The Northern Guam Lens Aquifer Tour

Friday, May 2, 2025 | University of Guam, SBPA Room 129

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. 

What to Expect

Bottled water will be available. No restrooms will be available except at Stops 3 (Agana Shopping Center) and 5 (Mataguac Hill).

There will be no hiking, but participants are advised to wear appropriate casual field clothes, headgear, and footwear. Be prepared for intense sunlight. Hats and sunscreen are advised.

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. Hard hats and safety vests will be provided on site. Sunglasses are also advised at the quarry. 

For the visit at Mataguac Hill, bugs spray/repellent is advised. 

What to Wear

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

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

What is Provided

The following items will be provided by WERI:

  • Hard hats 
  • Safety vests  
  • Lunch
  • Water 

Tour Itinerary

Start – Participants meet at UOG’s SBPA Room 129 for the NGLA Virtual Tour and departure (See UOG campus map)

Stop 1 – Channel 10, Mt. Alutom (The Floor of the Aquifer

Stop 2 – Agana Shopping Center (Break for lunch, restrooms)

Stop 3 – DPW Quarry, Dededo (The Core of the Aquifer

Stop 4 – Mataguac Hill Peace Memorial Park, Yigo (The Plumbing of the Aquifer

Stop 5 – Guam Korean Pacific Presbyteran Church, Barrigada (The Roof of the Aquifer)

End – Participants return to the point of departure, UOG 

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