Menu
×
West Ashley Library
Closed
Phone: (843) 766-6635
Wando Mount Pleasant Library
Closed
Phone: (843) 805-6888
Village Library
Closed
Phone: (843) 884-9741
St. Paul's/Hollywood Library
Closed
Phone: (843) 889-3300
Otranto Road Library
Closed
Phone: (843) 572-4094
Mt. Pleasant Library
Closed
Phone: (843) 849-6161
McClellanville Library
Closed
Phone: (843) 887-3699
Keith Summey North Charleston Library
Closed
Phone: (843) 744-2489
John's Island Library
Closed
Phone: (843) 559-1945
Hurd/St. Andrews Library
Closed
Phone: (843) 766-2546
Folly Beach Library
Closed
Phone: (843) 588-2001
Edisto Island Library
Closed
Phone: (843) 869-2355
Dorchester Road Library
Closed
Phone: (843) 552-6466
John L. Dart Library
Closed
Phone: (843) 722-7550
Baxter-Patrick James Island
Closed
Phone: (843) 795-6679
Main Library
2 p.m. – 5 p.m.
Phone: (843) 805-6930
Bees Ferry West Ashley Library
Closed
Phone: (843) 805-6892
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
Mobile Library
Closed
Phone: (843) 805-6909
Today's Hours
West Ashley Library
Closed
Phone: (843) 766-6635
Wando Mount Pleasant Library
Closed
Phone: (843) 805-6888
Village Library
Closed
Phone: (843) 884-9741
St. Paul's/Hollywood Library
Closed
Phone: (843) 889-3300
Otranto Road Library
Closed
Phone: (843) 572-4094
Mt. Pleasant Library
Closed
Phone: (843) 849-6161
McClellanville Library
Closed
Phone: (843) 887-3699
Keith Summey North Charleston Library
Closed
Phone: (843) 744-2489
John's Island Library
Closed
Phone: (843) 559-1945
Hurd/St. Andrews Library
Closed
Phone: (843) 766-2546
Folly Beach Library
Closed
Phone: (843) 588-2001
Edisto Island Library
Closed
Phone: (843) 869-2355
Dorchester Road Library
Closed
Phone: (843) 552-6466
John L. Dart Library
Closed
Phone: (843) 722-7550
Baxter-Patrick James Island
Closed
Phone: (843) 795-6679
Main Library
2 p.m. – 5 p.m.
Phone: (843) 805-6930
Bees Ferry West Ashley Library
Closed
Phone: (843) 805-6892
Edgar Allan Poe/Sullivan's Island Library
Closed for renovations
Phone: (843) 883-3914
Mobile Library
Closed
Phone: (843) 805-6909
Patron Login
menu
Item request has been placed!
×
Item request cannot be made.
×
Processing Request
Application of the HEC-HMS model for runoff simulation in a tropical catchment.
Item request has been placed!
×
Item request cannot be made.
×
Processing Request
- Author(s): Halwatura, D.1; Najim, M.M.M.1
- Source:
Environmental Modelling & Software. Aug2013, Vol. 46, p155-162. 8p.- Subject Terms:
- Source:
- Additional Information
- Abstract: Abstract: Hydrologic simulation employing computer models has advanced rapidly and computerized models have become essential tools for understanding human influences on river flows and designing ecologically sustainable water management approaches. The HEC-HMS is a reliable model developed by the US Army Corps of Engineers that could be used for many hydrological simulations. This model is not calibrated and validated for Sri Lankan watersheds and need reliable data inputs to check the suitability of the model for the study location and purpose. Therefore, this study employed three different approaches to calibrate and validate the HEC-HMS 3.4 model to Attanagalu Oya (River) catchment and generate long term flow data for the Oya and the tributaries. Twenty year daily rainfall data from five rain gauging stations scattered within the Attanagalu Oya catchment and monthly evaporation data for the same years for the agro meteorological station Henarathgoda together with daily flow data at Dunamale from 2005 to 2010 were used in the study. GIS layers that were needed as input data for the flow simulation were prepared using Arc GIS 9.2 and used in the HEC-HMS 3.4 calibration of the Dunamale sub catchment using daily flow data from 2005 to 2007. The model was calibrated adjusting three different methods. The model parameters were changed and the model calibration was performed separately for the three selected methods, the Soil Conservation Service Curve Number loss method, the deficit constant loss method (the Snyder unit hydrograph method and the Clark unit hydrograph method) in order to determine the most suitable simulation method to the study catchment. The calibrated model was validated with a new set of rainfall and flow data (2008–2010). The flows simulated from each methods were tested statistically employing the coefficient of performance, the relative error and the residual method. The Snyder unit hydrograph method simulates flows more reliably than the Clark unit hydrograph method. As the loss method, the SCS Curve Number method does not perform well. [Copyright &y& Elsevier]
- Abstract: Copyright of Environmental Modelling & Software is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Abstract:
Contact CCPL
Copyright 2022 Charleston County Public Library Powered By EBSCO Stacks 3.3.0 [350.3] | Staff Login
No Comments.