Characteristics and return period of hydrological drought base on reservoir capacity reliability: case study of Mamak Dam in Sumbawa Island, West Nusa Tenggara, Indonesia Online publication date: Mon, 26-Oct-2020
by I. Wayan Yasa; Mohammad Bisri; Moch Sholichin; Ussy Andawayanti
International Journal of Hydrology Science and Technology (IJHST), Vol. 10, No. 6, 2020
Abstract: The analysis of hydrological drought indices by using the reservoir will obtain an actual and real drought indefinite and have a clear physical meaning. In this research, we use daily data of the water level of reservoir, inflow and outflow. The research method used to obtain the hydrological drought index (HDI) is the water balance method in the reservoir. Based on selected distribution, for the estimation of drought in a certain return period using the log Pearson type III. The results showed that the extreme drought on Sumbawa Island took place on average for 265 days with a maximum deficit of 35,378 × 103 m3 from the effective storage. The hydrological drought index (HDI) ranges from −1.31 to −0.01 with very severe drought criteria to weak drought. The hydrologic drought in the return period of 1, 2, 5, 10, 25, 50, 100 and 200 years, i.e., respectively −0.01, −0.54, −0.90, −1.04 and −1.12.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Hydrology Science and Technology (IJHST):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com