Ohio lakes · Mahoning County, Portage County, Stark County
Berlin Lake
Berlin Lake's dam, finished in 1943 after the 1913 Mahoning flood, holds 3,590 acres and still supplies Alliance's drinking water.
- Built 1943
- 3,590 acres
- Mahoning River
- U.S. Army Corps of Engineers, Pittsburgh District
At a glance
| Fact | Value |
|---|---|
| Built | 1941-1943 (full operations June 1943) |
| Authorization | Flood Control Act of 1938 |
| Dam type | Concrete gravity spillway section flanked by earth embankments |
| Dam height | 94-96 ft |
| Dam crest length | 5,750 ft |
| Conservation pool | 3,590 acres, 70 miles of shoreline |
| Maximum (flood) pool | About 5,500 acres |
| Storage | 58,400 acre-feet normal, 140,000 acre-feet maximum |
| Drainage area | 249 square miles |
| Operator | U.S. Army Corps of Engineers, Pittsburgh District |
| Stream | Mahoning River |
| Counties | Mahoning, Portage, Stark |
| Recreation area | Mill Creek Recreation Area |
| Record pool (2016-2026) | Low 1,012.84 ft (Oct. 22, 2017); high 1,030.81 ft (June 21, 2019) |
Before the lake
The Mahoning River valley around Deerfield and Berlin Center was farmland threaded through mature hardwood forest before the dam. One family's recollection, passed down and later posted online, describes limestone cliffs along Mill Creek marked with glacial striations and fossils, and a popular swimming hole on the Kirkbride family's stretch of the river deep enough to dive from a boulder — details from a single account, not independently confirmed, but specific enough to be a real lead rather than generic scene-setting (strongspage.com).
Berlin Center itself, on high ground east of the lake, got its start as a post office named "Berlin Centre" in 1833, taking its name from Berlin Township — itself named by early German settlers after their homeland, long before either World War made "Berlin" a loaded word. By 1907 the community had about 60 residents (Wikipedia).
A 1860 Mahoning County atlas of Milton Township, read directly off the original survey plates, names dozens of farm families whose land sat along the river corridor the lake now covers: J. H. Vaughn, Alex Scott, Geo Ormsby, S. Davison, B. J. Jones, H. Patterson, J. McKenzie, Jas. Davis, Carson & Patterson (64 acres on a river bend), Wm. Force, Jos. Lingo, J. & G. Forder (147 and 150 acres across two sections), M. Ketro, and more — the Berlin village site itself also appears on the same plate.
The Mahoning River's industrial role predates the dam by decades. Steel and iron mills in the Youngstown-Warren corridor built their own low-head dams to secure cooling water, and Youngstown bought land upstream in Milton Township as early as 1917-1918 for the first large impoundment (Milton Dam), built explicitly to keep river flow high enough, year-round, for mill cooling water. Berlin inherited and formalized this same low-flow-augmentation role two decades later, under federal flood-control authority (Wikipedia, "Mahoning River").
Building the dam
The catalyst was the Great Easter Flood of March 23-27, 1913, which put the entire Mahoning valley underwater. In Youngstown it knocked out water, electric, streetcar and rail service, collapsed two bridges, and flooded the Brier Hill Steel Co., the Ohio Works of Carnegie Steel, and Youngstown Sheet & Tube — an estimated $2.5 million in damage in Youngstown alone. Warren's Main Street flooded to street level and the city was cut off from outside communication (Vindicator archives). That flood is the explicitly named reason Ohio's later Mahoning-basin reservoir system — Berlin (1941-43), Kirwan/West Branch (1963-66), Mosquito Creek (1943-44), and Pennsylvania's Shenango (1963-67) — was built to withstand a recurrence.
Congress authorized the project under the Flood Control Act of June 28, 1938. One account, not corroborated against the Congressional Record, credits U.S. Representative Michael J. Kirwan of Youngstown with securing the funding — an irony if true, since the reservoir immediately upstream of Berlin on the West Branch of the Mahoning is itself named for Kirwan two decades later (strongspage.com).
Engineering came first, before the earthwork was even finished. The Pittsburgh District requested a hydraulic model study of the spillway in December 1941; the U.S. Waterways Experiment Station in Vicksburg, Mississippi built and tested a 1:48-scale model from January to April 1942, and published its 92,000-word final report on November 1, 1942 — while construction, begun in 1941, was still underway. The model found the original stilling-basin design unsatisfactory and led to a "type 9" basin with a 4-foot stepped end sill and a secondary stilling weir 700 feet downstream, adequate up to the design maximum of 79,000 cubic feet per second. The dam reached full operations by June 1943.
Land acquisition ran to 7,984.95 acres in total — 6,885.29 acres bought outright, 1,099.66 acres taken by flowage easement — but no primary record of individual families, a cemetery count, or total compensation has surfaced. One family's account, describing themselves as the "McEldowney" farm across Mill Creek from a former Lazarus grist mill, says about 35 acres were taken by easement, leaving the rest of the farm unviable to keep working; that the Corps' initial offers were "very low" and then cut roughly in half for budget reasons; and that most affected landowners ended up suing in federal court in Cleveland to reach acceptable settlements. The same account describes being cut off by rising water and construction, reduced to rowing and then chopping through lake ice to reach their own home while water seeped in and they waited on their settlement before they could move. This is a single, uncorroborated source, though its broad shape — low initial offers, litigation as the normal remedy, hardship for families still on the land — matches how other 1930s-40s Corps flood-control takings in Ohio are documented elsewhere (strongspage.com).
No village or hamlet is documented as wholly relocated or flooded by Berlin Lake; Berlin Center and Deerfield both sit above the pool and survived as towns. Whether a cemetery fell inside the taking line has not been established either way.
Stories
The 5 inches of rain that never fell
During the 2012 drought, a Corps hydraulic engineer calculated exactly what it would take to refill Berlin Lake from an 8-foot deficit to its normal summer pool: 5 inches of rain across the entire 249-square-mile watershed in a single day — more than the remnants of Hurricane Ivan dropped on the region in September 2004, the local rainfall record. It never came. By July the lake had hit its lowest level since 1991, receding roughly 3 inches a day, and boat traffic fell to about 10 percent of normal. Les' Bait & Tackle Marina reported a 70 percent revenue loss, Spillway Marine Sales was down 35-40 percent, and Ben's Restaurant was down 50 percent year over year — Berlin was hit harder than any of the Corps' other Mahoning/Shenango valley lakes that summer (Vindicator archives).
A doctor's boat and a fatal collision
On May 9, 2015, a speedboat driven by Dr. Joseph Yurich, a Poland, Ohio surgeon, collided at high speed with a fishing boat carrying two Akron-area anglers, killing one man and injuring the other. The case didn't reach trial until 2017, when Yurich faced charges including aggravated vehicular homicide and operating a watercraft while impaired — one of the few Berlin Lake incidents to generate sustained, multi-year news coverage (Vindicator archives, follow-up).
Drownings in the non-swimming water
Two fatal drownings are documented near the Mill Creek Recreation Area: a 5-year-old girl from Lisbon drowned on July 21, 2004 after stepping into water over her head in a non-swimming area, and a 51-year-old Youngstown woman drowned August 1, 2010 trying to save her grandchildren from the water (2004, 2010).
Named for the old country, not the war
Berlin Center's name has nothing to do with the German capital's later Cold War notoriety — the post office took the name in 1833, decades before either World War made "Berlin" politically fraught, simply honoring the German homeland of the township's early settlers (Wikipedia).
The lake since
Shoreline management has gone through three generations of Corps policy: an initial Lakeshore Management Plan in 1977, a revision in 1989, and the current Shoreline Management Plan dating to 2008 (2008 SMP). By one Corps estimate, the reservoir system has prevented an estimated $2.6 billion in flood damages, though an earlier Corps summary put the figure at $1.7 billion — likely different report years, not reconciled here.
The Youngstown steel industry's collapse from the late 1960s through the 1980s, culminating in "Black Monday" on September 19, 1977, removed much of the original rationale for the low-flow-augmentation purpose the lake was partly built to serve, though its flood-control and recreation roles continued unchanged.
The Berlin Lake Association, a local users' group, has met with Corps representatives on shoreline access questions, including a 2015 discussion of a new gate at the Watson Road access point (Vindicator archives; Berlin Lake Association).
Federal law requires the Corps to protect cultural resources, and the 2008 Shoreline Management Plan records that prehistoric and historic archaeological sites have turned up along the shoreline, though only a small share of it has ever been surveyed and none of the known sites had been formally evaluated for the National Register as of that document. A dedicated academic survey, "Archaeological survey of the Berlin Lake Reservoir Coast, Mahoning, Portage, and Stark Counties, Ohio," exists but has not been read in full (academia.edu).
The water
The City of Alliance leases 367 acres of Berlin Lake project land for a sub-impoundment called Deer Creek Dam, built by the city under agreement with the Army for domestic water supply to nearby communities. Berlin Lake itself is also credited with providing downstream communities a clean, dependable water supply and helping alleviate pollution problems along the Mahoning River valley.
The watershed drains 249 square miles across Columbiana, Mahoning, Portage and Stark counties. Major tributaries include Mill Creek, the Mahoning River main stem above the pool, and Willow Creek, and the lake sits directly downstream of the Kirwan Reservoir sub-basin, so Kirwan's regulated releases feed Berlin's inflow.
Water-column monitoring is unusually thorough for a mid-size Corps lake: a 10-node vertical temperature-profile buoy string tracks the water column from the surface to 72 feet deep, evidence of active thermal-stratification monitoring likely tied to managing release temperatures downstream. A 2001 news item recommended eating channel catfish from the lake no more than once a month, the one dated fish-consumption data point found.
Documented sport fish include largemouth and smallmouth bass, white bass, walleye, white and black crappie, bluegill, channel catfish, brown bullhead and muskellunge. Berlin is notable among northeast Ohio reservoirs as one of the few lakes in the region where walleye reproduce naturally rather than relying entirely on stocking.
The full USGS pool record since 2016 ranges from a low of 1,012.84 feet on October 22, 2017 to a high of 1,030.81 feet on June 21, 2019, with a mean of 1,020.00 feet. The dam has dramatically flattened the Mahoning's flood peaks at this location: the highest regulated peak discharge since 1943 is 3,050 cubic feet per second (June 22, 2019), against a highest natural pre-dam peak of 8,630 cfs on January 25, 1937.
Sources
- USACE Berlin Lake project page
- Wikipedia: Berlin Center, Ohio
- Wikipedia: Mahoning River
- Vindicator archives: 1913 Mahoning flood retrospective
- Vindicator archives: 2012 drought, 21-year low
- Vindicator archives: 2004 drowning
- Vindicator archives: 2010 drowning
- Vindicator archives: 2017 boat-collision trial
- Vindicator archives: 2017 trial follow-up
- Vindicator archives: Berlin Lake Association, 2015
- Berlin Lake Association
- strongspage.com: Berlin Lake history
- Archaeological survey of the Berlin Lake Reservoir Coast
Timeline
40 dated newspaper stories, reports and records about Berlin Lake, 1913 to 2024, each linked to its source.
Show all 40
- Epic 1913 Mahoning River flood cast wide net of destruction Youngstown Vindicator
- Years Ago for December 20 (1942 item) Youngstown Vindicator
- Years ago for April 9 (1943 item) Youngstown Vindicator
- Years Ago for July 20 (1979 item) Youngstown Vindicator
- 5-year-old drowns in Berlin Reservoir Youngstown Vindicator
- Officials probe death of woman at Berlin Lake Youngstown Vindicator
- Agency testing Berlin Lake 'scum' for toxicity Canton Repository
- Christmas trees put in Berlin to help lure fish The Review
- Canton man dies while swimming in Berlin Reservoir Canton Repository
- Water levels in Berlin Lake sink to 21-year low Youngstown Vindicator
- Man killed in Berlin Lake boat crash The Review
- ODNR places fish concentration devices at Berlin and Tappan The Review
- Berlin Lake Association meets Wednesday Youngstown Vindicator
- Doctor charged in fatal Berlin Lake accident to face jury in October The Review
- FBI to search Berlin Lake wildlife area in connection with two 1994 murders The Review / Ravenna Record-Courier
- Doctor charged in connection with Berlin Lake boating accident has trial continued The Review
- Nature has a way of keeping balance Youngstown Vindicator
- Berlin Lake Association to hold meeting today The Review
- New Berlin Reservoir ramp unveiled The Review
- Death of man found in Berlin Lake ruled a homicide Youngstown Vindicator
- Man on boat involved in fatal Berlin Lake collision recalls crash Youngstown Vindicator
- Dr. Yurich's wife recalls night of boat crash Youngstown Vindicator
- Police searching for clues on murdered man found in Berlin Lake Cleveland 19
- State medical board to consider disciplinary action against Dr. Yurich of Poland Youngstown Vindicator
- Second attack reported on Berlin Lake Trail Canton Repository / Ravenna Record-Courier
- New $1.3 million boat ramp now useless at Berlin reservoir The Review
- Bald eagle pair highlight of Berlin Lake summer Youngstown Vindicator
- DNA pins Berlin Lake trail rapes on Pennsylvania man The Review / Ravenna Record-Courier
- Sheriff: Berlin Lake trail rape suspect captured The Review / Ravenna Record-Courier
- Ex-Canton man held on $1M bond, accused of rape on Berlin Lake Trail The Review / Ravenna Record-Courier
- Suspect indicted in rapes along Berlin Lake Trail The Review / Ravenna Record-Courier
- Federal money to upgrade reservoirs' water control plans Youngstown Vindicator
- Berlin water levels could be kept higher The Review / Canton Repository
- Berlin Lake campground has more than $1M makover Youngstown Vindicator
- Hoping for renewal at Berlin Lake The Review / Canton Repository
- Corps to Open Select Facilities at Recreation Sites USACE Pittsburgh District via DVIDS
- Army Corps of Engineers Announces Reopening Dates of Recreation Sites USACE Pittsburgh District via DVIDS
- Berlin Lake seeks public input on master plan updates USACE Pittsburgh District via DVIDS
- Headwaters Highlight: Rangers welcome bird watchers to Berlin Lake as a growing birding hotspot USACE Pittsburgh District via DVIDS
- Legacy of love: How one man continues to volunteer in honor of his late wife USACE Pittsburgh District via DVIDS
Towns and ZIP codes around Berlin Lake
Water, health, jobs and history for the places on the shores and just downstream.
Towns
ZIP codes
Questions
When was Berlin Lake built?
Construction began in 1941 and the dam reached full operations by June 1943, under the Flood Control Act of 1938.
Why was Berlin Lake built?
It was built for flood control after the devastating Mahoning River flood of March 1913, along with low-flow augmentation for downstream steel mills, water supply, and recreation.
How big is Berlin Lake?
At conservation pool it covers 3,590 acres with 70 miles of shoreline; at maximum flood pool it can grow to about 5,500 acres.
Is Berlin Lake a source of drinking water?
Yes. The City of Alliance leases 367 acres of the project for a sub-impoundment called Deer Creek Dam, which supplies domestic water to nearby communities.
What towns are underwater at Berlin Lake?
No whole town or village is documented as flooded by Berlin Lake, but dozens of 1860s Milton Township farm families along the Mahoning River corridor lost land, and a family remembered locally as the McEldowneys describes losing their farm to the project.
How was Berlin Lake affected by the 2012 drought?
By July 2012 the lake had fallen 8 feet below normal summer pool, its lowest since 1991, and a Corps engineer said it would take 5 inches of rain across the entire watershed in a single day to refill it.