The lake is located approximately 18 km ( 11 mi ) west of Esperance .
The lake is makes up part of the 102 - hectare ( 252 - acre ) Lake Monginup Nature Reserve .
The lake is located approximately 18 km ( 11 mi ) west of Esperance and makes up part of the 102 - hectare ( 252 - acre ) Lake Monginup Nature Reserve .