From the 291㎢ land reclaimed by building 33.9km breakwater connecting Gunsan, Gogunsan Islands and Buan (April 2010), MAFRA developed 121.8㎢ (42% of total land area) into agricultural land
94.3㎢ of agricultural land, 8.8㎢ of Jamboree contest site, 9.3㎢ of ecological and environmental land, and 9.4㎢ of land for other purposes such as breakwaters and flood control bank
(Flood Control Bank) A bank (62.1 km) was built to divide Saemangeum Lake and the Agricultural Science Site and to protect reclaimed agricultural land.
(Agricultural Science Site, etc.) Complex, waterways and drainage, and roads are installed after construction and reclamation inside the flood control bank. A total 103.1㎢ (12 areas) are planned including 94.3㎢ of the agricultural science site and 8.8㎢ of Jamboree contest site through soil preparation and construction of irrigation ditch, drain way, and roads after dredging and reclaiming inside the flood control bank.
In 1991, the ‘Comprehensive Development Plan of Reclamation of Saemangeum’ came up to secure stable foundation for staple grains (100% for farmland)
In 2007, the 'Basic Plan for Internal Land Development in Saemangeum' was announced. (72% for farmland and 28% for complex industrial land)
In 2008, ‘Revision (draft) of the Basic Plan’ was announced to increase the proportion of the complex industrial land (30% for farmland and 70% for complex industrial land)
In 2010, the internal development project was implemented including the construction of the breakwater, flood control bank and the agricultural science site.
In 2011, the ‘Comprehensive Development Plan for Saemangeum’ was implemented.
In 2013, the 'Special Act on Promotion and Support for Saemangeum Project' was enacted and enforced, and the Saemangeum Development and Investment Agency was established.
In 2014, the basic plan (MP) for Saemangeum was confirmed.
In 2017, the MP was changed for 2021
(Building Flood Control Bank) Of the total 62.1㎞, construction of 54.2㎞ was completed and the remaining 7.9㎞ is underway. (87% will be completed by 2020)
(Building Agricultural Science Site) Of the total 94.3㎞, construction of 31.5㎞ was completed and the remaining 62.8㎞ is underway. (33% will be completed by 2020)