A Critical Review of Spatial Distribution Flood Level in Gorontalo City

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.