Guam Hydrologic Survey

Guam Public Law 24-247 & 24-161

The Northern Guam Lens Aquifer Tour 2025

Attend the tour, Register now!

This tour offers continuing education units (CEUs) for educators and professionals. 

Please note that seating capacity for this tour is limited to 30 participants on a first come, first served basis. 

The Northern Guam Lens Aquifer Tour takes you to four sites, each of which is an example of the four basic components of the Northern Guam Lens Aquifer. Before embarking on the fieldtrip to these sites, the tour begins with a virtual tour of the NGLA, which is a computer graphics 3D model of the hydrology of Guam. During the field trip experience, we observe and discuss the geological features that form the aquifer components and the hydrological properties that allow water to flow through. 

Contact

For more information, please contact PERSON from UOG’s Global Learning & Engagement (GLE) office at EMAIL or by calling PHONE NUMBER

Visit GLE’s website at uog.edu/gle/, or visit WERI’s website here, weri.uog.edu/.

Know Before You Go

Fieldtrip participants at the DPW Quarry from the past NGLA tours. At this stop, participants are required to wear hard hats and safety vests.
  1. Bottled water will be available.
  2. No restrooms will be available except at Stops 3 (Agana Shopping Center) and 5 (Mataguac Hill).
  3. There will be no hiking, but participants are advised to wear appropriate casual field clothes, headgear, and footwear.
  4. Be prepared for intense sunlight. Hats and sunscreen are advised. 
  5. In compliance to MSHA (Mine Safety & Health Administration), participants are required to wear hard hats, safety vests, pants, and closed-toe shoes (e.g., sneakers) at the quarry. In addition: 
    • Hard hats and safety vests will be provided on site.
    • Sunglasses are also advised at the quarry. 
  6. For the visit at Mataguac Hill, bugs spray/repellent is advised. 

Required Attire

Some sites require the following attire before entry. This is to comply with their safety measures. 

  • Closed-toe shoes (e.g., sneakers) 
  • Pants 

Recommended Items

These items are optional, but they are recommended if you’re sensitive. 

  • Sunglasses 
  • Hats 
  • Sunscreen/sun protection 
  • Bugs spray/repellent 
  • Umbrellas 

Required Attire

Some sites require the following attire before entry. This is to comply with their safety measures. 

  • Closed-toe shoes (e.g., sneakers) 
  • Pants 

Recommended Items

These items are optional, but they are recommended if you’re sensitive. 

  • Sunglasses 
  • Hats 
  • Sunscreen/sun protection 
  • Bugs spray/repellent 
  • Umbrellas 

The following items will be provided by WERI:

  • Hard hats 
  • Safety vets 
  • Lunch 
  • Water 
THe NGLA tour itinerary is available on Google Maps. Click on the image to view the tour routes and stopovers in detail.
Start

Participants meet at UOG LOCATION AND TIME for a virtual tour of the NGLA and departure

Stop 1

Channel 10, Mt. Alutom - The Floor of the Aquifer

Stop 1

Channel 10, Mt. Alutom – The Floor of the Aquifer

Stop 2

Agana Shopping Center - Break for lunch, restrooms

Stop 2

Agana Shopping Center – Break for lunch, restrooms

Stop 3

DPQ Quarry, Dededo - The Core of the Aquifer

Stop 3

DPQ Quarry, Dededo – The Core of the Aquifer

Stop 4

Mataguac Hill Peace Memorial, Yigo - The Plumbing of the Aquifer

Stop 4

Mataguac Hill Peace Memorial, Yigo – The Plumbing of the Aquifer

Stop 5

Guam Korean Pacific Presbyteran Church, Barrigada - The Roof of the Aquifer

Stop 5

Guam Korean Pacific Presbyteran Church, Barrigada – The Roof of the Aquifer

End

Participants return to the point of departure at UOG

End

Participants return to the point of departure at UOG

Preview of the NGLA Web MApp. Click on the image to view the interactive map.

Brochures, Infographics & Maps

All files are PDFs.

Click on a file below to view or download.

All files are PDFs.

Click on a file below to view or download. 

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