Rain garden maintenance – Early Fall 2026: Record-setting rainfall and stormwater runoff across Columbus led to the accumulation of weeds, trash and debris in our rain garden basins. This accumulation shows basins function as designed, removing pollutants from our rivers and streams. Contractors are currently removing those items, ahead of planned mulching, pruning and replanting of the basins as necessary this fall. All Blueprint rain gardens continue to receive monthly maintenance. You can learn more about the maintenance program HERE
Please note that construction schedules are subject to change due to weather, site issues, etc. Reference this MAP to view the impacted construction areas and details for next week.
Unsure about which is your area? Visit the Blueprint- map and type in your address to find out!
WALHALLA RAVINE STREAM RESTORATION – CONSTRUCTION UPDATES COMING SOON
Reference this MAP to view the impacted construction areas and details for next week.
***All scheduled work subject to local weather conditions***
New for 2026: Stream restoration is set to begin October 5! This long-anticipated project will help reduce pollution entering our waterways while sustainably securing the banks of the Walhalla Ravine on the eastern side near Clinton Hts. Ave.
Project information: The roadway material will be asphalt, with no added sidewalk (see final renderings below). This decision was based on community and resident feedback that overwhelmingly supported asphalt material, due to noise and long-term maintenance concerns. The guardrail material is timber on the roadside and reinforced in the back by weathered steel. Upon installation, it will appear shiny silver and, over time, will change to match the color of the wood.
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.
After feedback received during the February 28, 2024 public meeting, as well as multiple conversations with residents adjacent to the ravine, the final design will include an asphalt roadway with no additional sidewalk. The renderings below show the final designs selected.
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
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.
Learn More
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.
Learn MoreThere are currently 14 trees slated for removal 8-inch diameter or larger. Tree removal begins October 6, 2026.
The ravine will be closed to pedestrians and vehicles in the project
area between Clinton Heights and Longview Ave for the duration of
the project, beginning October 5, 2026.
The guardrail is necessary to uphold City and state standards for pedestrian and vehicle safety.
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.