Three Sisters Springs consists of three main spring vents in separate spring pools at the head of a short spring run.
- The east spring averages 13 ft deep with 2 adjoining conical depressions in sand and a spring pool up to 100 ft wide.
- The north vent is approximately 40 ft by 30 ft wide and 15 ft deep. It occupies a conical depression in sand.
- The west vent is approximately 8 ft deep and the pool is approximately 45 ft across.
Flow from the three springs converges in a centralized, shallow, sand-bottomed pool containing additional sand boils. The spring water is clear and light bluish.
Some algae are present on submerged logs within the spring system.