Requires SMAPI and Content Patcher.

Installation:

Install the latest version of SMAPI
Install Content Patcher
Download Four Corners Expanded and unzip it into Stardew Valley/Mods
Run the game using SMAPI
Select Four Corners and enjoy.

You can change whether or not your farm has ponds through a config that will be generated after you launch the game using smapi with four corners expanded installed.
Simple change "Ponds" from "True" to "False"


Moving over from More Than Necessary? Follow these instructions for a smooth transition.

Navigate to %appdata%\StardewValley\Saves
Find the folder of the save file you're updating
Right click on the first file inside of the folder. It should be called [playername]_[numbers] and open with notepad
Ctrl + F and search for "200"
Change the 200 to a 5, save, and you're good to go.