How Do I make Waterfalls?

Undead Scout Main

L1: Registered
Oct 2, 2019
1
0
Hey i have been trying to make a death pit and i would like to add a waterfall to it. I have searched for a tutorial but found nothing. I was wondering if anyone can help me create one or point me in the right direction. Thanks -Undead Scout
 

RevolutionTeam

L4: Comfortable Member
May 19, 2019
173
45
It... it is a particle. You just gotta find the particle on the Valve Developer Wiki.