San Juan Basin
Archaeological Society

Chapter of the Colorado
Archaeological Society
Lewis Mill

The San Juan Basin Archaeological Society... exploring, learning about, and preserving
archaeological, cultural, and historical resources in the Four Corners region since 1979.


About us


Field Trip and Activity Schedule



Reading List

John W. Sanders Internship Fund

Links and Volunteer Opportunities

PAAC Program

Field Trip Archives

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Contact us

Next SJBAS Meeting

Wednesday, May 9th 

7:00 p.m. at the Center of Southwest Studies

The next SJBAS meeting will be held on Wednesday, May 9th, at 7:00 p.m. in the Lyceum at the Center of Southwest Studies at Fort Lewis College. After a brief business meeting, Ken Wright will present: “The Inca Road System, a World Heritage Site." A social will be held at 6:30 p.m. in the CSWS foyer.

Ken Wright is the founder of Wright Water Engineers, Inc. He serves as Chief Financial Officer and Principal Engineer. His specialties include hydrology, water rights, water supply, groundwater, flood control and drainage design. Ken and his wife, Ruth, were honored with a Joint Honorary Doctor of Science Degree from the University of Wisconsin in 2011. Ken has also received the Order of Merit for Distinguished Service to the Republic of Peru, several honorary degrees and professorships and an American Society of Civil Engineers (ASCE) Distinguished Membership for his direction of paleohydrologic research at Mesa Verde National Park and at the Peruvian archaeological sites of Machu Picchu, Tipon, Moray and Ollantaytambo.

Through our non-profit organization, Wright Paleohydrological Institute (WPI), we have studied the water resources management and infrastructure design practices of several ancient civilizations including the Inca, the Ancestral Pueblo people and the Romans. We have found that many of the ancient civil engineers designed for sustainability as well as aesthetics. Two decades of field studies by WPI revealed that some ancient engineers possessed an uncanny ability to design structures that endure. This is evident in the vast amount of prehistoric construction that still exists for us to study and admire. The crux of these remarkable skills, superb drainage and structural and foundation design, existed in many cases in the absence of a written language, use of the wheel, or the availability of iron or steel. - K. Wright

SJBAS Quick References

SJBAS field trip schedule - Field Trips

SJBAS guide - Quick Reference Guide

SJBAS brochure - Brochure 2018

SJBAS newsletter - Moki Messenger - April 2018

Fort Lewis College

Life-Long Learning lecture series - Winter-Spring 2018 schedule

To submit material for the Moki and this website, please email it to

This site was last edited on April 12, 2018.


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