Skip to main content

Physically Based, Hydrologic Model Results Based on Three Precipitation Products

Buy Article:

$43.00 plus tax (Refund Policy)

Abstract:  The main objective of the study is to examine the accuracy of and differences among simulated streamflows driven by rainfall estimates from a network of 22 rain gauges spread over a 2,170 km2 watershed, NEXRAD Stage III radar data, and Tropical Rainfall Measuring Mission (TRMM) 3B42 satellite data. The Gridded Surface Subsurface Hydrologic Analysis (GSSHA), a physically based, distributed parameter, grid‐structured, hydrologic model, was used to simulate the June‐2002 flooding event in the Upper Guadalupe River watershed in south central Texas. There were significant differences between the rainfall fields estimated by the three types of measurement technologies. These differences resulted in even larger differences in the simulated hydrologic response of the watershed. In general, simulations driven by radar rainfall yielded better results than those driven by satellite or rain‐gauge estimates. This study also presents an overview of effects of land cover changes on runoff and stream discharge. The results demonstrate that, for major rainfall events similar to the 2002 event, the effect of urbanization on the watershed in the past two decades would not have made any significant effect on the hydrologic response. The effect of urbanization on the hydrologic response increases as the size of the rainfall event decreases.
No References
No Citations
No Supplementary Data
No Data/Media
No Metrics

Document Type: Research Article

Affiliations: 1: Respectively, Graduate Research Assistant (Chintalapudi), Assistant Professor (Sharif), and Graduate Research Assistant (Elhassan), Department of Civil and Environmental Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249 2: Respectively, Graduate Research Assistant (Chintalapudi), Assistant Professor (Sharif), and Graduate Research Assistant (Elhassan), Department of Civil and Environmental Engineering, University of Texas at San Antonio, One UTSA Circle, San Antonio, Texas 78249 3: Graduate Research Assistant (Yeggina), Department of Civil Engineering, Indian Institute of Science, Bangalore, India 560012

Publication date: 2012-12-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more