River stage
Delaware Lake, Olentangy River
- River level
- 915.36 ft
- Status
- Below flood stage
- Action stage
- 932.00 ft
Last reported 2026-10-13 | NWS DLWO1
In brief
The Olentangy River at Delaware Lake, OH read 915.36 ft on Oct 13, 2026, 16.64 ft below action stage.
Source: National Weather Service gauge DLWO1
Stage threshold profile
At this level: Summer Pool.
What happens at each level
Written by the local National Weather Service forecast office for this exact gauge.
| Stage | Impact |
|---|---|
| 910.00 ft | Winter Pool. |
| 915.00 ft | Summer Pool. |
| 924.00 ft | Gearhiser Road in Marion County is impassable. |
| 934.00 ft | State Route 229 is flooded in both directions between U.S. 23 and Horseshoe Road |
| 936.00 ft | Park closed, all areas evacuated |
| 945.40 ft | Record Pool, set in January 2005. |
| 947.00 ft | Spillway Crest. |
| 957.00 ft | Top of Dam. |
Frequently asked questions
Is the Olentangy River flooding at Delaware Lake?
No. The Olentangy River at Delaware Lake is at 915.36 ft, 16.64 ft below action stage.
What is the flood stage at Delaware Lake?
Action stage 932 ft is the first threshold.
What is the highest the Olentangy River has been at Delaware Lake?
The National Weather Service has not published a crest history for this gauge.
Stage and flood information from the NOAA National Weather Service (gauge DLWO1); daily history from the U.S. Geological Survey (site 03225000). Last reading 2026-10-13. For flood safety decisions always follow official National Weather Service warnings.