Walhalla Ravine Restoration

Walhalla Stream Restoration is a Win-Win

Stream restoration in the Walhalla Ravine helps to preserve one of the city’s natural resources and helps to improve water quality by reducing Total Suspended Solids (TSS), which include sediment and various pollutants, from entering the stream due to bank erosion. By restoring banks on Walhalla Ravine, sediment is prevented from entering the Olentangy River downstream. By doing this stream restoration, the Blueprint project saves over $25 million and requires less green infrastructure to be built throughout the Clintonville 3 Blueprint project area.

Design Stage

Currently working to produce final design plans

Walhalla Design Update

Currently, the design team is working to produce a final plan, which incorporates feedback from our recent public meetings on October 11, 2023, and February 28, 2024. The City’s real estate team has also begun working with the seven impacted properties regarding easements.

Detailed Design Meeting 2/28/2024

Click HERE to view the slides from the presentation!

At the February 28, 2024 public meeting, residents were shown the following updated design renderings for the Walhalla ravine. These renderings show a variety of options for design, including brick versus asphalt road material. We are still accepting feedback and comments on these renderings as we approach final design.

Phase 1

Surveying: 2017-2018

8 permanent cross sections of the Walhalla Ravine were studied from June 2018 to October 2020. Results of this study indicated that Reach 1 and Reach 2 experienced the highest bank erosion rates, and the restoration of these sections would help Blueprint meet its TSS reduction goal. More information can be found here

Phase 2

Green Infrastructure Design: 2017-2024

After the Walhalla Ravine Study, Stantec developed preliminary plans for the Walhalla Ravine, which were communicated to impacted residents, FLOW, and FOTR. Input from residents, stakeholders, and other city departments further shaped these plans as the team developed the preferred design. This revised detailed design was presented to the community on October 11, 2023 and again on February 28, 2024. Stantec continues to incorporate feedback into this design as they make their way to final design.

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Phase 3

Shovels in the Ground: 2024

Construction of green infrastructure involves work in the public right-of-way and street. All neighborhood residents will be notified of anticipated impacts, and Blueprint will send out weekly construction updates to keep everyone informed of the schedule and activities.

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Frequently Asked Questions

How many trees are being removed from the ravine?

There are currently 11 trees slated for removal: ten 18” DBH trees and one 48” DBH tree.

Will the City close Walhalla Road?

At this time, closing the road is not on the table.

Why does a guardrail have to be installed along the stream?

The guardrail is necessary to uphold City and state standards for pedestrian and vehicle safety.

Why is only this portion of the ravine undergoing restoration work?

The ravine was studied with a comprehensive approach, and this is the section in most need of bank stabilization and stream restoration; restoring this stretch of the ravine aligns with Blueprint project goals.

Project Milestones: Community Touch Points

February 28, 2024: Walhalla Detailed Design Meeting

October 11, 2023: Walhalla Revised 60% Community Meeting

August 8, 2023: Walhalla Impacted Residents Revised Detailed Design Meeting

October 26, 2022: Walhalla Ravine Onsite Meeting with DPU leadership

October 10, 2022: Walhalla Ravine Detailed Design Meeting

October 2022: Impacted Resident Site Visits

June 8, 2022: FLOW Science Committee Meeting

November 24, 2021: Meeting with FLOW

September 21, 2021: Walhalla Ravine Resident Meeting (Impacted Residents)

August 20, 2021: Conversation with Friends of the Ravines and Walhalla Ravine Association