The Spring Pond is a decoration.
It could be redeemed for 50 pieces of gold from the Pot of Gold. The spring pond was unlocked on March 12th as part of the St. Patrick's Day Event.
Spring Pond Glitch Edit
Upon placing the Spring Pond on the farm a glitch was triggered, it rendered all ducks and ugly ducklings that faced forward sitting or swimming in grass/snow. The glitch has since been corrected.