The main purpose of culvert construction is to allow the rainfall and flash floodwater to flow smoothly to not get traffic hindered. In addition, culverts are one of the common structures used to protect roads against flood hazards. Wadi Ahin is selected to evaluate the validity of all culvert points along the streams in the Wadi. QGIS is a software that enables users to analyse spatial and geographic data. So, this software is used to assess the culvert locations to determine the exact locations of these culverts and if other culverts are needed along this Wadi to protect all main roads. As a result, there are 171 intersections. Some intersections between streams and roads are not covered with culverts which affect the traffic on rainy days.