My car had been running hot because of a leak that had not been determined where it was coming from, so I was constantly pouring more water and coolant in it. While driving on the interstate the temperature light flashed red, but I had no water or coolant in the car so I keep driving to make it to a gas station. Asi turned into the gas station the car killed and would start. I thought I needed a battery jump because of the way that it killed but not the case. I checked the oil and it seem fine didnt look milky. But the tank that holds the water ( dont know much about cars)that keeps it cool was empty. As I pour water in it came straight out the bottom of the car. My dad says it looks like the water pump, but he's no mechanic.......please help what can be the issue?