bournda eec
bournda eec

Wallagoot lake

Wallagoot Lake is a wide relatively shallow lake that is listed as a nationally significant wetland. The lake encompasses a range of important estuarine habitats including saltmarsh and seagrass beds. The seagrass beds, comprised mostly of the Zostera and Rupia species, provide food, shelter and nursery areas for many of the lake’s inhabitants including prawns, shrimp and amphipods as well as a rich abundance of bivalve and other molluscs living in the sediments.

Wallagoot Lake is an ICOL (intermittently closing and opening lagoon). Conditions within the lake can change depending on whether the estuary mouth is open or closed. In recent years Wallagoot Lake has remained closed.

These conditions tend to favour some species more than others. Some fish species including Garfish, Dusky flathead, Hardy heads, Mullet and Flounder successfully breed in the lake despite long periods of mouth closure. Other species rely on incursions of marine water when the mouth is open to allow recruitment into the lake.

Numerous Jellyfish (harmless to humans) also thrive when the estuary mouth is closed feeding on phytoplankton and zooplankton in the clear shallow waters.

Wallagoot Lake - Estuary mouth closed (March 2006)                                 Wallagoot Lake Catchment

The Wallagoot Lake Catchment areaWallagoot Lake Estuary mouth close (March 2006)












 Black nudibranch Chromodoris nitida                                                          Mosiac jellyfish Catostylus mosaicA Mosiac Jellyfish                 
A Black Nudibranch