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    A lidar-based approach to measure channel incision in headwater streams in an urbanizing landscape

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    Metes_umbc_0434M_11948.pdf (9.557Mb)
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    http://hdl.handle.net/11603/20690
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    • UMBC Geography and Environmental Systems Department
    • UMBC Graduate School
    • UMBC Student Collection
    • UMBC Theses and Dissertations
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    Author/Creator
    Metes, Marina Jean
    Date
    2018-01-01
    Type of Work
    application:pdf
    Text
    theses
    Department
    Geography and Environmental Systems
    Program
    Geography and Environmental Systems
    Rights
    Distribution Rights granted to UMBC by the author.
    Access limited to the UMBC community. Item may possibly be obtained via Interlibrary Loan thorugh a local library, pending author/copyright holder's permission.
    This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
    Subjects
    headwater stream
    incision
    lidar
    urbanization
    Abstract
    Stream channel incision can occur following landscape disturbances commonly related to urbanization. A method was developed to map reach-scale incision from lidar-derived digital elevation models using topographic openness, a landscape metric measuring the enclosure of an area (i.e. channel bottoms) relative to the surrounding landscape (i.e. stream banks). The method was validated with field surveys and local photogrammetric models of stream banks. The method was then applied to watersheds undergoing urban development with lidar coverage for six time steps spanning an 11 year period. Channel incision was detected near the outlet of newly developed stormwater management facilities, but temporal analysis also identified areas already severely incised prior to urbanization, highlighting influence from previous agricultural land use, as well as areas that have resisted incision following urbanization. Although incision patterns varied across each watershed, there appeared to be no direct connection to the placement of SWM facilities beyond outlets.


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    www.umbc.edu/scholarworks

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    Albin O. Kuhn Library & Gallery
    University of Maryland, Baltimore County
    1000 Hilltop Circle
    Baltimore, MD 21250
    www.umbc.edu/scholarworks

    Contact information:
    Email: scholarworks-group@umbc.edu
    Phone: 410-455-3544


    If you wish to submit a copyright complaint or withdrawal request, please email mdsoar-help@umd.edu.