A cocktail of treacherous swells, hurricane surf, and unpredictable sneaker waves battered the Southern California coastline last month, triggering thousands of unprecedented rescues.

From the viral Santa Cruz rescue where 16-year-old Ryder Williams saved the life of 10-year-old Nathaniel Rai who was close to drowning in powerful waves, to Los Angeles lifeguards assisting almost 2000 swimmers in one weekend, these rescues were a brutal reminder of the ocean’s unforgiving power.

The California Post has analyzed rescue numbers, reports of dangerous incidents and weather conditions over the July period to determine which counties have the most…

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