Drought expressed in terms of failure and shortage of rainfall is the major hazard that affects thernlivelihood of the Nyangatom people. The objective of this study was exploring the occurrence ofrndroughts and their impacts on water resources availability and Water Quality at NyangatomrnWoreda. Based on the result of the SPEI-3 month values was used represented in ( Annex4),therernare a severe drought on the study area from June 1999 and November, December 2010 thisrnimplies that the soil moisture, SPEI-6 month values SPEI value may also begin to be associatedrnwith anomalous stream flow and reservoir conditions deficit occurred from March 1997 ,SPEI12 to 24 month value , month duration were recorded in grid cells in one periods, namely in thernyears 1999-2003 this implies that the deficit surface water and ground water. In addition tornresult of the study indicated in SPEI â€“index, the SPEI value is less than or equal to âˆ’1 observedrnthat the occurrence of months in which drought was detected in all severity classes within thernrange 72-81 and corresponds to about 19-21% of the entire time under analysis and also SPEIrntime series -1, 3,6,12 and 24 calculation, drought severity, duration and intensity were analysisrnobtained maximum duration of grid point, SPEI-24 has shown in (Figure .8) ranges between 3-7rnyears in category short until long duration ,the highest severity recorded at the meteorologicalrngrid point occurred SPEI result at 1999-2003 which a peak of drought with index value range -rn1.38 up to -6.20 (extremely dry) and Highest intensity that occurred in grid cell -1.09 in 2009 torn2012 the highest intensity for SPEI-24 was recorded in meteorology station. SPEI â€“index,rnstatistically analysis used Non-parametric methods have been developed to detect trends inrnhydro meteorological time series. In the SPEI-3 monthly series, a drying trend occurred only inrnMarch statically significant and SPEI-6 and SPEI-24 monthly series, a drying trend occurredrnfour month in February, March, April and June and the result is statistically significant in thernrepresentation .Therefore, the result of February up to June often drought occurrence in thisrnmonth represented and time series representing longer time scales a decreasing trend. Based onrnthis the researcher tried to recommend that carrying out capacity building training to thernworeda water experts is essential to ensure the appropriate implementation of waterrnmanagement and biodiversity, the woreda administration should create awareness to the peoplernto reduce or stop vegetation clearance using fire that affect the biodiversity of the area