The Lagoon is fed by natural runoff and water drawn from the City's water system which enters the Lagoon through Ceperley Creek. Although not an officially designated waterfowl refuge, Lost Lagoon fills this important role. This is an excellent wildlife observation area. A special attraction is the presence of Great Blue Herons. Deciduous Border A broken border of deciduous trees, shrubs and vines circles the Lagoon.
Many songbird species find food and shelter amongst the tangle of branches and leaves.
A small island at the mouth of Ceperley Creek, sometimes referred to as, Swan Island, is separated from Lost Lagoon's south shore by a shallow, muddy, channel. Many species of birds, both waterfowl and songbirds, enjoy the protection of this sheltered area.