Ohio lakes · Shelby County, Auglaize County
Lake Loramie
Built 1844-45 as a Miami & Erie Canal feeder, Lake Loramie floods the site of an 18th-century trading post and fort that once marked the Treaty of Greenville line.
- Built 1844
- 629 acres
- Loramie Creek
- Ohio Department of Natural Resources
At a glance
| Fact | Value |
|---|---|
| Built | 1844-45 |
| Dam type | Earth |
| Dam height / length | 23 ft / 8,230 ft (about 1.56 miles) |
| Normal pool surface area | 629 acres (NID); park literature cites up to about 1,655 acres |
| Max storage | 11,717 acre-feet |
| Drainage area | 78 square miles |
| Operator | Ohio Department of Natural Resources, Division of Parks and Watercraft |
| Stream | Loramie Creek |
| Counties | Shelby, Auglaize |
| Park | Lake Loramie State Park, 407 acres of park land, about 30 miles of shoreline |
| Hazard classification | High (Class I) before the 2016-2018 spillway rebuild |
| Original purpose | Feeder reservoir for the Miami & Erie Canal's summit level |
Before the lake
The ground under Lake Loramie carries more history per square mile than almost any other Ohio reservoir site. Around 1769, French-Canadian fur trader Pierre-Louis de Lorimier — anglicized as "Peter Loramie" — established a trading post at the mouth of Loramie Creek, dealing with Shawnee and Wyandot bands. In 1782, during the chaos of the Revolutionary War's western theater, General George Rogers Clark sent roughly a hundred Kentucky riflemen to destroy the post and nearby Native towns. One historical marker's account translates Lorimier's loss as worth "over a million dollars in today's currency," for which he received no compensation. He fled, eventually settling under Spanish authority at Cape Girardeau, in present-day Missouri, by 1787.
Twelve years after the raid, following the U.S. victory at Fallen Timbers, General "Mad" Anthony Wayne ordered a fort built on the same site as a supply depot supporting Forts Recovery, Defiance and Wayne. This Fort Loramie became a named point on the boundary line of the Treaty of Greenville in 1795, which divided United States territory from Indian country in western Ohio, running from the fort toward Fort Recovery. The fort was abandoned by around 1812. In August 2021, researchers with the Wayne's Legion Research Group found the fort's north stockade wall — 48 feet, 3.5 inches long — on the Fleckenstein farm about 100 yards north of the creek, the first Ohio stockade line located in nearly 50 years, according to the Sidney Daily News.
The village at the reservoir's south end was platted in the 1875 Shelby County atlas as "Berlin," with early German settlers naming it after the German capital even as the post office kept the "Loramie's" name. It incorporated in 1889 as "Loramies" or "Loramies Village," then was formally renamed Fort Loramie around 1911-1912, honoring the trader once more. Whether that renaming reflected simple local preference or the broader wave of anti-German place-name changes that swept Ohio around World War I (as happened at North Canton, formerly New Berlin) is not settled — the rename predates America's 1917 entry into the war by several years.
Building the dam
Ohio's Miami & Erie Canal needed a guaranteed water supply at its summit level running through Shelby, Auglaize and Mercer counties. Between 1825 and 1847 the state, acting through the Ohio Board of Public Works, authorized and built a series of artificial feeder reservoirs totaling more than 33,000 acres of surface statewide — Grand Lake St. Marys, Indian Lake, Lockington Reservoir and Loramie Reservoir among them. Loramie Reservoir was built in 1844-45, impounding Loramie Creek behind an earthen embankment to store water released into a short feeder canal joining the Miami & Erie main line.
The dam that survives today, recorded in the National Inventory of Dams as OH00442, is 23 feet high and 8,230 feet long — one of the longer small-dam embankments of its kind in Ohio — with a volume of about 27,000 cubic yards. No engineer or contractor's name for the original 1844-45 construction has surfaced in the sources checked so far; the Ohio Board of Public Works' own annual reports from the 1840s would be the primary record, and a specific volume covering that exact construction period has been identified but not yet read. A librarian's stamp on a digitized title page traces it to the Ninth Annual Report of the Board of Public Works of the State of Ohio, printed by C. Scott and Co. in Columbus, dated December 12, 1845 — held by the State Library of Ohio, non-circulating, but its interior pages were never digitized.
The state took the flooded land by condemnation under the Board of Public Works' statutory authority, the same mechanism used at Ohio's other canal-era feeder reservoirs, with landowners entitled to file damage claims adjudicated by county-appointed viewers or the courts. No specific acreage figure, named landowner, or condemnation case from the actual 1844-45 taking has been located. The best surviving trace of who lived on the reservoir's margins comes three decades later, from the 1875 Shelby County atlas's plat of McLean Township, which shows "LORAMIE RESERVOIR" ringed by named landowners: H. Berning, J. G. Berning, P. Rotterman, J. H. Plieman, A. Plieman, H. Dressman (and the Dressman heirs, an estate parcel), C. Krucken, F. Eilerman, F. J. Eilerman, B. Holthouse, B. Vondrelle, J. Heitman, J. Sturman, C. Fleckenstine, J. Ronnebaum, J. Rotterman and H. Klocker — a concentration of German Catholic surnames consistent with the documented 1830s-40s settlement wave in the Minster and Fort Loramie area, though this 1875 snapshot shows who lived beside the reservoir a generation after it filled, not necessarily who was bought out to build it.
Stories
The trader, the raid and the treaty line
Pierre-Louis de Lorimier's trading post is one of the older documented European commercial sites in what is now western Ohio, predating both the end of the American Revolution and every other place name attached to Ohio's canal-era feeder lakes. A single square mile of Shelby County ground carries, in sequence: an 18th-century French trading post, a war, a fort, a national treaty boundary line, and — half a century later — an artificial lake, all under the same name.
A working reservoir wearing a park's clothes
Unlike the flood-control lakes elsewhere in this program, Lake Loramie was never built for recreation or drinking water — it was built as industrial plumbing for a canal that has not carried a boat in well over a century. Its high-hazard classification and 2016-2018 labyrinth-spillway rebuild are reminders that the earthen embankment holding it back is still, functionally, 180-year-old canal infrastructure doing a dam's job beneath a state park's campground.
The 141 frogs
The Shelby County Democrat, July 31, 1874, reported: "A Big Catch of Bull Frogs. Yesterday Messrs. Ayers, Burress, Conklin and Stewart went out to Loramie Reservoir to catch frogs. They returned at sundown laden with their spoils. The net proceeds counted 141 frogs." Thirty years after it was built purely for canal water supply, the reservoir had already become a place four named men spent a summer day.
"Measures be taken to clean out Loramie Reservoir"
The same newspaper, February 12, 1875, recorded a maintenance dispute: "Representative Green has presented a petition to the Legislature asking that measures be taken to clean out Loramie Reservoir." Three decades in, the reservoir already needed dredging or clearing, and it took a legislative petition to press the point.
The Vondrele House
A weekly advertisement for the "Vondrele House" hotel, at the corner of Main and Shelby streets in the village of Berlin, proprietor Jo Vondrele, ran in the Shelby County Democrat for at least five years running through the 1870s — the same Vondrele family that owned a parcel directly on the reservoir's shore according to the 1875 atlas plat. It is a small, concrete thread connecting a named landowning family to a named local business, in a village that would itself be renamed within Loramie's own lifetime.
The lake since
An 1873 Ohio Board of Public Works annual report — the earliest primary-source documentation found for the reservoir's operational history — records a real drought year in action: "Lewistown, Loramie's and Six-mile creek reservoirs were all full in May" 1873, but owing to a dry season, "the Lewistown and Loramie's reservoirs were emptied about the 15th of [November 1873], after having supplied a draft of nearly five months' duration." The same report notes that "the feeder-dam below the mouth of Loramie's creek was pretty extensively repaired, by rebuilding a part of the crib, and filling the same with stone and gravel; dam was replanked" — routine 19th-century maintenance to the same structure still in service today.
Canal commerce declined statewide with the rise of railroads in the later 1800s, and the catastrophic 1913 flood — the same disaster that devastated Columbus and Dayton — is generally cited as marking the practical end of the Miami & Erie Canal's working life, including at Loramie, though a Shelby- or Auglaize-specific eyewitness account of that flood at the reservoir itself has not surfaced.
Sources disagree on exactly when Lake Loramie became a formal state park: one local history gives March 3, 1917, as the date the Ohio legislature designated it for public recreational use, while most other sources — including a 2025 welcome-center exhibit — date the creation of Lake Loramie State Park to 1949, the year the newly formed Ohio Department of Natural Resources took over management of the state's former canal lands. The two dates may describe different milestones: an earlier legislative designation, followed decades later by ODNR's formal park administration. In 1949 the Lake Loramie Improvement Association organized locally to push capital improvements, and between roughly 1988 and 2007 the park added boat ramps, a sewer district, shower facilities, electrical campsite hookups and hiking trails.
By the 2010s the dam had been rated Class I, high hazard — one of 27 such ODNR-owned dams statewide at the start of the agency's Dam Risk Reduction Program. Between 2016 and 2018, ODNR rebuilt the spillway as an offline labyrinth weir — a zigzag concrete structure that multiplies effective crest length to increase discharge capacity — paired with a floodwall rather than a new embankment tie-in, saving an estimated $300,000 in farmland acquisition. The project cost $5.8 million and was designed and project-managed by Michael Baker International (engineer of record James Hilovsky for ODNR, project manager Brian Afek for Baker), built by Miller Brothers Construction, and celebrated with a June 15, 2018 ribbon-cutting attended by ODNR Director Jim Zehringer, state Rep. Keith Faber, former Rep. Jim Buchy and Fort Loramie Mayor Randy Ahlers. By the end of that fiscal year, ODNR's statewide count of high-hazard Class I dams had dropped from 27 to six.
Most recently, a new welcome center opened at the park's campground entrance on September 9, 2025, with Governor Mike DeWine and ODNR Director Mary Mertz on hand for the ribbon-cutting. Its exhibits trace the area's story "from the Ice Age through the lives of indigenous communities, early settlers, canal-era development and the creation of Lake Loramie State Park," and its architecture is meant to reflect the heritage of the Miami & Erie Canal.
The water
Lake Loramie's original and primary function was hydraulic, not municipal: a canal feeder storing water for the Miami & Erie Canal's summit level, not a drinking-water source. No source ties a public water-supply intake for Minster or Fort Loramie to the lake itself, unlike nearby Grand Lake St. Marys, which supplies Celina.
Loramie Creek's watershed drains 78 square miles to the dam, within a larger 265-square-mile watershed measured at the creek's mouth on the Great Miami River near Piqua — part of the Great Miami, Ohio and Mississippi River drainage. Downstream of the lake, the creek passes through Lockington Dam, a dry, flood-control-only U.S. Army Corps of Engineers structure near the village of Lockington, before joining the Great Miami River about a mile north of Piqua; Lockington Dam is a separate structure from Lake Loramie's own dam.
Ohio EPA and the Ohio Department of Health have issued recreational public-health advisories for harmful algal blooms at Lake Loramie in at least one bloom season, according to aggregated coverage of Ohio's algae problem. The lake sits in a heavily row-cropped watershed roughly 15 miles from Grand Lake St. Marys, which has suffered Ohio's most severe chronic algal-bloom problem, making agricultural nutrient runoff the expected driver at Loramie as well, though a lake-specific nutrient study has not been located. ODNR's Division of Wildlife manages fishing for crappie, bluegill, channel catfish, bullhead, carp and largemouth bass.
Sources
- Fort Loramie / Lorimier's Trading Post historical marker (HMdb.org)
- Lake Loramie spillway completed (Sidney Daily News, 2018-06-15)
- New Lake Loramie welcome center opens (Sidney Daily News, 2025-09-09)
- Site of Fort Loramie discovered (Sidney Daily News, 2021-08-19)
- Lake Loramie State Park (Wikipedia)
- Fort Loramie, Ohio (Wikipedia)
- Loramie Creek (Wikipedia)
- Michael Baker International: Ohio dam rehabilitations
- Ninth Annual Report of the Board of Public Works of the State of Ohio, 1845 (Internet Archive / DPLA)
Timeline
80 dated newspaper stories, reports and records about Lake Loramie, 1872 to 2026, each linked to its source.
Show all 80
- Anglers fish Loramie Reservoir (1872) Shelby County Democrat
- Shelby County citizens petition regarding Loramie Reservoir (1874) Shelby County Democrat
- A big catch of bullfrogs at Loramie Reservoir (1874) Shelby County Democrat
- Petition to the legislature to clean out Loramie Reservoir (1875) Shelby County Democrat
- Fishing party at Loramie Reservoir (1876) Shelby County Democrat
- German-language paper reports 100 members joined the Lake Loramie Pakt Division Stern des Westlichen Ohio
- Canal bed between Lake Loramie and New Bremen to be cleaned and dredged; foreman John Sunderland Fort Recovery Journal
- Family reunion with swimming and picnic dinner at Lake Loramie Journal
- Local history program recalls Gen. 'Mad' Anthony Wayne general orders tied to Loramie/St. Marys region Journal
- Lake Loramie (Shelby County) listed among state waters under fish/game regulation with Jackson Lake, Lake Alma Journal and the Mercer County Photo News
- Lake Loramie touted as accessible fishing spot for bass and panfish near Lake St. Marys Journal
- Lake Loramie listed among Ohio state park/reserve waters (Grand St. Marys Lake, Indian Lake, Kiser Lake) Journal
- Lake Loramie area family gathering noted in social column Mercer County Chronicle Journal
- Cattle access to feed lot on island in Lake Loramie described Mercer County Chronicle Journal
- Body recovered from Lake Loramie; Shelby County Coroner Dr. John Marsh involved Mercer County Chronicle Journal
- Boating at Lake Loramie noted in area social column Journal
- Lake Loramie named among area lakes (with Lake Catawba, Van Buren) in travel/visit notes Journal
- New Idea Caravan/Governor's Day event held at Lake Loramie Journal
- Crappie fishing report for Lake Loramie by District 5 Fish Production Foreman Jerry Gallant Journal
- Lake Loramie stocked with 742 muskellunge, per Assistant Fish Management Supervisor John Flinn Journal
- Lake Loramie test-netted 72 hours (Sept 30-Oct 2); twelve fish species recorded Journal
- Snowmobiling on canal lakes including Lake Loramie restricted to frozen lake surfaces only Journal
- The Lake Loramie boat parade from this past Sunday, July 27 sponsored by The Lake Loramie Improvement Association Sidney Daily News
- Lake Loramie Fishing Derby to be held May 2 Minster Community Post
- Video of Lake Loramie ice rescue training Sidney Daily News
- Lake Loramie festival set Sidney Daily News
- Lake Loramie State Park Fall Festival Sidney Daily News
- Flooding at Lake Loramie, June 18, 2015 Minster Community Post
- Lake Loramie to host annual Fall Harvest Fest Sept. 18-20 Minster Community Post
- Lake Loramie Boat Parade Takes to the Water Minster Community Post
- Lake Loramie Boat Parade Will Feature TV Show Boats Minster Community Post
- Photo of the Day: Taking Flight at Lake Loramie Minster Community Post
- Free firewood available at Lake Loramie Sidney Daily News
- Firewood now available at Lake Loramie Sidney Daily News
- Lake Loramie Heritage Museum open for the season Sidney Daily News
- Volunteer campground hosts needed for Lake Loramie State Park Sidney Daily News
- JobsClassifiedsSubscribeE-EditionHomesAndroid AppiOS/iPhone App Sidney Daily News
- JobsClassifiedsSubscribeE-EditionHomesApps:AndroidiPhone/iPad Sidney Daily News
- Speaker Talks Lake Loramie Minster Community Post
- JobsClassifiedsSubscribeE-EditionHomesApps:AndroidiPhone/iPad Sidney Daily News
- Lake Loramie Fall Harvest Festival This Weekend Minster Community Post
- Lake Loramie Improvement Association Boat Parade Takes to Water Minster Community Post
- JobsClassifiedsSubscribeE-EditionHomesApps:AndroidiPhone/iPad Sidney Daily News
- Lake Loramie Hosts Halloween Campouts In October Minster Community Post
- Lake Loramie spillway completed Sidney Daily News
- Lake Loramie spillway completed Sidney Daily News
- Digging for buried treasure at Lake Loramie Sidney Daily News
- Lake Loramie Heritage Museum to offer free pontoon rides Sidney Daily News
- Lake Loramie celebrates new outdoor fitness park Sidney Daily News
- Lake Loramie Fall Festival coming soon Sidney Daily News
- Book highlights Lake Loramie's wildlife Sidney Daily News
- Free pontoon boat rides at Lake Loramie Sidney Daily News
- Lake Loramie Hosts Fishing Derby Saturday, May 5 Minster Community Post
- Plans for Adaptive Kayak, Boating Launch on Lake Loramie in the Works Minster Community Post
- Lake Loramie Fall Festival coming soon Sidney Daily News
- Lake Loramie Fall Festival coming soon Sidney Daily News
- Flooding at Lake Loramie Minster Community Post
- Lake Loramie Fall Harvest Festival Sidney Daily News
- Lake Loramie readies for reopening, Memorial Day weekend Sidney Daily News
- Camper injured at Lake Loramie in fair condition Sidney Daily News
- Storm causes tree damage at Lake Loramie Sidney Daily News
- Lake Loramie Fall Festival ready for a comeback Sidney Daily News
- Fall Festival returns to Lake Loramie Sidney Daily News
- Senior Center Singers to perform at Lake Loramie Sidney Daily News
- Celebrating the 40th Lake Loramie Fall Harvest Festival Sidney Daily News
- Lake Loramie to host Annual Spring Camp Out and Fishing Derby Sidney Daily News
- Lake Loramie Fall Festival coming soon Sidney Daily News
- Kayaking on Lake Loramie Sidney Daily News
- Sunset over Lake Loramie Sidney Daily News
- Lake Loramie Fall Harvest Festival - Sidney Daily News Sidney Daily News
- Lake Loramie festival returns Sept. 15-17 - Sidney Daily News Sidney Daily News
- Land Bank to sell property near Lake Loramie - Sidney Daily News Sidney Daily News
- Construction starting on welcome center at Lake Loramie State Park Sidney Daily News
- Photos: Lake Loramie hosts 75th birthday party of ODNR - Sidney Daily News Sidney Daily News
- Photos: Lake Loramie Fall Harvest Festival held Sidney Daily News
- Zinnias bring butterflies to Lake Loramie State Park Sidney Daily News
- New Lake Loramie Welcome Center opens Sidney Daily News
- Lake Loramie Harvest Festival Sidney Daily News
- Kiwanis hears about Lake Loramie, Sidney parks - Sidney Daily News Sidney Daily News
- Old time fun at the Lake Loramie Harvest Festival Sidney Daily News
Towns and ZIP codes around Lake Loramie
Water, health, jobs and history for the places on the shores and just downstream.
Towns
ZIP codes
Questions
When was Lake Loramie built?
The reservoir was built in 1844-45 by the state of Ohio's Board of Public Works, impounding Loramie Creek behind an earthen dam to feed water into the Miami & Erie Canal's summit level.
Where does the name Lake Loramie come from?
It comes from Pierre-Louis de Lorimier, a French-Canadian fur trader who established a trading post at the mouth of Loramie Creek around 1769, decades before either the fort or the reservoir existed on the same site.
What was Fort Loramie before it was Lake Loramie?
The village at the reservoir's south end was originally platted as Berlin by German settlers, incorporated in 1889 as Loramies Village, then formally renamed Fort Loramie around 1911-1912, honoring the same 18th-century trader.
How big is Lake Loramie?
Park literature commonly cites about 1,655 acres of lake surface, though the National Inventory of Dams measures the normal-pool surface area at 629 acres; the two figures likely describe different pools or measurement methods.
Is Lake Loramie a high-hazard dam?
Yes. Before a 2016-2018 rebuild it was rated Class I, high hazard; the state replaced the spillway with a labyrinth weir and floodwall at a cost of $5.8 million, completed in June 2018.
Did a fort really stand under or beside Lake Loramie?
Yes. Fort Loramie, built in 1795 on the site of the destroyed trading post, marked a boundary point on the Treaty of Greenville line. Researchers rediscovered its north stockade wall on a nearby farm in 2021.