Headquartered in Loveland, Colorado and founded on the core value of stewardship, Precision provides technical support to managers of complex water resource systems. Precision facilitates precise and efficient management
of these systems, to the benefit of all water users.


Precision Water Resources Engineering Team 2018

Precision Water Resources Engineering Team


Shane Coors, MS, PE //  Principal

The founder and principal of Precision Water Resources Engineering, Mr. Coors received a BS in Engineering Physics from Westmont College, and an MA Civil Engineering from Texas A&M University. He taught in the Physics department of the University of Utah for four years, while working toward a MS in Computational Physics. He was employed by the United States Bureau of Reclamation in Salt Lake City and Carson City for six years, specializing in water resource system modeling. He left federal service in 2008 to start Precision. He is a registered professional engineer in the state of Nevada. Mr. Coors specializes in RiverWare model development, high-precision realtime operations modeling, and utilizing water resource system models to support reservoir operations, planning studies, climate change studies, NEPA compliance, and expert witness services.  Send Shane an email >


Michael Coleman, PhD, PE //  Project Manager

Dr. Coleman received a PhD from Colorado State University in Civil Engineering, an MS in Environmental Engineering from the University of Texas, as well as a BS in Civil Engineering, an MA in Mathematics, and a BS in Mathematics all from the University of Kentucky.  Dr. Coleman was a Postdoctoral Research Fellow at CSU and at Pontificia Universidad Catolica de Chile, in Santiago, Chile before joining the PWRE staff in 2015.  Dr. Coleman is a Professional Engineer in the state of Kentucky, where he worked for several years in a consulting firm.  Dr. Coleman has an extensive background in developing and calibrating state-of-the-art hydrologic models, as well teaching experience at CSU. Send Mike an email>

Caleb Erkman, EIT //  Water Resources Engineer

Mr. Erkman received a double B.S. in Civil Engineering and Physics at Colorado State University. While studying at CSU, he worked with Colorado State Extension developing spreadsheet utilities for crops, water rights, and irrigation. He participated in an internship with Water For Life developing and implementing sustainable water resources for the people of Kosovo. He is a certified engineer-in-training in the state of Colorado. Mr. Erkman specializes in RiverWare modeling, modeling river hydraulics, hydrologic mapping and hydraulic analysis in GIS, developing spreadsheet based decision support tools, and Riverware Accounting. He has been working with Precision since 2013. Send Caleb an email>

Heather Gacek, MS, PE  //  Project Manager

Ms. Gacek received a BS in Civil Engineering from the University of Pittsburgh, followed by an MS in Civil Engineering from the University of Colorado where she concentrated on Water Resources Engineering.  She worked at the Center for Advanced Decision Support for Water and Environmental Systems (CADSWES), the developers of RiverWare, while studying at the University of Colorado. A Professional Engineer in the state of Pennsylvania, her experience includes developing a Yield Study for the Department of Water Affairs and Forestry in the Republic of South Africa, assisting with RiverWare Simulation and Rulebased Simulation Training Courses at CADSWES. She has been with Precision since 2010 and specializes in developing RiverWare planning models, and their utilization to support long-term planning and climate change studies. Send Heather an email>

Andrew Gilmore, MS //  Project Manager

Mr. Gilmore received a BA in Geology and an MS in Civil Engineering (Water Resources) from the University of Colorado. Before and during his master’s program, he worked at the Center for Advanced Decision Support for Water and Environmental Systems (CADSWES), the original developers of the Hydrologic Database (HDB). From there, he began his career of federal service, first with the Bureau of Reclamation in Salt Lake City, and then with Reclamation and the Western Area Power Administration in Loveland. He specializes in data-driven solutions to water and power problems, integrating technology and information to create intelligence about difficult policy decisions. In 2015, he joined Precision to expand the capabilities and support of HDB. Send Andrew an email>

Tony Powell, MS, PE //  Water Resources Engineer

Mr. Powell received a BS in Civil Engineering from the University of Colorado at Boulder. This was followed by a year working for Ninham Shand Consulting Services in Cape Town, South Africa where he contributed to water resource studies and projects.  He continued his education by receiving an MS in Civil Engineering at the University of Colorado where he focused on Water Resource Management.  Following his Masters degree, he worked as an independent consultant in Washington, DC, working for the World Bank and concentrating on analyzing the impact of climate change on river basin management in parts of Sub-Saharan Africa and southeast Europe.  In 2012, Mr. Powell joined Precision and supported the development of operations and planning models for their use in management practices and became a professional engineer in 2014.  In 2016, Mr. Powell and his wife took time away from their careers and spent some time abroad. Mr. Powell rejoined Precision in 2017, and will continue his support in the development of RiverWare models for river basin operational management and planning purposes. Send Tony an email>

Todd Vandegrift, MS, PE //  Project Manager

Mr. Vandegrift received a Bachelor of Civil Engineering and an MS in Civil Engineering from the University of Minnesota where he focused on Water Resources Engineering with a minor in Natural Resources Science and Management and a post-baccalaureate certificate in Stream Restoration Science and Engineering. Before joining Precision in 2016, Mr. Vandegrift spent the first five years of his career working in the Water Resources Operations and Planning Support Group of the Bureau of Reclamation’s Technical Service Center in Denver, CO, where he gained a wide variety of experience in many aspects of water resource modeling in many river basins across the western United States. He specializes in river and reservoir system modeling using RiverWare and various other software packages. Send Todd an email>