Were do you get the hm waterfall in pokemon firered?

You get HM03 (Surf) in Pokemon FireRed by visiting the house on the left side of the Pokemon Center in Slateport City. Inside, you'll find a man who gives you the HM.

However, you'll need to obtain HM07 ( Waterfall) before you can use Surf to reach the location.

To get HM07, follow these steps:

1. Defeat the Slateport Gym: This will give you the badge you need to use Waterfall.

2. Travel to the north of Slateport City: This will lead you to a route with a waterfall and a cave entrance.

3. Enter the cave: This is the "Granite Cave", and you'll need to use the newly learned Waterfall HM to navigate the cave.

4. Reach the end of the cave: You'll find the HM07 (Waterfall) in a small clearing with a hidden path.

Once you have both HM03 (Surf) and HM07 (Waterfall), you can use them to explore new areas and reach hidden locations in the game!