Evaluation of the Field Applicability of a Riverine Search Area Estimation Model for Missing Person Search in Water Rescue Operations

Water rescue operations have increased annually due to recent climate anomalies, prompting rescue personnel to seek rapid and accurate methods for locating missing persons in aquatic environments through analyses of past incidents and field-oriented training programs designed to enhance command capability and operational adaptability. Despite the deployment of substantial manpower and advanced equipment to reduce search time, systematic decision-support mechanisms for water rescue personnel remain limited. This study evaluates the field applicability of a riverine search area estimation model for missing person incidents during water rescue operations. Field experiments were conducted in the lower Geum River using GPS-based buoy-type drifting objects. Final positions were recorded at 10 min intervals to assess whether the objects remained within model-estimated search areas. Across 13 trials, a capture rate of 100% was achieved under all conditions, confirming the model’s stability and predictive accuracy. Additionally, a satisfaction survey of 36 rescue personnel yielded positive evaluations of field applicability and usability, supporting the model’s practical utility in water rescue operations.