evidence: Photos of water at Sydney Harbor fort do not refute sea level rise CLAIM: Photos taken a century apart at Fort Denison in Australia’s Sydney Harbor are proof that climate change has not led to higher sea levels there or at other monuments near water. [...] One prominent example compares two photos of Fort Denison, a former Australian military site built on a small island in the mid-1800s. The water level at the shore beneath the fort appears to be roughly the same in both photos, though the post claims they were taken more than a century apart. Sea levels at Sydney Harbor have risen "approximately 0.0 cm over the past 140 years," the photo caption reads.