Water Issues in the Heartland: Regional Survey of Public Perceptions and Attitudes about Water.
Link to State and Regional Reports - available to download in pdf format. Published by ISU Extension. 
Presentation: Iowa Water Survey - Role for Extension
 
Agricultural Phosphorus Management and Water Quality Protection in the Midwest 
Charles S. Wortmann, U. Nebraska-Lincoln;
Matt Helmers and Antonio Mallarino, Iowa State University; Charles Barden, Dan Devlin and Gary Pierzynski, Kansas State University; John Lory and Ray Massey, University of Missouri-Columbia; John Holz and Charles Shapiro, University of Nebraska-Lincoln; John Kovar, USDA-ARS National Soil Tilth Laboratory.   Heartland Water Quality Bulletin, University of Nebraska Extension, RP187.
 
Agricultural Nitrogen Management for Water Quality Protection in the Midwest 
Charles S. Wortmann, U. Nebraska-Lincoln
Mahdi Al-Kaisi, Matt Helmers and John Sawyer, Iowa State University; Daniel Devlin and Charles  Barden, Kansas State U.; Peter Scharf, University of Missouri-Columbia
Richard Fergusen, William Kranz, Charles Shapiro, Roy Spalding, David Tarkalson and John Holz, University of Nebraska-Lincoln; Dennis Francis and Jim Schepers, USDA-ARS  Heartland Water Quality Bulletin, University of Nebraska Extension, RP 189