Geocaching at Rocky Reach

Take the D3 Tour

From March 1 to Nov. 16, geocaches are active at three Columbia River dams – Chief Joseph, Grand Coulee (and, of course, Rocky Reach). The dams are introducing the D3 Tour Geocache Challenge to help families discover the hidden treasures of hydropower.

Geocaching is similar to a treasure hunt, using GPS (global positioning system) devices and a set of GPS coordinates that lead to a “cache” or treasure box.

You can borrow a GPS unit, or use your GPS or smartphone, to follow coordinates to uncover caches filled with fun facts about the dam. If you find all the caches at Rocky Reach, you’ll get a stamp in a D3 passport and receive a prize. The caches are “activated” through

To complete the challenge and receive a special patch, you must fill your passport by finishing the geocache courses at all three dams, including Chief Joseph Dam near Bridgeport and Grand Coulee Dam near Coulee Dam, on the upper Columbia River in Washington state. You can visit the dams in any order.

Geocache challenge expands with FWEE Patch_Artwork

Are you ready for the next level in the Geocache Challenge? If so, click over to the Foundation for Water and Energy Education (FWEE) Hydrocache Challenge site for information about geocaches throughout the northwest.

D3 Tour wins national award

The D3 Tour Geocache Challenge, a high-tech treasure hunt offered at Rocky Reach, Chief Joseph and Grand Coulee dams, was honored in April 2013 by the National Hydro Association with an Outstanding Stewards of America’s Waters Award (OSAW) for Public Education. Learn more.


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For questions about the D3 Geocache Challenge or other happenings at Rocky Reach, call the Discovery Center at (509) 663-7522.


5000 State Hwy 97A
Wenatchee, WA 98801
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Rocky Reach Discovery Center, Rocky Reach Park, and the Museum of the Columbia are closed for the season and will reopen in the Spring of 2019. 

For information about upcoming events, group tours, weddings in our pergola, and reservation questions, please call (509) 663-7522.

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