■ The source of water used in Iwate Prefecture ■ Classification of the earth's water ■ Water resources in the world and Japan ■ Amount of water supply for Iwate Prefecture ■ Classification of water for use ■ Incline and width of the Kitakami River ■ Incline of the major rivers of the world ■ Average temperature for each area ■ Major typhoons that passed through Tohoku ■ A graph showing annual precipitation (from 1953 to 1983) of Honjo, Akita and Kamaishi, Iwate ■ Record of recent major floods in Iwate Prefecture ■ Number of accidents that make rivers dirty

■Record of recent major floods in Iwate Prefecture (researched by the Ministry of Construction) 　 Main cause of flood Typhoon Katherine (September 1947) Typhoon Ilene (September 1948) Typhoon Number 15 (August 1981) Typhoon Number 19 (September 1990) Stationary front / Typhoon Number 4 (end of August 1998) Date Death toll 109 393 4 1 1 Missing 103 316 - - - Victims 21,725 180,117 15,273 1,251 1 Houses washed away 1,900 1,379 - - - Houses completely destroyed 1,935 1,045 16 - - Houses partially destroyed 3,351 1,379 81 4 1 Houses inundated above the floor level 26,126 16,019 946 42 119 Houses inundated below the floor level 11,742 12,953 1,425 304 364 Fields flooded 38,877ha 22,248ha 1,306ha 4,489ha 2,822ha Fields washed away 3,277ha 6,957ha - - - Average precipitation for two days 183mm 148mm 148mm 127mm 107mm Highest water level around Kozenji 27.46m 25.46m 23.08m 21.59m 21.71m 　 ※The numbers for flood victims September 1947 and flooded fields August 1981 are for Ichinoseki →Back ■Number of accidents that make rivers dirty (Researched by the Tohoku Construction Bureau of the Ministry of Construction) →Back 　 　 ←Back to previous page

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