CASCADE LOCKS, Ore. - Cascade Locks is investigating possible security changes after a recent security breach at a water reservoir.

It was the second breach at an Oregon water reservoir in recent weeks.

The city administrator told KATU News a risk assessment done in 2005 showed no need to increase security.

But now, officials say they are looking at possible changes, including adding an alarm system, after a breach at the Dry Creek reservoir.

Police said someone got past the locks and kicked the door open to the reservoir, possibly in a search for copper or other materials of value to sell.

 But the city says the suspect left without taking anything. Monitoring of the water quality is currently in effect.

In June, two people were ticketed after they were caught skinny-dipping in a Mount Tabor reservoir that was not being used at the time to supply Portland with water.

The city of Cascade Locks said all of their water supply tests showed no contamination from the security breach and the water is safe for normal consumption.
    
City leaders have also asked for federal help, to see if any additional security measures are needed.