United States Lifesaving Association (USLA) participated in the earlier effort to create standards for the discipline that its president, Chris Brewster, called back-country, experiential group leaders (see attached position statement). 

Related point:

USLA annually polls its chapters for the number of rescues, drownings, and other statistical information reported by lifeguard agencies.

This compilation is not a comprehensive list of all statistics generated by all beach lifeguard agencies, but the statistics of most major agencies are presented as public information on USLAs Website at usla.org/Statistics/public.asp.