Water Hazard:
Examples: lindamillergolf.blogspot.com/2008/06/ask-linda-71-red-and-yellow-staked.html 
lindamillergolf.blogspot.com/2016/02/ask-linda-1245-ball-flies-over-water.html

usga-rules.com/EdKit/WaterHazards/

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Ball Unplayable: 
Examples: lindamillergolf.blogspot.com/2018/02/ask-linda-1691-two-club-length-relief.html
http://usga-rules.com/EdKit/BallUnplayable/​


USGA GOLF RULES QUIZES: www.usga.org/RulesQuiz/rules_quizzes.html