The areas surrounding the creek were developed as Anchorage expanded east in the first half of the 20th century , although some portions were also designated as green spaces . In 1971 , as part of the reconstruction following the 1964 Alaska earthquake , existing parks were connected with other land , older plots and some new purchases , to create one of the oldest urban greenbelts in the country , connecting Russian Jack Springs to Cook Inlet . This included the area around the outlet of the creek which had subsided during the earthquake , which meant that it now became partly submerged at high tide . The decision was made to create a lake protected from the sea by a new embankment , to form the Westchester lagoon , with the remaining area being rehabilitated as parkland
1964 Alaska earthquake
1964 Alaska earthquake
Chester Creek (Alaska)