A small guide on how to drain water. Whether you want to build an underwater base or you really dislike that particular pond, here's a small tips and tricks on draining water.
Large amounts of water -
/fill - doing |/fill X1 Y1 Z1 X2 Y2 Z2 minecraft:water 0 replace minecraft:air 1| will 'remove' all blocks between the coordinates provided. You can also use |/fill X1 Y1 Z1 X2 Y2 Z2 minecraft:water 0 hollow minecraft:glass| to replace all edges with glass. Again, minecraft:glass can be replaced with whatever you want. See Commands/fill on the minecraft forums for more details.
I am not particularly good at redstone but is a design that will fill any area with sand. In the video, it is draining an ocean monument, but the design can be used for many things.
A simpler design that can be used to clear long stretches of water is this
In survival, it is pain to remove water without commands or complex redstone. However, some tricks can help speed it up
- Depending on the depth of the water, sometimes the faster way to place the sand or gravel is to swim down to the bottom and hold space while placing them beneath you. If you have high depth strider and a smooth floor, you can simply walk around placing the blocks behind you.
Requirements: Riptide Trident (Preferred Unbreaking 3 and mending, Lots of food and/or a resistance beacon (preferably with regeneration), and a bucket. (Optional: Feather falling, double beacon (Resistance and regeneration, along with maybe swiftness).
(If you aim right with the riptide trident, you do not need feather falling/resistance/tons of food.) Recommended to have mending on trident and an ex farm nearby. Need tons upon tons of sand, though not as much as if you were going to fill the whole area.
This setup allows you to place sand in a checks board pattern, like this
Because buckets can empty water into water source blocks, you can simply look a/b 70 degrees down while holding use and the hole will automatically drain until you reach the bottom, where you launch yourself out with the trident (other methods are possible, but trident is the fastest and easiest.
This does not work at certain depths. At Riptide 3, straight up launches you 40 blocks.Try out how high you have to go and experiment with angles so you don't have too much fall damage.
The Lava Bucket -
Requirements - A lotta lava buckets (depending on the size you want to cover)
Lots of pickaxes (again, depending on the size and depth)
Few stacks of any solid block (Depends on size)
Works best if you have a smooth floor
Place non-flammable walls around your 'drainage' area and walkways on one axis every 3 blocks. Every 3 blocks, put some lava (would be handy to have a nether portal nearby.) Then, as the last lava bucket is placed, go under the stone produced by the lava and start the long journey of mining.
After perhaps a few years, you reach the bottom where the stone is right about you. Do Not mine any of the stone, instead start placing the blocks you want in the few blocks left behind by the lava. After you've done that, head to the side (if you were not already) and exit the chamber. Head back up to the walkways and remove that lava sources. After maybe 10 years, the lava will recede and your drained area is finished.
Just use dry sponges (wet sponge in a furnace). If too big for 1 sponge, then divide the area.
Large Amounts of lava:
Flying machines and sand/gravel only. If you're in the nether, watch out for blazes and ghasts.