Our Purpose
The purpose of CGWA is to advance the understanding of groundwater hydrology among its membership and the residents of Colorado.  CGWA organizes monthly speaker presentations, field trips, community volunteer opportunities, social/networking events and publishes a quarterly newsletter.  We are committed to facilitating the wise use of the State's groundwater resources by providing a forum to examine the scientific, technical and policy-making issues related to groundwater.

From its inception in 1981, CGWA has been a positive and proactive organization. Because of the voluntary efforts of its members, the Association has played an active role in shaping the use and protection of groundwater in Colorado. CGWA leverages the diverse areas of expertise of its members and expands the scope of the profession of groundwater hydrology often cooperating with other related organizations to sponsor conferences.

 

Board of Directors

 
 Past-President - Kelsey Haworth

Past-President - Kelsey Haworth

Kelsey has a Bachelor of Science in Watershed Science from Colorado State University and is a Staff Hydrologist with White Sands Water Engineers.  She has experience in substitute water supply plans, augmentation plans, change cases, water accounting, well rehabilitation, aquifer testing, and water quality sampling. 

 
 President - Betsy Semmens

President - Betsy Semmens

Betsy Semmens has 20 years of experience as a groundwater professional in Arizona and Colorado. She works for Golder Associates specializing in numerical modeling. Betsy is married and has two teenaged kids. In her free time she enjoys running, reading, and endlessly driving her kids all over town. 

 
 Vice President - Travis Brown

Vice President - Travis Brown

Travis Brown is a Project Hydrogeologist with Quantum Water & Environment who has spent his career thus far working on groundwater issues ranging from environmental site characterization and cleanup to geothermal exploration and water rights. He earned a Master of Science in Hydrology from the Colorado School of Mines in 2015 and a Bachelor of Arts in Geology from the College of Wooster, Ohio in 2010. He is currently working toward becoming certified as a Professional Geologist in Wyoming. In his spare time, Travis enjoys reading, fly fishing, backpacking, skiing, cooking, and learning to play the banjo.

 
 Treasurer - Janet Castle

Treasurer - Janet Castle

Janet is an Experienced Geoscientist/Executive Manager/Business Development/PG with a demonstrated history of working in the energy and environmental services industry. Multi-skilled in Environmental Remediation, Geophysics, Geology, Petrophysics, Log Analysis, 3-D Modeling, Frac Modeling, Core Analysis, Geochem, and Analytical Skills. Strong team player and professional with many years of sales, technical, presentations, and management experience on a regional, national and international level. PG, with education from Colorado School of Mines, University of Houston, and Fort Lewis.

 
 Secretary - Ashley Lennon

Secretary - Ashley Lennon

Ashley has a B.S. in Geology and Business Management from Colorado State University. She lived in Vail for 10 years where she worked with the Eagle River Watershed Council in community outreach and riparian remediation projects before moving to Evergreen with her husband and daughter. She works for the Colorado Division of Water Resources on the South Platte River Basin Team in the evaluation of well permits and supporting the public in matters of groundwater and well permitting.  Ashley enjoys spending time with her family in the mountains skiing, hiking and fishing. 

 
 Director - Andie Gehlhausen

Director - Andie Gehlhausen

Andie is a Senior Hydrogeologist at Golder Associates in Lakewood, Colorado with more than 14 years of technical experience managing projects both in the United States and internationally. As a hydrogeologist and geologist Andie has worked to support the power and mining industries with regulatory compliance, hydrogeological modeling and complex drilling programs. Andie lives in in Evergreen, Colorado with her family and looks forward to becoming more involved in Colorado's groundwater challenges.

 
 Director - Michael Smith

Director - Michael Smith

Michael is a hydrogeologist who spent most of his career at CDM Smith in Denver, where he focused on groundwater modeling, including working on a regional model of the South Platte alluvium for the Colorado Decision Support System. He is now retired, though doing occasional work as an intermittent employee. Mike has been a member of CGWA since 1981 and was on the founding board of directors. He has degrees in Geology from the University of Montana (BA) and Southern Illinois University (MS).