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The Gongola River is in northeastern Nigeria, the principal tributary of the Benue River. The upper course of the river as well as most of its tributaries are seasonal streams, but fill rapidly in August and September. The Gongola rises on the eastern slopes of the Jos Plateau and falls to the Gongola Basin, running northeasterly until Nafada. At one time, the Gongola continued from here in the northeast direction to Lake Chad. Today it turns south and then southeast until it joins the Hawal River, its main tributary. The Gongola then runs south to the Benue river, joining it opposite the town of Numan.〔(【引用サイトリンク】title=Gongola River )〕 The lower reaches of the river are impounded by the Dadin Kowa Dam near Gombe, and lower down by the Kiri Dam. After the Kiri dam was constructed, downstream flood peaks dropped from to , while flows in dryer seasons increased from to . The river downstream from the dam also narrowed and became less winding, with fewer separate channels. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Gongola River」の詳細全文を読む スポンサード リンク
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