Largemouth bass are also naturally present in the lake.

There is a public boat ramp and fishing area on the northwest shore of the lake, but the lake is mostly surrounded by private property.

[2] King County has measured water quality in Morton Lake since 1996 (except for a gap between 2008 and 2014).

Measurements indicate generally high water quality, at borderline oligotrophic-mesotrophic levels.

[3] On November 11, 2019, a small, single-engine plane crashed into Lake Morton.