The minimum recommended depth of water under a 1 meter board (1 meter high) is

The minimum recommended depth of water under a 1-meter board is determined by safety standards to prevent risks associated with jumping or diving into the water. In general, for a vertical height of 1 meter (approximately 3.3 feet), the recommended minimum water depth is often deemed to be approximately 10 feet. This depth helps ensure that there is sufficient water to safely accommodate a person who may be entering the water at that height, reducing the likelihood of injury upon impact.

Choosing a water depth of 10 feet allows for a safer buffer zone, compensating for factors like the angle of entry, momentum, and variations in body size. This guideline is rooted in best practices designed by various safety organizations and industry standards, aiming to promote safety in recreational water environments.