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Care is needed to determine if a high-water mark is truly accurate.

Detailed Description

Find the high-water marks in these pictures

Here are a couple of pictures of Peachtree Creek in Atlanta, Georgia. The pictures were taken on the river bank next to Peachtree Creek a few days after high water occurred during a storm. USGS hydrologists visited the site to try to find out the peak river height during the storm. High-water marks are visible in both pictures, although a hydrologist would only regard one of the marks as being reliable.


Public Domain.