The Minnesota Phosphorus Source Assessment Tool

The Minnesota Phosphorus Source Assessment Tool (PSAT) is used to identify the relative contribution of sources of phosphorus to a lake or stream. It can be used to educate stakeholders about the sources of P in a watershed, and to identify further sources of information and analysis needed to understand and solve phosphorus problems in a watershed.

Downloads

Download PSAT ( 600 KB Excel file) June 27, 2007 version

PSATcomparisonchart ( 50 KB Excel file) May 29, 2007 version. Use this file to create a stacked bar graph comparing multiple scenarios from the PSAT.

PSAT User Guide and Documentation ( 500KB pdf file) July 9, 2007

Data Collection Sheet ( 100KB pdf file)

"Assessing Watershed Phosphorus Sources" training sessions

Four PSAT training workshops were held in June 2007 in St. Cloud, Alexandria, Park Rapids, and Brainerd, Minnesota.

Agenda

PowerPoint presentations:

• Phosphorus Basics
• Phosphorus Loss Risk Factors
• Modeling Watershed Phosphorus
• Using the Phosphorus Source Assessment Tool

The Watershed Treatment Model

The PSAT is a variation of the Watershed Treatment Model. The WTM is available from the Center for Watershed Protection.

Updated July 9, 2007