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Computerized delineation of watersheds using digital elevation model data

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dc.contributor.advisor Kimerling, A. Jon
dc.creator Flewelling, Douglas Mark
dc.date.accessioned 2008-10-16T20:28:53Z
dc.date.available 2008-10-16T20:28:53Z
dc.date.copyright 1983-07-27
dc.date.issued 1983-07-27
dc.identifier.uri http://hdl.handle.net/1957/9526
dc.description Graduation date: 1984 en_US
dc.description.abstract A method for delineating watersheds by computer using digital elevation model (OEM) data is presented. The five steps in this process are detailed and examples are shown. The algorithm was tested using a manually created OEM for a small area in Northern California. Three basins were delineated using the delineation algorithm and compared to the same basins delineated by manual map interpretation. The computer basins correlated closely to the manually delineated ones with correlation factors of around 75%. A second test of the algorithm was made to determine the effects of OEM resolution on the correlation factors. Four DEMs with cell sizes ranging from 333 feet to 1000 feet on the ground were used. As the OEM resolution became finer the correlation factor declined. The correlation factors ranged from 73% to 92%. The significance of these results and areas for further research are discussed. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Watersheds -- Computer simulation en_US
dc.title Computerized delineation of watersheds using digital elevation model data en_US
dc.type Thesis en_US
dc.degree.name Master of Science (M.S.) in Geography en_US
dc.degree.level Master's en_US
dc.degree.discipline Science en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization Master files scanned at 600 ppi (256 Grayscale) using Capture Perfect 3.0 on a Canon DR-9080C in TIF format. PDF derivative scanned at 300 ppi (256 Grayscale), using Capture Perfect 3.0, on a Canon DR-9080C. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US


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