Park Improvements At this time the City of Lake Forest is in either the design or construction process of making improvements to the following parks.  Click on the park name for more information: Tamarisk: City Council approved the Conceptual Design on 6-7-2011.  Completion is anticipated Summer of 2012. Rimgate: City Council approved the Conceptual Design on 6-7-2011.  Completion is anticipated Summer of 2012.