C.J. Brown Reservoir

At a glance

Before the lake

Buck Creek drains 82 square miles of Clark County farmland before reaching Springfield. The valley the reservoir now covers was rural rather than a town: by the 1870s the land was held by "mostly a half dozen landholders, generally staying within the same families," an arrangement that lasted into the 20th century. The area had been settled around 1795-1799 by families from Virginia, Pennsylvania, and New England, and it had been Shawnee territory before that, in a stretch of Ohio close to the 1780 Battle of Piqua and the 1795 Treaty of Greenville, though that older history is only lightly documented here.

The 1875 Illustrated Historical Atlas of Clark County shows Buck Creek running directly through two adjoining Crabill-family parcels — more than 460 acres between them — right at the Moorefield-Springfield township line, exactly where the dam sits today. Neighboring names on that plate — Jackson, Hough, Anderson, Foley, Marsh, Reed, Fox, Culp, Grube, Brubaker — are the same families whose land the Corps would buy up nearly a century later. Two small settlements, Moorfield and Bowlusville, and a crossroads called Union sat in the township as well.

The one structure that survived is the Crabill Homestead, built in 1813 by David Crabill, a War of 1812 veteran and a founding member of Clark County. It's a rare case among Ohio's federal flood-control lakes of a pre-dam building kept in place rather than removed: it sits inside the reservoir's footprint, is listed on the National Register of Historic Places, and was leased and restored starting in 1975 by the Clark County Historical Society before the George Rogers Clark Heritage Association formally acquired it in 2010.

Building the dam

Springfield had wanted a dam on Buck Creek for more than 40 years before one was built. After the 1924 flood, city officials first floated a site near New Moorefield. The Springfield Conservancy District revived the idea in 1933. Neither went anywhere until Congress authorized the project — then called the Buck Creek Dam and Reservoir — for flood protection in the Mad River Valley above Huffman Dam, under the Flood Control Act approved October 23, 1962 (Public Law 87-874). Recreation was added as a purpose under the 1946 Flood Control Act and a 1946 Senate document, and water-quality control was added under the Water Pollution Control Act of 1961. The project was folded into the older, broader Whitewater-Miami-Ohio River valleys flood-protection plan adopted in 1938 — the same comprehensive plan, decades earlier, that produced the Miami Conservancy District's Huffman Dam protecting Dayton.

The dam was pushed through Congress by U.S. Rep. Clarence J. Brown, and it was later named for him by a bipartisan House resolution. Brown had been Ohio's lieutenant governor (1919-1923) and secretary of state (1927-1933) before 26 years in the U.S. House. He died in 1965, the year before construction broke ground, so he never saw the project he championed completed. His House seat passed directly to his son, Clarence J. "Bud" Brown Jr., who won a special election that same year, 1965, and held the seat until 1982-83. The federal authorization had already cleared Congress in 1962, three years before Brown Sr.'s death, so the one-year gap between his son taking office and groundbreaking is most plausibly ordinary Army Corps design-and-appropriations timing rather than a grieving family pushing the project through — but it is a striking coincidence that a House seat and a namesake dam both changed hands within a year of the same death.

The Army Corps began construction in September 1966 and finished the main structure in fall 1973. The gates closed on January 2, 1974, and the lake was held at roughly 1,000 acres through the summer of 1974 while crews built a beach and shaped channels and islands at the north end. It reached full seasonal pool by spring 1975, then was drawn down again in fall 1979 to build the marina and place 16 piling groups for fish habitat.

Land taking continued well after construction started. The 1975 Final Environmental Impact Statement puts the fee acquisition at 4,126 acres, plus a flowage easement on a further 143 acres, and gives the project's actual human cost in a single sentence: "Forty-one private residences were affected by acquisition of project lands." Relocated residents received resettlement allowances, farm and business dislocation payments, help with higher mortgage interest rates on replacement homes, and rebates of prepaid property taxes, on top of payment for the property itself. Today's current fee acreage stands at 4,250.43 acres.

Two cemeteries were cleared for the project and their remains reburied at Moorefield Township Cemetery, just north of the reservoir: the cemetery tied to the c. 1830 Crabill house — cleared by the project itself in the early-to-mid 1970s, well before the Historical Society's later preservation work on the house — and the separate Foley Family Cemetery. A 1961 U.S. Geological Survey topographic map of the valley, made before the dam, also shows a New York Central rail line running up the valley floor, sand and gravel pits and an unnamed cemetery near the dam site, and Foley Cem east of New Moorefield — a last look at the pre-dam landscape.

Stories

The farmer who took the Corps to the Sixth Circuit

Not every landowner sold quietly. The United States took William Ervin's 366.80 acres — about 9 percent of the project's total fee acreage — on October 31, 1967, "as part of a condemnation action for the building of a project known as the Buck Creek Reservoir." A jury in the U.S. District Court for the Southern District of Ohio awarded him $280,000, which he thought was too low. He wanted the jury to also hear what the Corps had paid his neighbor, Paul Deer, whose farm an eighth of a mile away the government had bought in September 1968 without a lawsuit, "under threat of condemnation for the same project." When Ervin subpoenaed the Louisville District's real estate chief for the Deer sale records, the trial judge quashed it. In 1971 the U.S. Court of Appeals for the Sixth Circuit agreed Ervin deserved to put that comparison before a jury and ordered a new trial (United States v. 691.81 Acres of Land, More or Less, Situate in Clark County, State of Ohio, and William Ervin, 443 F.2d 461). How the retrial came out isn't recorded in any source found for this page.

A congressman who never saw it, a seat that passed to his son

Rep. Clarence J. Brown died in 1965; construction on the dam that carries his name started the following year. His son won the House seat in a special election the same year his father died — a tidy, if probably coincidental, overlap between a namesake dam breaking ground and a political dynasty passing to the next generation.

Mr. Krabs' grandfather has a reservoir

The Brown family's best-known modern member never ran for office. Clancy Brown, born Clarence J. Brown III in Urbana in 1959, is the voice of Mr. Krabs in SpongeBob SquarePants and of Surtur in Thor: Ragnarok. He's the grandson of the congressman the dam is named for and the son of Bud Brown Jr.; he was seven when the family moved to Washington, D.C. after his father's 1965 election, and chose acting over politics.

The homestead that stayed, and the cemeteries that moved

While the project took roughly 2,120 acres of farmland for the pool itself, the 1813 Crabill Homestead survived inside the reservoir's footprint and is preserved today as a National Register site. Two burial grounds weren't as fortunate: the cemetery tied to the Crabill house and the separate Foley Family Cemetery both sat on land the project took, and by the Corps' own account "all human remains from both cemeteries were reportedly exhumed and buried at the Moorefield Township Cemetery just north of the project."

The man, the mud, and the dog

In September 2016 a man working on a duck blind sank waist-deep into reservoir mud, and the water was too shallow for rescue boats to reach him. An ODNR watercraft officer crawled out to him on his belly through the mud, and the man's own dog carried a rope out to him so he could pull himself ashore (WHIO).

A dam still being watched

Unlike most of the finished, closed-book stories at Ohio's federal flood-control lakes, C.J. Brown's is not over. The federal dam-safety database has listed the dam as "Under Investigation, Planning, Permitting, or Design for Remediation" since at least October 2015 — a live status, still open a decade later. See "The lake since," below.

The lake since

The most unusual thing about C.J. Brown Dam, compared with other federal dams in this region, is a federal dam-safety flag that has stayed open for a decade. The National Inventory of Dams lists the dam's operational status as "Under Investigation, Planning, Permitting, or Design for Remediation," with a status date of October 28, 2015 — in plain terms, a recognized dam-safety deficiency that is under active study or design for a fix, with temporary risk-reduction measures possibly in place, but not an imminent-failure emergency. By contrast, William H. Harsha Dam downriver carries a "Normal Operations" status.

What the deficiency actually is has not been published anywhere found for this page. The Corps' own 2020 Master Plan explicitly excludes dam, spillway, and outlet-works operation and maintenance from its scope and never mentions seepage, remediation, or dam-safety deficiencies. It does confirm the Corps keeps active hands-on attention on the structure: a DVIDS photo record from April 24, 2024 documents a dam conduit inspection by the Louisville District's dam safety and structural engineering sections. Federal contract records from 2008 to 2025 show a run of routine-to-significant upkeep — outlet-conduit repair and riprap overlays in 2008, a second riprap overlay in 2014, hydraulic-cylinder and gate-indicator work in 2014 and 2017, sluice-gate corrosion repair in 2021, spillway work in 2023, and stilling-basin concrete repair in 2025 — but no large-scale seepage or foundation remediation contract.

The best lead on the underlying cause comes from the 1975 Final Environmental Impact Statement itself. A public-comment appendix preserves a reviewer's pointed critique of the draft's geology and subsurface-investigation chapter, asking "Will there be any groundwater seepage into the toe of the dam? Will this aspect be monitored?" and disputing the draft's claim that a clay-till cutoff would reliably control seepage, since the reviewer doubted the underlying till layer was proven continuous under the dam site. It's a genuine, documented 1975-era concern about exactly the kind of seepage and foundation issue the modern NID category covers — but nothing links that decades-old comment directly to the 2015 flag, and it should be read as the strongest lead found, not a resolution.

Away from the dam itself, the lake's record since completion includes recurring bacteria advisories and a string of incidents typical of a busy state-park lake: beach closures for E. coli contamination in 2015, 2016, 2020, and 2023 (no harmful-algal-bloom advisory has been reported here, unlike some other Ohio lakes); a several-day marina closure in May 2023 after an unidentified substance appeared on the water, contained with booms while Ohio EPA and local fire departments responded; a sunken ODNR patrol boat at the marina dock in 2014; a fatal 2019 jet-ski accident and a 2020 beach drowning; the January 2020 recovery of a missing Dayton woman from the lake; a 2019 fatal deputy-involved shooting near the visitor center; vehicles driven into the water in 2019 and 2025; and a 2023 boat-motor explosion. The original marina building was demolished in 2024 after reaching the end of its useful life, and a new 2,528-square-foot marina and nature center opened in October 2025 with Gov. Mike DeWine and ODNR Director Mary Mertz on hand for the ribbon-cutting.

The water

C.J. Brown Reservoir's authorized purposes are flood control, recreation, and water-quality control. Whether it also serves as a drinking-water source is genuinely unsettled in the public record: the National Inventory of Dams' purposes field for the dam lists flood risk reduction, recreation, and "other" — water supply is not among them. Yet the Corps' own 2020 Master Plan states in its project-purpose section that "the lake provides water supply storage and operates to increase natural low-flow conditions downstream of the dam in the interest of water quality control," language that reads more like boilerplate repeated across many Corps lake master plans than a specific claim about Springfield's water system. A separate, smaller impoundment, Lake Springfield, may be the city's actual municipal source, though that hasn't been confirmed here either.

Buck Creek itself drains 82 square miles of Clark County into the Great Miami River basin. Fish and recreation use include walleye, white bass, and crappie, and the reservoir is one of nine Ohio lakes stocked each fall with 10-12 inch muskellunge from state hatcheries. Water levels are tracked continuously by the Army Corps' CWMS system at the CJBrown gauge location, with a public pool-elevation and inflow/outflow record running from January 1, 2002, to the present; the record's high was 1,015.63 ft on January 14, 2005 and its low was 1,003.87 ft on February 8, 2006, a low point that sat inside an unusual extended drawdown running from roughly late 2005 into early 2006, about five feet below the normal winter pool line — its cause hasn't been identified. Two U.S. Geological Survey gauges also track the creek: 03268100, just below the dam, and 03269000, downstream at Springfield.

Sources

• Clarence J. Brown Dam and Reservoir Master Plan (2020), USACE Louisville District
• Final Environmental Impact Statement, Clarence J. Brown Dam and Reservoir (1975), USACE
• Buck Creek State Park, Wikipedia
• Clarence J. Brown Dam and Reservoir, Outdoorsy guide
• National Inventory of Dams
• USACE Great Lakes and Ohio River Division project page, C.J. Brown Dam and Reservoir
• USGS 03268100, Buck Creek bl CJ Brown Reservoir nr Springfield OH
• USGS 03269000, Buck Creek at Springfield OH
• United States v. 691.81 Acres of Land ... and William Ervin, 443 F.2d 461 (6th Cir. 1971)
• Health of Clark, Champaign County waterways key to safety, economy, Springfield News-Sun
• Clancy Brown profile, Springfield News-Sun
• Louisville District conducts dam conduit inspection at C.J. Brown Dam & Reservoir, DVIDS
• Rescuer reaches man stuck in mud at Buck Creek State Park, WHIO
• Families flock to Buck Creek despite water contamination advisory, WHIO
• Buck Creek Marina closed as crews clean up 'unidentified substance' in water, WHIO
• High bacteria levels reported at Buck Creek reservoir, WHIO
• Governor DeWine and ODNR Open New Marina and Nature Center at Buck Creek State Park
• Muskies Stocked in Select Ohio Lakes Provide Excellent Fishing, ODNR
• C.J. Brown Reservoir, Kayaking Across Ohio (blog trip report)
• Illustrated Historical Atlas of Clark County, Ohio (1875), Clark County Public Library