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SIEP Project sign with field behind

Who is involved
with SIEP? 

CSU Research Personnel

Colorado State University Professor Daniel Mooney

Principal Investigator

Dr. Daniel Mooney
Colorado State University

Dr. Mooney is an Assistant Professor of Agricultural and Resource Economics. He holds research, teaching, and extension appointments with an emphasis in agricultural production systems and farm business management. His research and outreach interests include agricultural production management, water and soil resource sustainability, technology adoption and impact evaluation, and farm financial management. He teaches Agricultural and Resource Enterprise Analysis (AREC 305) for undergraduates and Agricultural Production and Cost Analysis (AREC 605) for graduates. Prior to joining CSU, Dr. Mooney earned graduate degrees from the University of Wisconsin (Ph.D.) and Michigan State University (M.S.), served as a U.S. Peace Corps Volunteer in Panama, and worked as a research associate in Tennessee.

Colorado State University Professor Allan Andales

Co-Principal Investigator

Dr. Allan Andales
Colorado State University

Allan Andales is a Professor of Irrigation and Water Science in the Department of Soil and Crop Sciences at Colorado State University. He earned a B.S. Agricultural Engineering degree from University of the Philippines at Los Baños, and M.S. and Ph.D. degrees in Agricultural Engineering and Water Resources from Iowa State University. His research and teaching efforts are focused on conserving soil and water resources in agricultural systems. He teaches undergraduate classes in climate-smart irrigation principles and management; and engages the public in addressing agricultural water issues in Colorado. Graduate students and international scholars have been mentored in field hydrology and computer modeling of cropping systems for improving water use efficiency and quality.
Research Scientist Doctor Rebecca Hill

Co-Principal Investigator

Dr. Rebecca Hill
Colorado State University

Dr. Hill is a Research Scientist with a joint appointment in the Department of Agricultural and Resource Economics and the Office of Community and Economic Development. She teaches courses in Water Law, Agricultural Marketing, and Introductory Microeconomics. Her research has involved several water-related issues, including studies evaluating the economic contribution of irrigated agriculture to the state as well as the impacts of water transfers. Dr. Hill served for 8 years on the City of Fort Collins water board and is currently a co-director of the Colorado Hemp Advancement Management Plan.


Graduate Research Assistant

Mutahir Sultan
Colorado State University


Mutahir Sultan is a second-year PhD student and a Graduate Research Assistant at Colorado State University’s Department of Agriculture and Natural Resource Economics. She is actively involved in the Subsurface Irrigation Efficiency (SIEP) project, focusing on research related to deficit irrigation techniques for alfalfa production and water use efficiency.  Her research interests primarily revolve around climate change mitigation, sustainable water management, and Water-Energy-Food Nexus.  


Research Associate

Marissa Spear, M.S.
Colorado State University


Marissa Spear is a research associate in Soil & Crop Science department focused on cropping system sustainability in Colorado. Her role at SIEP includes science outreach efforts and research planning. Her primary research interests include pulse crops and their relation to food security, water use, and soil health. 

Graduate Research Assistant

Kim Seonhyen
Colorado State University

Project Sponsors

United Water and Sanitation District logo
As a special district that develops infrastructure projects for Colorado’s Front Range communities, United is committed to working with its clients to identify renewable water resources and provide delivery and treatment systems that meet each client’s unique needs.
Netafim Logo
Netafim is the global leader in drip and micro-irrigation solutions for a sustainable future. Since introducing the world's first drip irrigation system in Israel in 1966, Netafim has led the way by developing reliable, simple and affordable products that help its customer achieve optimal and sustainable resources.
Colorado State University Logo
Founded in 1870 as the Colorado Agricultural College, Colorado State University is now among the nation’s leading research universities, with annual expenditures topping $300 million. Located in Fort Collins, CSU currently enrolls about 22,000 undergraduate students, 3,100 graduate students. The university has more than 1,700 faculty members working in eight colleges on four local campuses and online. More information is available at:
70 Ranch Logo

The 70 Ranch is approximately 14,000 acres of farming and grazing land along the South Platte River just east of Kersey, CO. Founded in the early 1900’s, the 70 Ranch has a long history of livestock and agricultural activities. Today, the Ranch strives to be an active member of the community, providing donations of time and money to local 4-H groups, Future Farmers of America, the American Cancer Society’s annual Cattle Baron’s Ball and Boy Scouts of America.

Jewish Colorado Logo
Jewish Colorado is dedicated to bringing together the Jewish community, educating this generation and the next and using the power of its donor generosity to make a difference in the lives of others.
Platte River Water Development Authority

The Platte River Water Development Authority (PRWDA) is a governmental authority created in cooperation between the Sand Hill Metropolitan District and the United Water and Sanitation District for purposes of studying and implementing water resources and water efficiency solutions for the South Platte River system. It serves as the primary governmental authority for operations associated with SIEP.

SIEP Operations Personnel

Project Manager Jason VonLembke

Project Manager

Jason VonLembke
Platte River Water Development Authority

Gilbert Marin Sr.

Land and Agricultural Manager

Gilbert Marin Sr. 
70 Ranch

70 Ranch Manager Gilbert Marin Jr.

Ranch Operations Manager

Gilbert Marin Jr. 
70 Ranch

SIEP Sponsors Netafim, Jewish Colorado, 70 Ranch, United Water and Sanitation District, Colorado State University, and Platte River Water Development Authority
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