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Pacific Lamprey Series - Discovery Trail

Hidden : 2/23/2015
1.5 out of 5
2 out of 5

Size: Size: regular (regular)

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Geocache Description:

This cache, close to where Lincoln Creek enters the Chehalis River, is part of the Pacific Lamprey Geocaching Series, sponsored by the U.S. Fish & Wildlife Service (Lacey, WA). The series includes 6 mystery caches throughout the Chehalis River Basin. Solve the puzzles to get the cache locations, and find the six caches to complete the series.

The Pacific Lamprey Geocaching Series will teach you some interesting facts about the Chehalis River Basin and the Pacific Lamprey found there. The Pacific Lamprey (Entosphenus tridentatus), relatively unknown and often underappreciated, is a declining species of fish that is a critical contributor to the fresh and saltwater ecosystems of the Pacific Northwest. These fish are also an important food and cultural resource for many Native American tribes. Threats to Pacific Lamprey include dams, stream degradation, poor water quality, and impacts of climate change. The U.S. Fish and Wildlife Service is working to restore Pacific Lamprey populations in collaboration with Native American tribes and other federal, state, and local agencies.

While there were pathtags for the first 75 cachers to complete the series, the real reward is learning more about the Pacific Lamprey, the Chehalis Basin, and the conservation entities working to restore these and other fish and wildlife populations. We hope that through this series you will develop a greater understanding of and appreciation for these “forgotten fish.”

What is the Pacific Lamprey Geocaching Series? - It is a series of six mystery caches located throughout the Chehalis River Basin. Solve the puzzles for these 6 caches, and then enjoy finding the cache at each location.

How to solve the puzzle and find the cache:

  • There are two questions below, one for North coordinates and one for West coordinates.
  • Use the provided web links to get the correct answer for each question.
  • For the actual cache location use the coordinates given behind the correct answers.
  • Find the cache using these coordinates and the hint.
  • Park at the coordinates given below as a waypoint.

North coordinates question: Adult Pacific Lamprey are thought to overwinter and remain in fresh water habitat for approximately one year before spawning (reproducing). During this time, an adult lamprey will: (for answer, visit link)

  1. Continue feeding to grow in size. = N 46° 45.268
  2. Continue feeding to maintain their size. = N 46° 45.949
  3. Cease feeding and shrink in size up to 20%. = N 46° 45.318
  4. Cease feeding and shrink in size up to 40%. = N 46° 45.109

West coordinates question: The Chehalis Basin Education Consortium works collaboratively with educational entities and many other partners to support 16 school districts within the Chehalis Basin with curriculum and educational activities. The Chehalis watershed is the ______ largest in Washington State. (for answer, visit link)

  1. 1st = W 123° 01.048
  2. 2nd = W 123° 01.667
  3. 3rd = W 123° 01.422
  4. 4th = W 123° 01.662

For a unique look at spawning Pacific Lamprey, please watch this video link.

Additional Hints (Decrypt)

haqre ybt oruvaq gjb ynetr gerrf

Decryption Key


(letter above equals below, and vice versa)



92 Logged Visits

Found it 84     Didn't find it 2     Write note 1     Archive 1     Temporarily Disable Listing 1     Publish Listing 1     Needs Maintenance 2     

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**Warning! Spoilers may be included in the descriptions or links.

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Coordinates are in the WGS84 datum

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