The Construction Of The Sepaku Semoi Dam Has More Than 88 Percent, The Impounding Process Begins In June

Head of the Kalimantan IV Samarinda River Basin Center, Harya Muldianto (ANTARA)

SAMARINDA - The development of infrastructure supporting the capital city of Nusantara (IKN), Sepaku Semoi Dam in North Penajam Paser Regency, East Kalimantan, has reached more than 88 percent. Water filling is targeted to start in June 2023. "This dam is projected to be able to supply raw water needs reaching 2,500 liters per second, with details of 2,000 liters for IKN and 500 liters for Balikpapan," said Head of the Kalimantan River Basin Center (BWSK) IV Samarinda Harya Muldianto in Samarinda, Antara, Monday, March 27. The Sepaku Semoi Dam was built through a multi-year contract scheme worth Rp556 billion, carried out by the implementing contractor PT Brantas Abipraya - PT Sacna - PT BRP (KSO), built with a capacity of 10.6 million m3 and an inundation area of 280 hectares. The dam, which is located in Tengin Baru Village, Sepaku District, is capable of reducing flooding by 55 percent and has a capacity of 10 million cubic meters with a dam length of 450 meters, while the type of dam is a homogeneous landslide. The initial plan for this dam to be built was to meet the raw water needs of residents of Sepaku District and residents of Balikpapan City, then this dam was designated as a National Strategic Project (PSN) through Presidential Regulation Number 109 of 2020, so as well as for supply needs at IKN. Harya continued, in addition to the ongoing Sepaku Semoi Dam, his party is also working on a number of other projects that are still related to the utilization of water resources, such as the Sepaku River Intake, the planned Lepek Stone Dam, including drainage work in the Central Government Core Area (KIPP). According to him, the Sepaku River Intake with a capacity of 3,000 liters per second, will be carried out from October 2021 to April 2023, designed with the concept of a motion building (obermeyer), has a width of 117.2 meters, and a height of 2.3 meters. He admitted that in January 2023 there was a delay in work at the Sepaku Semoi Dam, this happened because of the delay in stone material from Palu from Sulawesi in the September - November 2022 range, due to bad weather at sea so that the ship did not dare to sail. "Even if at that time the ship dared to sail, it still couldn't carry the material we ordered, because at that time they preferred to transport coal, apart from the price of coal transportation, it would be better not to damage the barge floor, while the stone we ordered was very hard which could potentially damage the barge floor, but it can all be overcome," said Harya.