The bowl should be deep enough so that it allows you to clean the dishes without splashes. The standard depth is 8-inch to 9.5 inches. However, a 10-inch depth bowl is also available. Extra-depth means more space to stack. A deep bowl also reduces splashes. Consider an extra-deep sink if you have many pans and pots to fill to do your kitchen tasks. Additionally, you also have to consider the size of your utensils to decide how deep the bowl will fit perfectly to meet your needs. If you have to do nothing more than rinsing your utensils, you can go for a shallow sink.