Analysis of the Operational Value Needs of the Rapak Drainage System in Samarinda City

This study aims to evaluate the operational needs and cost requirements for improving the drainage system along Jalan Rapak Dalam in Samarinda City, where frequent waterlogging and infrastructure damage occur due to inadequate drainage performance. Using a mixed-method approach, the research combines field surveys, hydrological data analysis, and stakeholder interviews to assess current conditions and calculate the budget needed for optimal system operation. The results reveal that an annual operational cost of Rp 262,300,000 is necessary to cover personnel incentives, equipment maintenance, and routine channel upkeep, while an additional Rp 1,056,970,651 is required for structural repairs and sediment management. These investments are critical to enhancing drainage efficiency, reducing flood risks, and ensuring long-term infrastructure sustainability. The findings provide actionable insights for local authorities in budget planning and maintenance prioritization, emphasizing the importance of proactive drainage management in flood-prone urban areas. Furthermore, this study contributes to broader discussions on sustainable urban water management by demonstrating the cost-benefit relationship between systematic maintenance and flood mitigation. Future research could expand on hydrodynamic modeling and climate-resilient drainage design to further optimize flood control strategies.