Previous to Coach Koerner’s collegiate and national team coaching, he was the Boys Program Director for American River Water Polo Club and Head Coach at Rio Americano High School.  While at Rio Americano High School, the Raiders won five consecutive league titles, were three-time section finalists and won the CIF Division II Championship in 2010 during his final season.

Coach Koerner is excited to return to American River Water Polo Club where he helped bring the boys program to national prominence.  When he arrived at American River Water Polo Club in 2005, the boys program qualified one team for the National Junior Olympics.  Under his leadership, ARWPC went on to qualify as many as eight squads annually from 2007-2012 in every age group.  Coach Koerner’s teams placed in the top 10 nationally in numerous national tournaments including 6th place at 2012 US Club Championships, 6th place at 2012 California State Cup and 7th Place at 2012 Kap 7 Invitational.  His 18 and under team also finished 11th at the 2012 National Junior Olympics.

Coach Koerner lives in Sacramento with his wife Angela, son David, daughter Cora and their dog Rosa.  

Zac Koerner

Head of Men's Programs

Zac Koerner returns to American River after spending the previous four years as assistant coach of men’s and women’s water polo at University of the Pacific.  During his time at Pacific, the water polo programs produced 14 All-Americans, one NCAA Player of the Year, and twice won the Cutino Award for the top collegiate water polo athlete.   In addition, the men’s program was ranked #1 in the country on their way to the 2013 NCAA Championship game where they finished as NCAA runner-up losing to USC in sudden-death overtime.

In addition to coaching at UOP, Coach Koerner has spent the last four years coaching internationally for the United States Youth National Team.  Serving as an assistant coach, his teams have competed around the world in places like Acireale Sicily, Belgrade Serbia and Montreal Canada.  In 2013, he was the Head Coach of the United States Youth National Team at the Pan American Youth Championships, where he led a young squad to the Silver Medal.

 A Non-Profit
Water Polo Club

American River Water Polo Club

 Striving to instill discipline, teamwork, commitment and confidence
in our athletes.