Allen Wehrmann spent 34 years in the Groundwater Section of the Illinois State Water Survey, including nine years as Section Head where he oversaw major efforts to assess long-term groundwater availability in Illinois with an emphasis on northeast and east-central Illinois (particularly the Mahomet Aquifer). He was approached by Layne Christensen to serve as project consultant assisting a coalition of Illinois communities seeking Sole Source Aquifer designation of the Mahomet. Wehrmann earned a B.S.C.E. from Iowa State University, is a registered Professional Engineer, is a certified Professional Groundwater Hydrologist (AIH), and is a Diplomate, Water Resources Engineer of ASCE’s AAWRE.