PART 1
While not specifically for any one RPG you can take the technique and adapt it easily enough, especially if you are using a printed out water tile sheet I recently posted on here and my site. I think i priced out my tiles to be about $1.50 for a 5x5 1/4 thick tile or $2.00 if you count the 5 min epoxy resin I use for making the wavy pattern on the top of the tiles (can't seem to find it in bulk online and the double sided syringes are about $5.00 bucks a pop, but you get multiple uses on each tile, sealing and then wavy pattern by "painting" the resin on) vs the dwarven forge water tiles which are 15.00 for singles or 12.00ish in a set which those are 4x4.
More or less this technique will allow you to create any size you want really and any type of water too, sewer, underground river, deep oceanic water tiles, etc.
this first video is just an overview and the actual instructions will be posted in the next few posts. I hope you'll check it out and be inspired to make yer own!
Enjoy! and happy roleplaying!
-david
d4d6d8d10d12d20 - My Game Blog
ps: I'll post the additional videos and posts here in the same thread rather than make a new one each time so you'll have them all in one space well besides my site of course