Analysis of Drought Severity Level as a Hydrological Disaster Mitigation Effort in Sub-Watershed of Krueng Jreue, Aceh Besar Regency-Indonesia

APA 6th edition
In-text: (Helmi, Basri, Sufardi & Helmi, 2017)
Your Bibliography: Helmi, , Basri, H., Sufardi, & Helmi, (2017). Analysis of Drought Severity Level as a Hydrological Disaster Mitigation Effort in Sub-Watershed of Krueng Jreue, Aceh Besar Regency-Indonesia. International Journal of Environmental and Science Education, 12(10), 2385-2400.

Harvard
In-text: (Helmi, Basri, Sufardi and Helmi, 2017)
Your Bibliography: Helmi, , Basri, H., Sufardi, and Helmi, (2017). Analysis of Drought Severity Level as a Hydrological Disaster Mitigation Effort in Sub-Watershed of Krueng Jreue, Aceh Besar Regency-Indonesia. International Journal of Environmental and Science Education, 12(10), pp. 2385-2400.

Chicago 16th edition
In-text: (Helmi, Basri, Sufardi and Helmi 2017)
Your Bibliography: Helmi, , Hairul Basri, Sufardi and Helmi (2017). "Analysis of Drought Severity Level as a Hydrological Disaster Mitigation Effort in Sub-Watershed of Krueng Jreue, Aceh Besar Regency-Indonesia". International Journal of Environmental and Science Education 12 (10):2385-2400.

Abstract

Drought affects the availability of water reserves in the soil in Krueng Jreue Sub-Watershed, for the benefit of agriculture as well as for human needs. There were three stages of analysis for the research of the severity of the Krueng Jreue drought, namely: (1) identify the rainfall station for the area of study. Monthly rainfall data used is the result of observation data for 10 years (2005–2014) from two stations of rainfalls; Indrapuri and Jantho, according to isohyets method analysis; (2) analysis of precipitation to obtain meteorological drought index of each station with the method of precipitation Standardized Precipitation Index (SPI); and (3) analysis of interpolation method of Inverse Distance Weighted (IDW) drought index values of each rainfall stations to get the spread of drought. The results of the analysis using the method of SPI scale 3 monthly (SPI-3), indicating that the historical rainfall in 2005–2014 not experiencing dry conditions, because during the 12 months from January-December for 10 years, only in June-July-August (JJA) are experiencing conditions slightly dry with average drought index between (-1,23) – (-0,39). The rest of September-October-November (SON), December-January-February (DJF) and March-April-Mai (MAM) experienced a medium (normal) condition, the value of SPI in range (0,99) – (-0,99). Hydrological disaster mitigation efforts in the zone of the severity of the drought with the criteria slightly dry can be done by means of structural and non-structural. Structurally it is done through optimizing the development of dams and building Krueng Jreue, rehabilitation and maintenance of the irrigation network. The storage of excess water in the rainy season is for use in the dry season. Non-structural way is by making predictions of drought, drought index map, agroforestry, planting water-efficient plants, the use of mulch and organic materials.

Keywords: Standardized Precipitation Index, The severity of the drought, The spread of drought, Hydrological disaster mitigation, Sub-Watershed of Krueng Jreue

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