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Watershed delineation in a low topographic relief landscape of south Florida

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Date Issued:
1998
Summary:
Watershed delineations in low topographic relief landscapes with canal networks require hydrography. This hypothesis was tested by utilizing digital elevation models (DEMs). Seven DEMs were processed using two automated delineation methods. Both methods include filling of localized sinks, but an enhanced method incorporated incremental "tipping" to provide flow direction. In two watersheds studied, DEMs with only topography delineated watersheds within 24% and 84% of the manual delineation. With the addition of hydrography, including canals, both watersheds were delineated to within 85% and 92% of the manual delineation. Contrary to the assumption that tipping would improve delineation, tipping decreased the delineated area by removing a water flow path. Based on this research, DEM input data and delineation method strongly influence automated watershed delineations in low relief conditions.
Title: Watershed delineation in a low topographic relief landscape of south Florida.
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Name(s): Rose, Michael T.
Florida Atlantic University, Degree grantor
Shaw, Shih-Lung, Thesis advisor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1998
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 104 p.
Language(s): English
Summary: Watershed delineations in low topographic relief landscapes with canal networks require hydrography. This hypothesis was tested by utilizing digital elevation models (DEMs). Seven DEMs were processed using two automated delineation methods. Both methods include filling of localized sinks, but an enhanced method incorporated incremental "tipping" to provide flow direction. In two watersheds studied, DEMs with only topography delineated watersheds within 24% and 84% of the manual delineation. With the addition of hydrography, including canals, both watersheds were delineated to within 85% and 92% of the manual delineation. Contrary to the assumption that tipping would improve delineation, tipping decreased the delineated area by removing a water flow path. Based on this research, DEM input data and delineation method strongly influence automated watershed delineations in low relief conditions.
Identifier: 9780591930009 (isbn), 15583 (digitool), FADT15583 (IID), fau:12343 (fedora)
Note(s): Charles E. Schmidt College of Science
Thesis (M.A.)--Florida Atlantic University, 1998.
Subject(s): Digital mapping
Watersheds--Florida
Florida--Maps
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/15583
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.