Delaware Lake, US Army Corps of Engineers

09/27/2025

Can you tell the difference between these two Butterflies? Here's a hint: Make sure you DOT your I when spelling "butterfly"!
That's right! one of these butterflies has a pair of black dots near the bottom of its wings. In fact, the dots tell us that one of these butterflies is a male (the one with the dots) and one is a female (the one without).

09/15/2025

Delaware Lake Update 9/15/2025 12:00
Lake Level- 914.77 (summer pool 915)
Outflow- 1.56 (approx. 23 cfs)
Boaters please be use extra caution, Delaware Lake is currently under our normal summer pool. From September 1-Oct 31 our water control manual mandates that we release a minimum of 20cfs for flows along the Olentangy and Scioto rivers, combined with the lack of rain, our lake has dropped a bit below 915. As the lake level drops submerged items may become hazardous to boaters, please use extra caution and always wear a life jacket!

09/13/2025

It’s the Delaware County Fair! Stop by for a visit 9/13-9/20 and go fishing with us to test your water safety knowledge!
Remember, friends make friends wear life jackets!

Alum Creek Lake, US Army Corps of Engineers

09/11/2025

09/08/2025

Marvelous Monarchs! Ranger Noah Brown and USACE volunteer Jennifer had a marvelous time with visitors from SourcePoint-Thrive After 55 this morning, when they met up at Delaware Dam for the Marvelous Monarch program. Each stage of the Monarch Butterfly's life cycle was shown, from egg, to caterpillar, to crysalis, and finally to butterfly. Program attendees learned about the importance of milkweed plants, the sole diet of Monarch Caterpillars and how they depend on the plant throughout their life cycle. In addition they learned about the amazing joureny Monarch Butterflys go on in the fall when they migrate south for the winter, some flying over 3,000 miles! It was a marvelous time showing off these amazing creatures!

09/03/2025

Just a little visit to the park office before heading off to bed 🦝😴

05/09/2025

Delaware Dam Update: We are opening up a bit more, we are taking our outflow to a stage height of 7.1ft today and tomorrow morning we are planning on opening to our max at 8.6 (4600 cfs).
This is of course all dependent of downstream conditions continuing to improve.
To monitor river and lake conditions, please visit: https://www.lrh-wc.usace.army.mil/wm/?basin/sci/ddo

05/08/2025

Delaware Dam Update: We have recieved a directive to begin releasing stored water from Delaware Lake. Current lake elevation is 932.04, roughly 17 ft over summer pool. Over the next several hours we will slowly begin raising the outflow to a stage height of 5.1 (approx. 1900 cfs).
Please use caution around high and swift moving water. Always remember to wear a life jacket! 🦺🛟
Current impacts due to high water:
-All Delaware State Park boat ramps are closed
-The State Park beach is closed
-Gearheiser Rd and Horseshoe Rd are currently impassable in spots.
-Pumping has started at Waldo Levee at the Tomahawk Pump Station.

05/07/2025

Delaware Dam Update: May 6, 2025
Current lake elevation: 925.86 (10:45pm)
Due to downstream conditions we’ve been given a directive to shutdown to minimum.
To track current conditions of the lake/river please visit: https://www.lrh-wc.usace.army.mil/wm/?basin/sci/ddo

05/05/2025

Delaware Lake and Dam Update: May 5, 2025 @ 5:30pm
Rain, rain, go away! 🌧️
We have received a directive to reduce outflow and store water in the lake. Current lake elevation is approximately 920.12 (about 5 feet over summer pool). Please expect lake levels to continue to rise and use caution around any high water. ⚠️
Currently the State Park Beach, Elmwood ramp, and the Marina boat ramp are closed. 🚫

05/04/2025

Delaware Lake Update: over the next several hours please expect river levels along the Olentangy to begin to rise. We will be slowing raising our outflow to a stage height of 5.1 (approximately 1900 cfs). Please use caution around swift moving water and always remember to wear your life jacket!
As of 08:45 the lake is at 917.78. Please note that at this elevation there is some impact to the State Park Beach. Please use caution around high water.