TOPEKA, Kan. (AP) — Gov. Sam Brownback is promising to finish work on a 50-year water conservation plan for Kansas if he’s re-elected this fall.

The Republican governor also said Democratic challenger Paul Davis has no credibility on water issues because he showed no interest in the subject as a legislator.

Brownback held a news conference Wednesday on a boat ramp on the Kansas River to discuss water policy and protecting the state’s natural resources. It’s the last piece of his re-election campaign platform. His administration is already working on a 50-year water plan and expects to roll out pieces of it next year.

The governor says his administration already plans to issue $20 million in bonds for reservoir dredging.

Davis campaign spokesman Chris Pumpelly did not immediately return a message seeking comment.