Authors : Dr. Ir. Arqam Laya, M. T.

Volume/Issue : Volume 10 - 2025, Issue 12 - December

Google Scholar : https://tinyurl.com/p4xzck78

Scribd : https://tinyurl.com/pp4pyk4k

DOI : https://doi.org/10.38124/ijisrt/25dec755

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Abstract : The purpose of this study is to determine the condition of flood inundation levels that occur in Gorontalo City through a spatial grit-based hydrogemorphology study approach. The analysis technique uses a land unit approach as a mapping unit. Based on the results of the study, it was concluded that the area of Gorontalo City, (1) which is potentially affected by flooding is 965.83 Ha with a distribution pattern in the residential area of 450.19 Ha, a mixed garden area of 221.20 Ha, a shopping area of 185.29 Ha, and in the highway area of 70.09 Ha; (2) the height of the inundation with class G1 (0–25 cm) covering an area of 5950.46 Ha, for class G2 (25–50 cm) covering an area of 162.30 Ha, class G3 (50–75 cm) covering an area of 113.23 Ha, class G4 (75–100 cm) covering an area of 177.58 Ha, and class G5 (more than 100 cm) 252.46 Ha; and (3) the duration of the inundation, except for the sub-districts of Dembe I, Lekobalo and Pilolodaa where the duration was more than 30 days, in other areas the duration of the flood was around 10–24 hours.

Keywords : Water Level, Flood, Gorontalo City.

References :

1. Asdak, C., 2007, Hydrology and Watershed Management, Gadjah Mada Press, Yogyakarta.
2. Department of Agriculture, 1981, Decree of the Minister of Agriculture of the Republic of Indonesia No. 837/Kpts/Um/11/1980 and No. 683/Kpts/Um/8/1981 concerning Criteria and Procedures for Determining Protected Forests and Production Forests.
3. Public Works Department, 1987, Standard Method for Calculating Flood Discharge, Public Works Department, LPMB Foundation, Bandung.
4. Lihawa, F., 2009, The Influence of Watershed Environment and Land Use on Sediment in the Alo-Pohu Watershed, Gorontalo Province, Dissertation, Gadjah Mada, Yogyakarta.