Volume 7, Issue 1, March 2019, Page: 1-9
A GIS Based Assessment of a Dynamic Watershed in Guam
Sydonia Manibusan, Water and Environmental Research Institute, University of Guam, Mangilao, Guam
Shahram Khosrowpanah, School of Engineering, University of Guam, Mangilao, Guam
Mark Alan Lander, Water and Environmental Research Institute, University of Guam, Mangilao, Guam
Mohammad Golabi, College of Natural and Applied Sciences, University of Guam, Mangilao, Guam
Ujwalkumar Dashrath Patil, School of Engineering, University of Guam, Mangilao, Guam
Received: Dec. 26, 2018;       Accepted: Jan. 14, 2019;       Published: Jan. 31, 2019
DOI: 10.11648/j.hyd.20190701.11      View  242      Downloads  37
Abstract
This paper presents an analysis of the potential impact of existing and proposed natural and human activities on the behavior of existing watershed and suggests recommendations to effectively manage such activities to reduce the detrimental impacts on the watershed. The hydrologic behavior of the Piti-Asan watershed in Guam was analyzed through the field measurements of rainfall, stream level, stream flow, and river turbidity over the course of one year. Estimates of the erosion contribution by areas within the watershed and in particular, within 100-meter buffer zone around the major rivers were conducted based on the data collected via field instrumentation and using the geographic information system (GIS) based erosion model. Stage discharge curves were obtained for both watersheds from analyses of field hydrologic data. In addition, the areas contributing the most potential erosion and the major causes of soil erosion in the Piti-Asan watershed were identified. Finally, best management strategies of the watershed system to aid in maximizing the effectiveness and viability of future restoration efforts were suggested.
Keywords
Watershed, GIS-Based Erosion Model, Turbidity, Stage Discharge Curve, Watershed Management Practices
To cite this article
Sydonia Manibusan, Shahram Khosrowpanah, Mark Alan Lander, Mohammad Golabi, Ujwalkumar Dashrath Patil, A GIS Based Assessment of a Dynamic Watershed in Guam, Hydrology. Vol. 7, No. 1, 2019, pp. 1-9. doi: 10.11648/j.hyd.20190701.11
Copyright
Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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