Jacob's Well is the headwaters of Cypress Creek, which flows through Blue Hole Regional Park and feeds into the Blanco River.
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About Jacob's WellThe settlers didn't dive into it, of course, but treated it instead as a drinking fountain and later used it to power a saw mill. They named it Jacob's Well because of its biblical magnificence. Since the well was discovered, at least 4,500 feet of it has been explored.
For the second year in a row, the iconic spring-fed swimming hole has stopped flowing, the consequence of drought and overpumping. It was a scorching day in July 2022 when I last peered into Jacob's Well.
Catfish, crayfish, eel, perch, and blind salamanders live at the bottom of Jacob's Well. Closer to the mouth of the spring, you will find turtles, aquatic insects, and crustaceans. People don't seem to have animal problems in Jacob's Well, but you may want to steer clear of the Moray eel.
Jacob's Well, which is actually a spring that is usually filled with 68 degree, crystal clear water, has been closed since June 2022. Long-term drought is contributing to Jacob's Well drying up, but so is increased groundwater pumping to “accomodate rapid population growth,” according to The Watershed Association.
As of June 29, 2022, swimming will not be allowed at Jacob's Well Natural Area (JWNA) for the foreseeable future. The threat of high bacteria levels, other pollutants and poor visibility conditions are unsafe for swimming.
Temperature of the water in Jacob's Well remains a near-constant 68°F and visibility is typically excellent. The spring provides habitat to numerous species of fish (principally sunfish and perch); turtles; aquatic insects; crustaceans; and, most notably, the cave-adapted Fern Bank salamander (Eurycea pterophilia).