 The Adams River run occurs every year , but every fourth year ( called a " dominant " year ) , the numbers are much higher . 2014 was the most recent dominant run . According to Canada 's Department of Fisheries and Oceans , the Fraser River sockeye run of 2010 was the largest since 1913 , numbering an estimated 34 million fish . At least 3 @,@ 866 @,@ 000 of these fish returned to the Adams River to spawn . There is no clear consensus as to why the Adams stock has rebounded so remarkably ( 1991 saw an estimated return of 718 fish ) . In the Globe and Mail , Simon Fraser University biologist John Reynolds said “ [ predicting salmon numbers ] is massively complex , even for a scientist . ” 
 The Adams River run <a href='uninflect' title='1'><mark>occurs</mark></a> every year , but every fourth year ( called a " dominant " year ) , the numbers are much higher . 2014 was the most recent dominant run . According to Canada <a href='null_genetive' title='2'><mark>'s</mark></a>Department of Fisheries and Oceans , the Fraser River sockeye run of 2010 was the largest since 1913 , numbering an estimated 34 million fish . At least 3 @,@ 866 @,@ 000 of these fish returned to the Adams River to spawn . <a href='dey_it' title='3'><mark>There</mark></a> is no clear consensus as to why the Adams stock <a href='been_done' title='4'><mark>has</mark></a> rebounded so remarkably ( 1991 saw an estimated return of 718 fish ) . In the Globe and Mail , Simon Fraser University biologist John Reynolds said “ [ predicting salmon numbers ] is massively complex , even for a scientist . ” 
Da Adams River run occur every year , but every fourth year ( called a " dominant " year ) , the numbers are much higher . 2014 was tdamost recent dominant run . According to Canada  Department of Fisheries and Oceans , thdaraser River sockeye run of 2010 was thedargest since 1913 , numbering an estimated 34 million fish . At least 3 @,@ 866 @,@ 000 of these fish returned to the Adams River to spawn . It ain't no clear consensus as to y the Adams stock done rebounded soo remarkably ( 1991 saw an estimated return of 718 fish ) . In the Globe and Mail , Simon Fraser University biologist John Reynolds said “ [ predicting salmon numbers ] is massively complex , even for a scientist . ”