The Imha Dam is an embankment dam

Embankment dam

An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...

 on the Banbyeoncheon River, a tributary of the Nakdong River

Nakdong River

The Nakdong River is the longest river in South Korea, and passes through major cities such as Daegu and Busan.-Geography:...

, 14 km (9 mi) east of Andong

Andong

Andong is a city in Gyeongsangbuk-do Province, South Korea. It is the largest city in the northern part of the province with a population of 167,821 in October 2010. The Nakdong River flows through the city...

 in Gyeongsangbuk-do

Gyeongsangbuk-do

Gyeongsangbuk-do or shortly Gyeongbuk is a province in eastern South Korea. The province was formed in 1896 from the northern half of the former Gyeongsang province, remained a province of Korea until the country's division in 1945, then became part of South Korea.The Gyeongsangbuk-do Office is...

 province, South Korea. The purpose of the dam is flood control

Flood control

In communications, flood control is a feature of many communication protocols designed to prevent overwhelming of a destination receiver. Such controls can be implemented either in software or in hardware, and will often request that the message be resent after the receiver has finished...

, water supply and hydroelectric power generation. Construction on the dam began in 1987 and it was complete in 1991. The 73 m (240 ft) tall rock-fill, central earth-core dam creates a reservoir with a capacity of 595000000 cubic metre and supplies a 50 MW power station with water. It supplies water for both municipal and industrial uses to Gumi, Dagu, Masan

Masan

Masan was a formerly a municipal city in South Gyeongsang Province, South Korea. The city was situated on Masan Bay , approximately 35 km west of Busan. It was known for its textile industry, and it was the site of Hite Brewery's production facilities.During the control of the Mongolians, the...

, Changwon

Changwon

Changwon is a city in and the capital of Gyeongsangnam-do in South Korea. Changwon city is 8th most populous city in South Korea, with a 2010 established population of 1,089,039. It encompasses a land area of on southeastern of South Korea. The population of Southeastern part of Korea, that...

, Jinhae

Jinhae

Jinhae is a district in Changwon City, South Korea. This region is served by the Korean National Railroad, and is famous for its annual cherry blossom festival every spring....

, Woolsan, and Busan

Busan

Busan , formerly spelled Pusan is South Korea's second largest metropolis after Seoul, with a population of around 3.6 million. The Metropolitan area population is 4,399,515 as of 2010. It is the largest port city in South Korea and the fifth largest port in the world...

.