ANALYSIS OF WATER STORAGE CAPACITY AT TARAKAN CITY WATERSHED,
NORTH KALIMANTAN
Sudirman Sirait1*, Suhani1, Dwi Santoso1
1Program Studi Agroteknologi, Fakultas Pertanian Universitas Borneo Tarakan,
Kota Tarakan, Kalimantan Utara, Indonesia
Korespondensi : Alamat email ini dilindungi dari robot spam. Anda memerlukan Javascript yang aktif untuk melihatnya.
Diterima / Disetujui
ABSTRACT
The changes of water storage capacity in a watershed determine the amount of water in the ground to meet the water needs, especially agricultural activities in the Tarakan City area. The Plants will encounter growth disorders and decreased productivity if they have a lack of water. This study aims to analyze changes in water storage capacity based on water balance and land conversion in the Tarakan City area for the period 2005-2020. The research stages consist of analysis of land conversion, water balance analysis and analysis of water storage capacity. The results showed that during the 2005-2020 period the use of forest land in the watershed area of Tarakan City decreased by 3.06%, namely 30.76% in 2005 and by 27.70% in 2020. The changes of forest area caused an increase in runoff value of 59 .46 mm and a decrease in groundwater recharge value of 15.21 mm. The value of water storage capacity in the Tarakan City area during the 2005-2020 period showed a decrease of 7.57 mm, namely 130.35 mm in 2005 and 122.78 mm in 2020.
Key words : Groundwater recharge, land use, runoff, water storage capacity, watershed.
