With terms like "river crest," "datum points," and "CFS" being thrown around, figuring out how high the water will rise in your crawl space and when can be difficult. Thankfully, Rita Lee ...

or a single datum point, often found in the corner of a design. In a circular shape, it would be around the edge or from the centre.

A datum (plural datums or data) is a reference point from which measurements are made. A datum (plural datums or data) is a reference point from which measurements are made. In surveying and ...