"That is encouraging that revenue is not falling as severely as originally predicted, but it's still too early to know whether it's going to be a sustained trend or just the three months," said Oregon Lottery Director Barry Pack in a statement quoted by The Portland Tribune website.
Since the new casino opened April 24, state lottery revenues are up 2.6 percent, or nearly $2.7 million, from this time last year.
Revenue growth has declined in places near the Washington state line, including Multnomah County by 3 percent, Rainier by 6 percent and the Sandy Boulevard/Interstate 205/Interstate 84 area by 6 percent and Interstate 84 East by 3 percent.