大多數地牢的書架上藏有多個水矢。儘管它在物品欄 有一個紅色的外表, 水矢總是一本藍色的書，上面有黃色的帶子。由於頻繁的敵人攻擊，在地牢中進行仔細的目視檢查並不總是實用的，所以下面的任何方法也可以用來定位水矢；
- 右鍵點擊所有看到的書。 唯一一本從右鍵單擊中掉下來的書是水矢, 因為普通的書需要 鎬 釋放它們 (儘管鎬也會釋放水矢).
- It is not explicitly required to defeat 骷髏王 to obtain a Water Bolt, as platforms with books can spawn above level 0, sometimes even in the room just past the door into the Dungeon. These can be safely retrieved without causing either 地牢守衛s or unique Dungeon enemies to spawn. As the Water Bolt remains a powerful weapon up until 困難模式, it can be advantageous to check the Dungeon when starting a new world.
- Of course, this does not mean Water Bolts will always spawn above Dungeon Guardians, take caution.
- The durability of the Water Bolt projectile, combined with its ability to ricochet and hit multiple foes, makes it very suitable for fighting groups of enemies, especially in flat valleys and straight passageways. It also has a low enough velocity for it to hit the same enemy more than once even without ricocheting.
- Because of their long range and ricochet, Water Bolt projectiles can be used to detect 漂浮島s by firing upwards and waiting for the projectile to bounce off and return. Their low speed makes this tedious, however.
- The Water Bolt combined with properly closed arena is very effective way to fight many pre-Hardmode Boss. For example: fighting 世界吞噬怪 or 克蘇魯之腦 gets easy, because single Water Bolt projectile can hit multiple parts multiple times. Same goes for other bosses, although more arena optimization is needed.
- In pre-release footage of the game, both the placed and held Water Bolt sprites were blue. The held Water Bolt sprites were later changed to red, without altering the placed Water Bolt's coloration.
- Some 書架 sprites contain Water Bolt, but can't be looted from.
- 22.214.171.124：Damage increased from 17 to 19.
- Projectile sprite changed.
- Base mana cost reduced from 14 to 10.
- Light effect changed
- 1.1：Sell price added.
- Makes a new sound when used.
- Damage increased from 15 to 17.
- 魔力 to cast reduced from 20 to 14.