Urban Nutrient Management

Aerial of lawns

Turf grass covers a large portion of the Chesapeake Bay watershed

More than 3.5 million acres of urban pervious lands exist in the Bay watershed, comprising nearly 10% of its total area. This diverse category of land cover includes both fertilized and un-fertilized turf and is managed in many different ways. Bay states have collectively targeted more than 45% of the pervious land for the application of urban nutrient management (UNM) practices to help achieve load nutrient reductions to meet the Bay TMDL by 2025.

The Panel then reviewed more than 200 research studies and reports to understand turf grass N and P dynamics, homeowner fertilization behaviors, the effects of P fertilizer restrictions in watersheds outside of the Bay and the effect of various outreach campaigns to change those behaviors. The Panel also examined historic and recent trends in fertilizer sales across the watershed and confirmed the general adequacy of the technical assumptions for fertilizer inputs to pervious lands in the CBWM. Based on the science and best professional judgment, the Panel came up with a set up recommendations that outlines three types of nutrient reduction credits associated with the BMP of Urban Nutrient Management. On March 13, 2013 these recommendations were approved by the Water Quality Goal Implementation Team and became final – congratulations and thank you to all of our panelists! Download the final recommendations below to understand more about this important BMP.

Also, don’t forget to check out our newly developed Urban Nutrient Management “Fact Sheet” which breaks down the practice and the expert panel recommendations into delicious bite-size pieces…yum, yum, enjoy!

U-5 Urban Nutrient Management Fact Sheet

A 'fact sheet' on using Urban Nutrient Management as an urban BMP in the Chesapeake Bay Watershed.

Version august 2015 | Size (395 KB) | File type (.pdf) | Download

Urban Nutrient Management Final Report(s)

Recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management

The short report of the Chesapeake Bay Program approved recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management. This version does not include the appendices.

Version march 25, 2014 | Size (2 MB) | File type (.pdf) | Download

Recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management

The full report of the Chesapeake Bay Program approved recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management.

Version march 25, 2014 | Size (3 MB) | File type (.pdf) | Download

Appendix B Public Lands Literature Review

Appendix B of the Recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management final report.

Version march 25, 2014 | Size (805 KB) | File type (.pdf) | Download

Appendix C Sample Urban Nutrient Management Plan

Appendix C of the Recommendations of the Expert Panel to Define Removal Rates for Urban Nutrient Management final report.

Version march 25, 2014 | Size (898 KB) | File type (.pdf) | Download

Technical Requirements for Entering the UNM Practice into Scenario Builder

Appendix F of the Urban Nutrient Management Expert Panel Recommendations

Version september 13, 2013 | Size (161 KB) | File type (.pdf) | Download

Training Resources

The following training resources have been created for explaining the panel recommendations – enjoy!

Urban Nutrient Management to Help Restore the Chesapeake Bay

Recording of the webcast on MS4 Implementers and the Bay TMDL: Urban Nutrient Management Frequently Asked Questions which aired on May 8, 2014.

Version may 8, 2014 | Open link in new window

Urban BMPS and the Bay TMDL: A Users Guide – Urban Nutrient Management

Archived webcast on the Urban Nutrient Management as part of the Urban BMPs and the Bay TMDL series held at the 2013 Bay-wide Stormwater Retreat in Shepherdstown, WV in April 2013. Please note, UNM begins at 54:47.

Version october, 2016 | Open link in new window

Other Resources

CBP Expert Panel Literature Review: Urban Fertilizer Management

Size (116 KB) | File type (.xlsx) | Download