Irrigation System
Irrigation System is a Side Quest in Everdream Valley.
Unlocking
Irrigation System is unlocked when the Drought sets in on the farm.
Tasks
*Locate the water pump.
*Find the turbine (electric motor is what this point really means, the turbine is the actual windmill on the farm by the pond).
*Get sprinklers.
*Get a garden hose.
*Get electrical wiring.
*Connect the parts of the irrigation system together.
Rewards
*Installs Irrigation System on Farm
*Merchant unlock: Turbine
*Unlock: Farm Dream
Guide
This is an optional quest, but is very helpful in automating watering your crops even after the Drought ends. Especially if you want to build a large farm. (And it is the precursor to the Treehouse quest.)
The first thing you will notice is that all of these items are available at the Merchant. However, his prices are ridiculous! you can do two things about this;
Option 1: Talk to Grandpa and the merchant to get the Side Quest Catch Butterflies For The Merchant to lower the Merchant's prices. They'll still be pretty pricey for this point in the game, though!
Option 2: Find all of the items for free around the map. Electrical Wiring & Garden Hose are the easiest items to find right around the farm and the cheapest items at the Merchant if you need more.
You can find the Water Pump in the abandoned building on the Western Island where you found the Goat and the Sad Alpaca.
You can find the Electric Motor in the abandoned building on the northside of the Northwest Island.
You can find 5 sprinklers in one of the abandoned buildings to the northeast of the goose village on the South Island.
Once you have all the parts from finding them for free or buying them, now you can place the irrigation system on your farm. Start by fixing the turbine by the pond with the electric motor. Now, place the water pump near the pond. Connect the Water Pump and the Turbine with the electrical cable.
Now, go place your Sprinklers wherever you like. Do note, they need at least one crop space (if you place it veeeeery carefully, but usually you'll need one entire plot (4 spaces)) and will water the blocks around them in a 2-space radius. Once those are placed, you can now connect the sprinklers to each other in a chain and the last sprinkler will need to be connected back to the water pump.
Once you've connected everything, the quest will complete. Additional turbines will then be available from the Merchant. Then you just need to sleep to advance to the next quest.