A Case Study On Gerugu Dam Overtopping Under Different PMP Scenarios

Authors

  • Heng Hock Hwee
  • Hii Ching Poon

DOI:

https://doi.org/10.33736/jcest.107.2013

Abstract

A hydrological dam safety inspection was carried out for existing Gerugu dam (CA= 14 km2) by evaluating the hydrological performance of the bellmouth spillway in light of two different sets of Probable Maximum Precipitation (PMP).  For safety reason, it is utmost important that the flood rise does not exceed the embankment dam crest level (ECL).  Gerugu dam (CA= 14 km2) is a small catchment earthfill zoned embankment dam that supplies raw waters to the water treatment plant downstream. 

This study selects both “coastal” type of PMP [13], [14] which is mostly representative of the extreme precipitation parameters adopted in the design of the dam and a recent set of PMP under NAHRIM [11] study.  A catchment routing procedure is then used to translate the PMPs to PMFs for 1- to 120-hour duration and a conventional reservoir routing in tandem to estimate the outflows and corresponding flood rise over the full supply level (FSL) of the reservoir. The dam is considered safe under both coastal and NAHRIM [11] PMP scenarios as the flood rises for all cases are confined below the embankment crest level (ECL), i.e. +33.0 m msl. 

References

Al Maimum, A, and A. Hashim. 2004. Generalized Long Duration Probable Maximum Precipitation Isohyetal Map for Peninsular Malaysia. J. Spatial Hydrology, vol. 4(1) pp 212-234.

Atikah, (2009). Extreme Flood Event: A Case Study on Floods of 2006 and 2007 in Johor, Malaysia. Technical Report. Colorado State University, Fort Collins, CO, USA.W.-K. Chen, Linear Networks and Systems (Book style). Belmont, CA: Wadsworth, 1993, pp. 123-135.

Australia Bureau of Meteorology (2003) The Estimation of Probable Maximum Precipitation in Australia: Generalized Short-Duration Method, Bureau of Meteorology, Melbourne, Australia.

Chow, V.T., D.R. Maidment, and L. Mays (1988). Applied Hydrology. McGraw Hill, New York, New York.

Coleman, S.E., D. P. Andews, and M.G. Webby. (2002). Overtopping of Noncohensive Homogeneous Embankment. Journal of Hydraulic Engineering, 128(9), pp 829-830.

https://doi.org/10.1061/(ASCE)0733-9429(2002)128:9(829)

Desa MN., A. B. Noriah, P. R. Rakhecha (2001) Probable maximum precipitation for 24 h duration over southeast Asian monsoon region-Selangor, Malaysia. Atmospheric Research, Volume 58, Issue 1, June 2001, Pages 41-54

https://doi.org/10.1016/S0169-8095(01)00070-9

Desa MN and PR Rakhecha, (2007) Probable maximum precipitation for 24-h duration over an equatorial region: Part 2-Johor, Malaysia. Atmospheric Research Volume 84, Issue 1, Pages 84-90

https://doi.org/10.1016/j.atmosres.2006.06.005

FEMA (2004). Federal Guideline for Dam Safety: Selecting and Accommodating Inflow Floods for Dams. US Department of Homeland Security, Federal Emergency Management Agency, Washington, DC. USA.

Heng HH & CP Hii, (2011). A Review on PMP Estimation in Malaysia. Int. Jour. Hydrology Science and Technology. Vol 1 No. ½ pp 63-87.

https://doi.org/10.1504/IJHST.2011.040741

Khoo, F.W.L, Law, P.L., Lai, S.H., Onn, Y.W., and Ting. H.S. (2009). Quantitative Dam Break Analysis on a Reservoir Earth Dam. Int. J. Envron. Sci. Tech., 6(2). 203-210.

https://doi.org/10.1007/BF03327623

NAHRIM (2008). Derivation of Probable Maximum Precipitation for Design Floods in Malaysia. Technical research publication (TRP) No. 1, Ministry of Natural Resources and Environment, Kuala Lumpur, Malaysia.

Nippon Koei and SMHB. (2000). Nippon Koei in association with SMHB, 2000. Pahang- Selangor Raw Water Transfer Project Engineering Services and Detailed Engineering Design: Hydrograph, Final Report. Malaysia, JBA, JKR.

SMHB (1992). Study on Comprehensive Water Resources Planning and Development in the State of Pahang. Final report. Economic Planning Unit. Government of Malaysia.

SMHB (1994). Study on Comprehensive Water Resources Planning and Development in the State of Johor. Final report. Economic Planning Unit. Government of Malaysia.

SMHB, Ranhill Bersekutu, and Jurutera Perunding Zaaba (2000). National Water Resources Study 2000-2050. Economic Planning Unit, Government of Malaysia.

SSP and SMHB (1997). Kelantan River Flood Mitigation Project: Feasibility Study. Jabatan Pengairan dan Saliran, Kuala Lumpur, Malaysia.

Taylor, M.A.W and Y.K.Toh (1976). Design Flood Hydrograph Estimation for Rural Catchments in Peninsular Malaysia. Kuala Lumpur, Hydrological Procedure No: 11. (HP 11) Jabatan Pengaliran dan Saliran, Ministry of Agriculture ,Malaysia.

Tingsanchali, T. and S. Tanmanee. (2012). Assessment of Hydrological Safety of Maei Sruai Dam, Thailand. Procedia Engineering, 32, pp 1198-1204.

https://doi.org/10.1016/j.proeng.2012.02.077

Vischer, D.L. and W. H. Hager (1998). Dam Hydraulics, Wiley, New York, New York.

WMO (1986). Manual on Estimation of Probable Maximum Precipitation. Operational Hydrology Report No. 332, World Meteorological Organization, Geneva

WMO (2009). Manual on Estimation of Probable Maximum Precipitation. Operational Hydrology Report No. 1045, World Meteorological Organization, Geneva

www.icold.org

Downloads

Published

2013-04-01

How to Cite

Hock Hwee, H., & Ching Poon, H. (2013). A Case Study On Gerugu Dam Overtopping Under Different PMP Scenarios. Journal of Civil Engineering, Science and Technology, 4(1), 40–49. https://doi.org/10.33736/jcest.107.2013

Issue

Section

Articles