New techniques have been pioneered in the Chesapeake Bay watershed to restore urban streams and their floodplains using diverse design approaches. These techniques can achieve significant nutrient and sediment removal while also restoring a number of other critical stream functions.

Revisiting Stream Restoration

In mid-2018, the Chesapeake Bay Program’s Urban Stormwater Workgroup asked CSN to facilitate a series of teams to re-evaluate the stream restoration protocols outlined by the Expert Panel and provide better guidance for practitioners. The result of that effort is four memos that now represent the official Chesapeake Bay Program recommendations for crediting stream restoration practices.

To access all of the most critical information from these updates in one place, please check out our Unified Guide, below. All of the Bay Program approved memos that provide the source material for the Unified Guide are also available below.

Unified Guide:

A Unified Guide to Crediting Stream and Floodplain Restoration Practices in the Chesapeake Bay Watershed

This new guide is a concise, easy-to-navigate resource that combines all of the critical information from the four recent updates to the 2014 Stream Restoration Expert Panel report. Finalized in September, 2021.

Size (1 MB) | File type (.pdf) | Download

2019-2020 Memo Updates:

Download “Recommended Methods to Verify Stream Restoration Practices Built for Pollutant Crediting in the Chesapeake Bay Watershed” Approved-Verification-Memo-061819.pdf – Downloaded 2419 times – 1 MB

Download “Recommendations for Crediting Outfall and Gully Stabilization Projects in the Chesapeake Bay Watershed” FINAL-APPROVED-OUTFALL-RESTORATION-MEMO-101519.pdf – Downloaded 1739 times – 15 MB

Download “Consensus Recommendations for Improving the Application of the Prevented Sediment Protocol for Urban Stream Restoration Projects Built for Pollutant Removal Credit” PROTOCOL-1-MEMO_WQGIT-Approved_revised-2.27.20_clean_w-appendices.pdf – Downloaded 3050 times – 4 MB

Download “Consensus Recommendations to Improve Protocols 2 and 3 for Defining Stream Restoration Pollutant Removal Credits” FINAL-Approved-Group-4-Memo_10.27.20.pdf – Downloaded 1745 times – 3 MB

Other Stream Restoration Resources

Below, you will find several older resources including the final Expert Panel report, completed in 2014, that originally defined the nutrient and sediment reductions that can be achieved using stream restoration techniques. The Expert Panel report is still a useful resource, but it is recommended that practitioners begin using the guidance in the new reports listed above. A CSN Fact sheet and FAQ document are also provided, but refer to the 2014 report, not the newer memos. These resources will be updated as soon as possible.

U-4 Stream Restoration Fact Sheet

Download “Stream Restoration FAQs” Stream-Restoration-FAQ_final-1.pdf – Downloaded 1753 times – 270 KB

Stream Restoration Expert Panel Report: Final

Training Resources

[Webcast] Stream Restoration Revisited

Verifying Stream Restoration Practices

[Webcast] BUBBAs Highlights: Stream and Wetland Restoration Success Stories

Other Resources

Download “Principles for Verifying Stream Restoration Projects” Principles-for-Verifying-Stream-Restoration-Projects_Final_Feb_6.pdf – Downloaded 1497 times – 686 KB

Download “Appendix A. Annotated Literature Review” Appendix-A.-Annotated-Literature-Review.pdf – Downloaded 1017 times – 503 KB

Download “Appendix B. Protocol 1 Supplemental Details” Appendix-B.-Protocol-1-Supplemental-Details.pdf – Downloaded 1363 times – 575 KB

Download “Appendix C. Protocol 2 and 3 Supplemental Details” Appendix-C.-Protocol-2-and-3-Supplemental-Details.pdf – Downloaded 1257 times – 703 KB

Download “Appendix G Clarifications and Edits from Test Drive Final ” Appendix-G-Clarifications-and-Edits-from-Test-Drive-Final-02062014.pdf – Downloaded 1293 times – 635 KB

Download “A Function-Based Framework for Stream Assessment and Restoration Projects.” A_Function-Based_Framework-2.pdf – Downloaded 1248 times – 8 MB

Download “CBP Expert Panel Literature Review: Stream Restoration” CB-Urban-Stream-Resto-Reference-List_20120224.xlsx – Downloaded 2030 times – 66 KB