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  Constant Geyser
Feature Type: Geyser
Geyser/Spring Type:

Basin
Norris Geyser Basin
Complex
Porcelain Basin

Constant is located just behind and to the right of Whirligig Geyser, near the boardwalk into Porcelain Basin and easily visible from the upper boardwalks that give overviews of the basin. One might think from its name that Constant is a perpetual spouter, but it's a true geyser, with brief (usually a single burst) but reasonably powerful (up to 20 feet or more) eruptions separated by intervals that are variable from year to year, ranging from a very few tens of minutes to "a few hours" (Bryan). In many but not all seasons, Constant usually has a pair of eruptions (sometimes even three to five) only a few minutes apart, followed by the longer interval. In other seasons there is only one eruption per long interval. Most geysertimes.com reports of closed intervals during 2017 to date have revealed intervals in the 20-25 minute range (see below). However, longer intervals have been observed.

Constant is one of the few features in Porcelain Basin that has lasted for many years. The basin is an intensely dynamic place, with geysers (sometimes powerful ones) that come and go on time scales of a year or less. Constant, similarly active Fireball Geyser, nearby Whirligig, and infrequent but spectacular Ledge Geyser are some of the few features of the basin that are persistent enough to have accepted names.

What to look for:
Constant's eruptions give little warning, but there is usually some bubbling and frothing or pulsation of the pool very shortly before the eruption starts. Be attentive, as the eruption is so short-lived that you may miss it if your attention wanders. The pool rises and falls slightly on (usually) a 20- to 25-minute cycle, and this can be seen from the boardwalk; look at the water level right around the edge of the pool. However, not all cycles lead to eruptions, which occur from a full pool if they occur at all.







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