"Lava from the Kilauea eruption has boiled away Hawaii's largest freshwater lake in just a matter of hours.
In a statement released on June 2, the U.S. Geological Survey explained that lava from the eruption's fissure 8 entered Green Lake and boiled its water away, sending a white plume high into the sky.
USGS tweeted that lava entered Green Lake at 10 AM local time. By 3PM, Hawaii County Fire Department confirmed that the lake had filled and that its water had evaporated." foxnews.com/science/2018/06/12/hawaii-volcano-kilauea-lava-boiled-away-big-islands-largest-freshwater-lake.html
(Score: 2) by AthanasiusKircher on Wednesday June 13 2018, @09:09PM
Found this [bishopmuseum.org] survey of Hawaiian lakes, which includes a detailed map of the lake with depth indicated on page 6, indicating maximum depth between 6 and 7 meters (about 20 feet).
Perhaps all the "200 feet deep" sources might be fake news.