Nutrients like nitrogen and phosphorus are necessary for healthy waters, but high levels of nutrients can cause a number of problems, ranging from nuisance algae blooms and cloudy water to threatening drinking water and harming aquatic life.

Nutrients and Water Quality

Lake Nutrient Criteria to Protect Recreation:

• Notice of Intended Action,*.pdf
• Fiscal Impact Statement,*.pdf
• List of Lake Depths,*.pdf
• How Many Lakes Will Meet New Criteria?,*.pdf
• Literature Citations,*.pdf
• Statistical Analysis of Lake and Watershed Characteristics,*.pdf

Nutrient Science Advisory Committee:

• Roster (*.pdf file)
  
  
• Final Report of NAC, February 14, 2008 (*.pdf file)
  
  
• Meeting Agenda - November 5, 2007 (*.pdf file)
  • Meeting Minutes - November 5, 2007 (*.pdf file)
  
  
• Meeting Agenda - October 15, 2007 (*.pdf file)
  • Meeting Minutes - October 15, 2007 (*.pdf file)
  
  
• Meeting Agenda - August 9, 2007 (*.pdf file)
  • Meeting Minutes - August 9, 2007 (*.pdf file)
  
  
• Meeting Agenda - July 19, 2007 (*.pdf file)
  • Meeting Minutes - July 19, 2007 (*.pdf file)
  
  
• Meeting Agenda - June 26, 2007 (*.pdf file)
  • Meeting Minutes - June 26, 2007 (*.pdf file)
  
  
• Meeting Agenda - June 13, 2007 (*.pdf file)
  • Meeting Minutes - June 13, 2007 (*.pdf file)

Public Hearing Schedule:
Any person may submit written suggestions or comments on the proposed amendments through January 23, 2010. Such written material should be submitted to Chuck Corell, Iowa Department of Natural Resources, Wallace State Office Building, 502 East 9th Street, Des Moines, Iowa 50319-0034, fax (515)281-8895 or by E-mail to Chuck.Corell@dnr.iowa.gov. Persons who have questions may contact Chuck Corell at (515)281-4582.

Persons are invited to present oral or written comments at public hearings which will be held:

January 11, 2010	10:00 AM	Wallace State Office Building Fifth Floor Conference Rooms 502 East 9th Street Des Moines, IA
January 13, 2010	1:00 PM	Clear Lake Public Library 200 North Fourth Street Clear Lake, IA
January 14, 2010	10:00 AM	Atlantic Municipal Utilities Conference Room 15 W 3rd St Atlantic, IA
January 14, 2010	6:00 PM	Iowa Lakeside Laboratory Waitt Building, 1838 Highway 86 Milford, IA
January 21, 2010	10:00 AM	Falcon Civic Center 1305 5th Avenue NE, Independence, IA
January 21, 2010	4:00 PM	Meeting Room B Washington Public Library 115 West Washington St. Washington, IA