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Watershed Analysis for Runoff and Erosion Potential on Santa Cruz Watershed: Impact of Climate and Land Cover Changes
Citation:
YUAN, Y. AND W. Nie. Watershed Analysis for Runoff and Erosion Potential on Santa Cruz Watershed: Impact of Climate and Land Cover Changes. Presented at Fourth International Perspective on Sustainable Environmental & Water Resources Management. Biopolis Conference Center, Singapore, SINGAPORE, January 04 - 06, 2011.
Impact/Purpose:
Presentation materials
Description:
Many empirical studies have established the significant relationship between climate and runoff: climate change may potentially increase or decrease the surface runoff. Increased surface runoff can also increase the risk of soil erosion. Land cover change can alter rainfall-runoff relationships and risk to soil erosion; a decrease in natural vegetation increases risk of soil erosion. High soil erosion can lead to increases in sediment loadings to surface waters and potential future water quality problems. The objective of this study is to quantify watershed response in the fonn of runoff volume, peak discharge. and total sediment yield to climate and land cover changes in the Santa Cruz Watershed (Arizona. USA and Sonora. Mexico). Historic weather data including temperature and precipitation (1908-2008), as well as USGS observed stream flow, peak discharge. and water quality will be analyzed to determine changes in runoff and its relationship to erosion. Changes of runoff and erosion across the watershed will also be spatially analyzed using USGS gauge data from different stations. Through this study. the relative sensitivity of runoff and erosion across the watershed will be identified in order to focus future studies in the watershed.
URLs/Downloads:
YUAN 10-033 ABSTRACT..PDF (PDF, NA pp, 244 KB, about PDF)YUAN 10-033 FINAL SLIDE PRESENTATION..PDF (PDF, NA pp, 1546 KB, about PDF)