Take a swim, feed those hungry steam turbines, dig a moat, or dig canals to connect bodies of water (useful for boat and ship mods).
##Additions:
*Waterfill - replace dirt with water
*Swimming - Players, vehicles, and biters can cross shallow water
##Balance:
*Waterfill can only be placed adjacent to existing bodies of water - no spawning water from nowhere
*Waterfill only produces shallow water, which biters can cross
*Water will slow down biters (and players)
*Minimum 3-tile width, since this can be used as a high-throughput water pipe for reactors
##Disclaimer
I did not create this mod, i just updated it to 0.17 for my personal use and wanted to make this available to others. The original creator is MostlyNumbers, the original mod here.