Become a Junior Ranger

If you're between ages 6–12, you can become a Junior Ranger at Colorado River State Historic Park! Pledge to do your part to help preserve the beauty of the park for everyone to enjoy!

On this page, you can download a Junior Ranger activity for this park that you can complete on your own. It's just one of the fun activities you can do to become a Junior Ranger. After you complete it, bring it with you to the park and you're on your way to becoming a Junior Ranger.

When you visit the park ask for a full Junior Ranger booklet at the Visitor Center, Ranger Station or office. Complete the activities during your visit and then bring it to a Park Ranger for review. When a Park Ranger approves your work you'll be asked to take the Junior Ranger Pledge and get sworn in as our newest Junior Ranger. You'll also be given a Junior Ranger Button. We hope to see you at the park!

Activity Sheet Summary

Knowing the Code: Before our modern day internet or even phones, people communicated using the telegraph. The telegraph allowed people to communicate over long distances using beeping sounds that traveled through telegraph wires, just as sound travels through our telephone wires today. Joesph Henry invented the telegraph and Samuel Morse created the language of short and long beeps to represent letters and numbers.

The first military telegraph in Arizona was located here on the grounds of the old Yuma Quartermaster’s Depot. Use the Morse Code below to discover what was on the Quartermaster’s supply order list.

Download 1-Page Activity Sheet 

Pledge & Button

Junior Ranger Pledge: “As an Arizona State Parks Junior Ranger, I pledge to help the park rangers protect and preserve habitat, wildlife, and help keep the park clean and safe for visitors and wildlife.”

Remember, you can become a Junior Ranger at nearly all Arizona State Parks. So explore our website and visit the FOR KIDS page for each park for more activities.

Junior Ranger Button: Show everyone that you're a Junior Ranger! After you complete your activities and take the Junior Ranger Pledge you'll receive a Junior Ranger Button. You can pin it to your pack, put it on a bulletin board, or proudly wear it. Check out the button for this park in the picture.

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