The BVB chief is adamant that the reigning German champions will face a tough task to shake off Jurgen Klopp's men, who finished 19 points behind the Bavarians this season
Jurgen Klopp's men were beaten 2-0 after extra time in Saturday's DFB-Pokal final against the Bavarians, but Watzke feels Dortmund have become a force to be reckoned with again in recent years and will be Bayern's main rival in Germany for the foreseeable future.
"We will draw strength from this DFB-Pokal final loss and without wanting to make too many promises, it certainly won’t be the last final this club will be involved in against Bayern," Watzke told the official Dortmund website.
"They won’t easily be able to shake us off in the coming years.
"We finished second in the Bundesliga which means in the last four seasons we have finished either first or second. We were once again right up there with the best teams in Europe and have become a real force."
Dortmund ended the season trophyless following Saturday's defeat, yet Watzke feels they have still enjoyed a successful campaign.
"And we were in Saturday’s final so I do believe you have to say that we have had a very good season."