Water leakage

When it rain the water runs off the windshield down into the cowl. The area where the water is suppose to drain has a little lip (like a cup that collects and runs water along the wall of the car). Instead of the water flowing off it in it pours out over this lip onto the engine. I know the cowl, but area below it that collects and run the rain water off I do not know its name. The area is located below the cowl and runs the rain water away from the engine through this part located on the wall of car.