TAGD Officers

President – Dirk Aaron

Dirk Aaron has been the General Manager of the Clearwater Underground Water Conservation District since 2011. Prior to becoming the district General Manager, Dirk worked as a County Extension Agent for the Texas AgriLife Extension Service for over 30 years. He served in multiple counties across Texas in the areas of production agriculture and irrigation efficiency, beef cattle production, swine production, and horticulture and economic development. During his first 20 years of employment, he worked directly with the agricultural industry in the Texas High Plains to implement irrigation efficiency with new technology and also worked directly with the groundwater management teams to implement those technologies. Dirk was recognized with the Agency’s Superior Service Award three times during his career. Dirk received his Bachelor Degree from Texas A&M University in 1981 and completed his Master of Science Degree in 1991 from Texas Tech University. He has been married for 33 years to Cindy and has two sons.


Vice President – Amber Blount

Amber began her work with Sandy Land UWCD (SLUWCD) in 2007 as the office secretary.  She quickly advanced to oversee well permitting and water quality services for the District.  While continuing to act in that capacity, she served as Education & Outreach Coordinator for the multi-groundwater district education cooperative before being named SLUWCD District Manager in 2015. Amber serves as the District’s representative to several affiliations which include, Texas Alliance of Groundwater Districts, Groundwater Management Area 2, and Texas Water Conservation Association. Amber grew up south of Dallas, obtained her Bachelor of Science degree from Tarleton State University in Stephenville, but now calls West Texas home.    Amber is married to Tanner and the mother to three boys- Helee, Cross & Krew.  Her family resides in Yoakum County, where they own and operate their family business, raising show pigs and cattle on their property west of Plains.


Treasurer – Zach Holland
Zach Holland is the General Manager for the Bluebonnet Groundwater Conservation District, serving Austin, Grimes, Walker, & Waller Counties. Zach is originally from Mertzon, Texas and has worked with the district for nearly four years. Zach’s love of water management led him to Texas A&M University, where he earned a Bachelor of Science degree in Animal Science and Business (2008) and then a Masters of Water Management & Hydrological Sciences (2010). His graduate research focused on a Carrizo-Wilcox Study ordered by Senator Ogden and highlighted the benefits and good works of groundwater conservation districts. Through that project, Zach was able to reach out to many districts and gain a greater understanding of groundwater management. While finishing up his graduate work, Zach started working as a permitting assistant at Bluebonnet GCD under then-general manager Lloyd Behm. When Lloyd retired from the District in 2010, Zach took over as general manager.


Secretary Pro Tem – Greg Sengelmann
Gonzales County Underground Water Conservation District

Mr. Sengelmann graduated from the University of Texas at Austin with a B.S. degree (1982) in geology.  He is a licensed Professional Geoscientist in the State of Texas (No 1762).  He has over 24 years of experience conducting environmental assessments and remediation projects for various environmental consulting companies and the Texas Department of Transportation.  He is currently the General Manager of the Gonzales County Underground Water Conservation District (2008- present).  Mr. Sengelmann is a member of the Texas Alliance of Groundwater Districts and a member (water district interest) of the South Central Regional Water Planning Group (Region L).

Parliamentarian – Lonnie Stewart

Lonnie Stewart is a long-time member of TAGD and is the manager of four groundwater conservation districts.