Crest (hydrology) From Wikipedia the free encyclopedia This article does not cite any sources. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Crest" hydrology – news · newspapers · books · scholar · JSTOR (September 2018) (Learn how and when to remove this message) In hydrology, crest is the highest level above a certain point (the datum point, or reference point) that a river will reach in a certain amount of time. This term is usually limited to a flooding event and from ground level. This article about geography terminology is a stub. You can help Wikipedia by expanding it.vte This hydrology article is a stub. You can help Wikipedia by expanding it.vte