Set among a village green atmosphere of 200 elm trees, the chapel is 12km east or Uralla in New England, New South Wales.
As the rain-swollen stream was passing Gostwyck on its flow to Dangar's Falls, it left a calling card at the Chapel.
Stone walls surrounding the chapel were originally built for protection against flooding and have often had the added protection of sandbags.
Over the years, when floods were imminent, contents were removed to nearby storage.
During the recent flood, pews were dampened with water, and water-damaged carpet has since been removed.
Major floods of the 1950s rose higher than the walls and caused damage to furnishings and
an Anglican church service is scheduled for Gostwyck Chapel on the first Sunday of each month.
Because of flood damage, the December 4 service was cancelled.
At this stage it is not known if the service due to be held on New Year's Day will proceed.
In the surrounding vicinity, the 200 elm trees were planted in the early 1920s. The iconic ivy-covered chapel is popular among photographers, particularly in autumn.