Has this ever happened to you before?  You fix yourself a tall glass of iced coffee and by the time you reach the bottom your drink seems more like water with a slight coffee taste. 

To help alleviate this issue you can use coffee cubes to chill your iced coffee.

Coffee cubes are what they sound like- ice cubes made out of coffee.   To create coffee cubes use left over brewed coffee and pour into an ice cube tray and freeze.  Once frozen these coffee cubes can be added to iced coffee and will not dilute the delicious coffee flavor.