Flood is a natural phenomenon that is frequent and widespread all throughout the world, making it the most hazardous phenomenon of all natural hazards. With floods’ atrocious effects, many innovations and studies were conducted to minimize their catastrophic consequences. Government sectors have mandated people living in flood-prone areas to embark in purchasing flood insurance and to construct flood-resistant structures. Immense efforts to alleviate and redirect inevitable floods are recommended and tried in various engineering efforts. The prevention efforts against flood by analyzing its causes and assessing the drainage system of the flooded area have become the utmost concern of the researchers. This prompted them to assess the drainage system of the University of the Immaculate Conception (UIC) in Bonifacio Campus to identify the main reason of flooding. In order to achieve the objectives of the study, the following data such as peak runoff and discharge capacity, have been sourced out through direct fieldwork and they have been analyzed through the application of descriptive analysis, and hydrologic and hydraulic computations. Descriptive method, specifically case study was used to profile the drainage system and also determine the difference in surface elevations inside and within the perimeter the UIC Bonifacio Campus. Also included in the assessment were the environmental factors such as depth of rainfall, and the formation of sludge in a drainage system which affects the effective area of channels and the volume of flood. Problems, like the clogging of one exit point that caused alteration of the runoff flow, have been detected.