Found this info for you, but nothing about current water levels. Maybe you can call ODFW?
LEABURG LAKE: trout
Leaburg Lake will be stocked this week with 1,400 rainbow trout, including 200 larger fish. Only adipose fin-clipped trout may be retained; all wild trout must be released unharmed. Leaburg Lake will be stocked weekly through July, and then every other week through Labor Day. This waterbody also benefits from upriver stockings. Use of bait is allowed during trout season (through October).
EWEB will initiate weekday dam closures across Leaburg Dam from 8 am-12 pm and 1 pm to 4 pm beginning the week of June 29.