River training is process involving construction of structures across or along a river. The most common types of these training structures are groins. They are mainly used for bank protection against erosion and for channel rehabilitation and maintenance. The present study aims for simulating and predicting the flow pattern around non-submerged single groin. A two-dimensional hydrodynamic model was developed. The model was physically verified by using experimental results of a proposed physical model. The verification was carried out to assure the validity of the developed mathematical model. Specific runs were conducted to achieve this verification. The model simulation was focused on the study of velocity in the longitudinal and transverse directions. In addition, the lengths of separating and reattachment points were also investigated. Two effective parameters were tested through twelve runs conducted by the model. The study cases represent several concluding remarks. For the reattachment length, it was found that all tested contraction ratios indicated resemble trend. The angle represented repelling groins had longer reattachment lengths if compared to the same angles of attaching ones. Furthermore, the straight groin gave the longest reattachment lengths. The study recommended that this work should be repeated using a series of spurs in order to be able to create a checklist for spurs for different functions.