▁D ip on eg oro ▁War , ▁the ▁area ▁of ▁Gro b og an , ▁Pur wod adi , ▁Wi ros ari , ▁Mang or ▁(? ), ▁Dem ak , ▁K ud us , ▁lost ▁in ▁the ▁fire ▁of ▁war ▁against ▁the ▁Dutch ▁( S ag im un ▁MD , ▁ 1 9 6 0 : ▁ 3 2 , ▁ 3 3 1 - 3 3 2 ). ▁ ▁Geography ▁ ▁Gro b og an ▁is ▁a ▁flat ▁valley ▁lying ▁between ▁two ▁mountains , ▁Peg un ung an ▁K end eng ▁to ▁the ▁south ▁and ▁Peg un ung an ▁Kap ur ▁Ut ara ▁to ▁the ▁north . ▁Although ▁the ▁town ▁is ▁known ▁to ▁be ▁very ▁hot ▁during ▁the ▁dry ▁season , ▁Gro b og an ▁is ▁one ▁of ▁the ▁main ▁rice ▁produ cers ▁in ▁Central ▁Java , ▁which ▁mainly ▁supported ▁by ▁several ▁man - made ▁d ams , ▁such ▁as ▁B end ung an ▁Kl amb u , ▁B end ung an ▁Sed adi ▁and ▁B end ung an ▁K ed ung ▁Om bo . ▁The ▁construction ▁of ▁B end ung an ▁K ed ung ▁Om bo ▁was ▁a ▁source ▁of ▁national ▁debate ▁due ▁to ▁the ▁social ▁cost ▁of ▁this ▁gig antes que ▁project ▁supported ▁be ▁the ▁World ▁Bank . ▁The ▁two ▁main ▁rivers ▁are ▁K ali ▁L us i ▁( or ▁Pil ang ) ▁and ▁K ali ▁Ser ang . ▁During ▁the ▁ra iny ▁seasons , ▁the ▁two ▁rivers ▁cause ▁flo ods ▁which ▁often ▁dest ro ys ▁the ▁har v ests