BLENG. The limited difference between the equations sug- gests that accuracy of some small watershed characteristics is not greatly increased through the use of 10-meter DEMs.

Original language	English
Pages (from-to)	23–35
Journal	The Southwestern Geographer
State	Published - 2006

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@article{428e9c16dfa4495db884bc9b0fb4aea3,

title = "Estimation of main channel length from basin length for selected small watersheds in Texas using 10- and 30-meter digital elevation models",

abstract = "The statistical relation between main channel length (MCL) and basin length (BLENG) was investigated for 96 small watersheds in central Texas. MCL and BLENG were calculated using 10- and 30-meter digital elevation models (DEM). Because of a possible curvilinear relation between MCL and BLENG for watersheds with BLENG greater than about 16 kilometers, linear equations were developed for watersheds with BLENG less than 16 kilometers. The equation for the 10-meter DEM-derived characteristics based on 54 stations is MCL equals 1.21 times BLENG; and the equation for the 30-meter DEM-derived characteristics based on 74 stations is MCL equals 1.16 times BLENG. Therefore, the equation to rapidly estimate MCL from BLENG for small watersheds is MCL equals 1.2 times BLENG. The limited difference between the equations sug- gests that accuracy of some small watershed characteristics is not greatly increased through the use of 10-meter DEMs.",

author = "Heitmuller, {Franklin T} and Asquith, {William H} and Theodore Cleveland and Xing Fang and David Thompson",

year = "2006",

language = "English",

pages = "23–35",

journal = "The Southwestern Geographer",

publisher = "Southwest Division of the American Association of Geographers",

}

TY - JOUR

T1 - Estimation of main channel length from basin length for selected small watersheds in Texas using 10- and 30-meter digital elevation models

AU - Heitmuller, Franklin T

AU - Asquith, William H

AU - Cleveland, Theodore

AU - Fang, Xing

AU - Thompson, David

PY - 2006

Y1 - 2006

N2 - The statistical relation between main channel length (MCL) and basin length (BLENG) was investigated for 96 small watersheds in central Texas. MCL and BLENG were calculated using 10- and 30-meter digital elevation models (DEM). Because of a possible curvilinear relation between MCL and BLENG for watersheds with BLENG greater than about 16 kilometers, linear equations were developed for watersheds with BLENG less than 16 kilometers. The equation for the 10-meter DEM-derived characteristics based on 54 stations is MCL equals 1.21 times BLENG; and the equation for the 30-meter DEM-derived characteristics based on 74 stations is MCL equals 1.16 times BLENG. Therefore, the equation to rapidly estimate MCL from BLENG for small watersheds is MCL equals 1.2 times BLENG. The limited difference between the equations sug- gests that accuracy of some small watershed characteristics is not greatly increased through the use of 10-meter DEMs.

AB - The statistical relation between main channel length (MCL) and basin length (BLENG) was investigated for 96 small watersheds in central Texas. MCL and BLENG were calculated using 10- and 30-meter digital elevation models (DEM). Because of a possible curvilinear relation between MCL and BLENG for watersheds with BLENG greater than about 16 kilometers, linear equations were developed for watersheds with BLENG less than 16 kilometers. The equation for the 10-meter DEM-derived characteristics based on 54 stations is MCL equals 1.21 times BLENG; and the equation for the 30-meter DEM-derived characteristics based on 74 stations is MCL equals 1.16 times BLENG. Therefore, the equation to rapidly estimate MCL from BLENG for small watersheds is MCL equals 1.2 times BLENG. The limited difference between the equations sug- gests that accuracy of some small watershed characteristics is not greatly increased through the use of 10-meter DEMs.

M3 - Article

SP - 23

EP - 35

JO - The Southwestern Geographer

JF - The Southwestern Geographer

ER -