The report, however, did offer some hope.
The ministry increased the angler retention limits of Gerrard rainbow to five per day and bull trout to three per day in an effort to reduce the population.
Every rainbow or bull trout head submitted to various collection depots on the lake are entered into a monthly prize draw for $1,000 in gift certificates.
Spawning numbers have since declined to between 150-450 in recent years, with 250 counted in 2020.
Bull trout spawning populations suggest a declining population from 2017-2020.