Heading to Hamilton Pool? Here are 5 things you need to know

Those of us who grew up in Austin can remember making spur-of-the-moment jaunts to Hamilton Pool Preserve, where the cool, blue-green waters offered instant relief on 100-degree days.

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Hamilton Pool Preserve is currently accepting reservations for as early as August and September. Kristin Finan/American-Statesman

But as you probably know, Hamilton Pool — a natural pool created thousands of years ago after the dome of an underground river collapsed due to erosion — has experienced excessive crowding of late and two years ago switched to a reservation system.

Reservations are required between March 1 and Oct. 31 and on weekends and official Travis County holidays during November and December. You can pick a morning or afternoon reservation (9 a.m. to 1 p.m. or 2 p.m. to 6 p.m.); each reservation includes one vehicle with no more than eight people.

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Hamilton Pool Preserve should be on every Texan’s bucket list. Kristin Finan/American-Statesman

Want to take a dip before summer ends? Here are 5 more things you need to know.

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Swimming is not always guaranteed at Hamilton Pool Preserve — it can vary based on bacteria levels in the water. Kristin Finan/American-Statesman

  1. Bring cash. Cost for a reservation including service fee is $11 and is paid online when you make your reservation. Make sure you bring cash to the park, too, because an additional $15 cash entrance fee is required on the day you visit.
  2. Wear tennis shoes. It’s advisable to wear tennis shoes because a steep and rocky quarter-mile hike is required to access the pool.
  3. Swimming is not guaranteed. Sometimes visitors are not allowed to swim due to high bacteria levels. Call the public information line for the current status of the preserve: 512-264-2740.
  4. Life vests are available but no lifeguard is on duty. No pets are allowed either.
  5. Some August and September dates are currently available. Weekdays in particular are opening up now that school is back in session. Click here to view available dates and make a reservation.