| June 1998 | Flash Flood | Countywide | 1 killed, $10,000,000 | no account filed |
| April 2024 | Flood | Grandview | 1 killed | The Ohio River gauge at Willow Island Lock rose above its flood stage on the morning of April 3rd, then reached a crest of around 41.3 feet the morning of the 5th. The river then receded below flood stage the next morning. With the river spilling out of its banks, water inundated Ohio Route 7 in the Reno area. Ohio State Route 7, Township Road 443, and Township Road 19 at Newell Run and Lenards Landing flooded.||During the time the river was out of its banks, a 42 year old man perished after attempting to drive through the floodwaters on State Route 7 just north of Archer Fork Road. |
| July 1981 | Tornado (F2) | not stated | 5 hurt, $250,000 | no account filed |
| May 2000 | Thunderstorm Wind | Marietta | 3 hurt, $45,000 | A double wide mobile home was destroyed after its roof was blown off. The home was located on Warren Township Road 277. Seven people were in the home at the time, 3 were taken to the hospital with minor injuries and later released. The National Weather Service survey estimated winds of 60 to 70 mph from the microburst. |
| June 2001 | Lightning | Watertown | 2 hurt | Two men were stuck by separate lightning bolts. One was in Muskingum Township, the other was from Waterford Township. They were treated and released from Marietta hospitals. |
| June 2012 | Thunderstorm Wind | Bartlett | $3,000,000 | Scattered locations throughout the county had trees or large branches blown down. Nine of the 10 power substations in the county were in the dark. Nearly 25,000 customers lost electricity. The public infrastructure damage assessment was around $975,000. |
| June 1998 | Thunderstorm Wind | Marietta | $750,000 | Numerous large trees were blown down by strong wind gusts. The wind was associated with a bow echo configuration to the thunderstorms. Wind gusts of around 70 mph likely occurred. Several homes and businesses were hit by fallen trees. Residents described the aftermath in the hardest hit portions of downtown Marietta as looking like a war zone. |
| June 2012 | Thunderstorm Wind | Marietta | $500,000 | Numerous trees and large branches were blown down. One massive tree fell onto a house along Montgomery Street. |
| March 1997 | Flash Flood | Countywide | $500,000 | no account filed |
| August 2013 | Flash Flood | Bartlett | $450,000 | Widespread flash flooding occurred across southern Washington County during the predawn hours. Widespread street flooding occurred in Belpre and Marietta with basement flooding. One resident reported 2 feet of water in their basement. ||Near the mouth of Mill Branch with the Little Hocking River, vehicles were flooded and water got into several homes. Also along the Little Hocking River, 2 cars were submerged along Oxbow Road. The water was 2 to 4 feet deep in spots. An 18 year old female from 1 of the vehicles made it safely out, but her truck was submerged in a soy bean field off the road. Minor flooding occurred in a school west of Fleming. |
| September 1990 | Tornado (F0) | not stated | $250,000 | no account filed |
| July 1990 | Tornado (F0) | not stated | $250,000 | no account filed |
| July 1973 | Tornado (F1) | not stated | $250,000 | no account filed |
| July 1971 | Tornado (F2) | not stated | $250,000 | no account filed |
| July 2003 | Thunderstorm Wind | Reno | $200,000 | Fallen trees damaged homes. Roof shingles were damaged by the wind. An outbuilding was flattened. Hundreds of trees were knocked down. |
| February 2000 | Flash Flood | Countywide | $200,000 | no account filed |
| June 1996 | Thunderstorm Wind | Marietta | $200,000 | no account filed |
| July 2010 | Flash Flood | Marietta | $150,000 | Rains of 2.5 to 4.5 inches fell in less than 3 hours. The 24 hour rain amount from the cooperative observer at Newport was 4.7 inches. The Marietta cooperative observer had 2.94 inches. Streams such as Long Run and Newell Run flooded and forced a few evacuations. Many residents were stuck in their homes. The Newport fire chief said, We couldn't get to them because they couldn't see the bridges. Basically every direction we went there was rushing water, it looked like a whitewater river.||More urban streams such as Goose Run flooded basements around Marietta. |
| June 2003 | Flash Flood | Vincent | $150,000 | Rains of 2.5 to 3 inches fell in 90 minutes or less. Roads were flooded. One vehicle was flooded by Tupper Creek. Warren Township had water into several basements. A few evacuations were required along Route 150. |
| May 2000 | Tornado (F1) | Waterford | $150,000 | The tornado occurred on County Route 32 near the old power plant in Waterford. On its one mile trek, the tornado destroyed a barn, threw a piece of wood from the barn through the wall of a house and into its kitchen, and shifted several trailers, cottages, and outbuildings off their foundations. The storm deposited roofing debris on the other side of the Muskingum River, in the town of Beverly. |
| August 1997 | Thunderstorm Wind | Belpre | $115,000 | The city's safety-service director said more than 100 trees were downed in the city. He estimated wind gusts of around 70 mph. Roofs were damaged by fallen trees. Some city residents even reported their vehicles were lifted off the pavement. |
| April 2015 | Flood | Bloomfield | $100,000 | The larger streams and headwater rivers were above bank full, closing roads. This included the Little Muskingum River at Bloomfield. The river crested around 20.4 feet during the late afternoon on the 9th, with bank full around 16 feet. The stream gauge on Duck Creek at Whipple eventually crested on the 9th around 14.4 feet. The crest at Beverly on the Muskingum River was around 31.5 feet around 0000E on the 10th. Flood stage is 29 feet. This level was the highest level, since the gauge was installed back in 2012. ||The additional rain early on the 10th, prolonged the minor flooding. Rain of 1 to 1.25 inches was common along the front. |
| June 2009 | Thunderstorm Wind | Harmer | $100,000 | Trees fell onto power lines and blocked streets. One tree fell onto a car. The roof was damaged at a home on 5th Street. Two trees toppled against a Lancaster Street house. |
| June 2002 | Lightning | Porterfield | $100,000 | An old ridgetop church on Route 3 in Decaturville burned down, after it was struck by lightning. Firefighters from 4 departments salvaged an organ and a few keepsakes of the church. |
| June 1995 | Thunderstorm Wind | Marietta | $80,000 | Thunderstorms moved from east to west crossing the Ohio River from West Virginia. The city of Marietta hauled 130 loads of fallen limbs away over a eight day cleanup period. At least two homes were damaged. A dairy barn was heavily damaged in Warren Township. A tree fell onto a car in Belpre. |
| June 2000 | Thunderstorm Wind | Devola | $60,000 | Trees and power lines were blown down, damaging at least 4 homes and 2 vehicles, in the Lower Muskingum River Valley communities of Devola, Oak Grove, and Marietta. |
| March 2015 | Flood | Coalrun | $50,000 | Many streams, including Duck Creek and the Little Muskingum River flooded and closed roads. At Whipple, Duck Creek rose 12 feet in the vertical and crested around 0100E on the 5th. Near Bloomfield, the Little Muskingum rose 20 feet and crested during the evening of the 4th. |
| June 2012 | Thunderstorm Wind | Little Hocking | $50,000 | Large trees were blown down. |
| June 2003 | Flash Flood | Belpre | $50,000 | Marietta measured 2 inches of rain in 90 minutes. In that community, cars were stranded, and a few homes received water damage. Route 618 was damaged near Belpre. |
| July 2003 | Thunderstorm Wind | Belpre | $50,000 | Trees and power lines fell, damaging roofs in town. Several streets were blocked by fallen tree branches. An F2 tornado was occurring across the Ohio River, near Lubeck in Wood County of West Virginia. |
| July 1994 | Thunderstorm Wind | W Portion | $50,000 | Trees were downed, some on power lines, in several locations. |
| July 1994 | Thunderstorm Wind | not stated | $50,000 | Trees were downed at a number of locations. |
| June 1996 | Lightning | Marietta | $50,000 | no account filed |
| May 2018 | Thunderstorm Wind | Wingett Run | $40,000 | A downburst produced intermittent wind damage across eastern Washington County. The damage began, and was most widespread around Wingett Run where one barn was destroyed and a house had minor roof damage and the glass broken out of a storm door. The damage then extended eastward to the Ohio River in New Matamoras. Hundreds of trees were uprooted or snapped and numerous power lines were taken down along the roughly 9 mile path. |
| April 2017 | Thunderstorm Wind | Fillmore | $40,000 | A National Weather Service storm survey team found damage consistent with a microburst. Many trees were damaged, snapped or uprooted along the 2.5 mile path. Three buildings suffered damage. Near the start of the microburst, along Wildwood Lake Road, the roof of a porch was ripped from a house, flipped over the top and deposited on the road. About half a mile from there, an open-sided machine shed near Welch Road had much of the tin roof ripped off. Towards the end of the path, along State Route 555, another porch was damaged by the microbust winds. |
| July 2013 | Flood | Warner | $40,000 | With repetitive rounds of showers and thunderstorms, Duck Creek rose late on the 9th and reached bankfull by the 10th. The stream gauge at Whipple crested at 16.39 feet during the evening of the 10th. Yet, the creek remained in flood through most of the 11th.||Numerous roads were blocked, including Route 821 south of Whipple and Route 145 near Lower Salem. This caused residents to seek alternate routes. One county road was damaged by the high water. One person was evacuated as a precaution, as water surrounded her house. Water from a feeder creek was 8 to 10 inches deep in a fire station.||Other creeks, like Cat Creek near Lowell, also flooded some roads. |
| October 2016 | Thunderstorm Wind | Bartlett | $25,000 | House trailer blown off foundation and rolled onto its side. |
| July 2015 | Thunderstorm Wind | Stanleyville | $25,000 | The first damage was found near Glenwood Lane where mutiple trees were damaged. The rain gutters of a house were damaged by falling tree branches. More tree damage was found along Windy Point Drive and Grant Edwards Drive. A large tree was snapped and fell onto the corner of a house causing roof damage. Damage went further east to near Sherry Drive. At least 1 vehicle was damaged. |
| November 2013 | Thunderstorm Wind | Layman | $25,000 | Straight line wind damage occurred near McDonald Road. The path was approximately 300 yards wide and three quarters of a mile long. ||A survey team estimated a maximum wind gust of 85 mph.||A home along McDonald Road had some flashing ripped off with debris logged into its siding. Debris also broke a few windows. A small section of a barn roof was blown off. An old wooden garage, that was used as storage, was shifted off its foundation after its door was blown in. ||Several trees and large branches were damaged. Some trees were snapped off. Old corn stalks were leveled in a field. |
| August 2013 | Flash Flood | Newell Run | $25,000 | Rain amounts were estimated at 1.5 to 2.5 inches across portions of eastern Washington County. On the southern fringe of the area, the cooperative observer at Newport measured 1.6 inches. ||Small streams overflowed onto roads, causing minor damage. One example was Archers Fork in the Wayne National Forest. One half of a new modular home was destroyed along Archers Fork. The home had not yet been set on its foundation. It floated down the flooded stream and smashed against a bridge. |
| July 2012 | Thunderstorm Wind | Marietta | $25,000 | Trees were blown down in the city. |
| June 1998 | Flash Flood | Coalrun | $25,000 | One house was flooded in Coal Run. One section of railroad tracks in Lowell was undermined. |
| July 1997 | Lightning | Marietta | $25,000 | The chimney and roof to the Headstart Center was damaged. The fallen bricks heavily damaged a car parked below. |
| March 2011 | Flood | Marietta | $25,000 | no account filed |
| April 2025 | Thunderstorm Wind | Little Hocking | $20,000 | A barn in Belpre was destroyed due to strong winds. An adjacent barn had its roofing peeled off in spots. |
| June 2009 | Heavy Rain | Marietta | $20,000 | Downpours associated with severe thunderstorms overwhelmed the city drainage system, causing brief street flooding. Water got into a few basements. The cooperative observer measured 2.6 inches for its 24 hour rain amount, most of which fell within about 2 hours. |
| May 2008 | Thunderstorm Wind | Belpre | $20,000 | Trees fell onto homes and power lines. |
| August 2003 | Flash Flood | Reno | $20,000 | Mill Run and Coal Run flooded. A few evacuations occurred along Coal Run. |
| June 1998 | Thunderstorm Wind | Reno | $20,000 | Bleachers and a press box at a car race track were damaged. Across Route 7, a conveyor at a car crusher business was damaged. |
| June 1995 | Thunderstorm Wind | Marietta | $20,000 | Thunderstorms moved from east to west crossing the Ohio River from West Virginia. The city of Marietta hauled 130 loads of fallen limbs away over a eight day cleanup period. At least two homes were damaged. A dairy barn was heavily damaged in Warren Township. A tree fell onto a car in Belpre. |
| June 2011 | Hail | Reno | $20,000 | no account filed |
| June 2015 | Tornado (EF0) | Bartlett | $15,000 | A brief EF0 tornado occurred off of Tullis Road, southwest of Bartlett. The estimated strongest wind gust was around 85 mph.||Several trees were uprooted and numerous large branches were snapped. One house and an outbuilding were damaged, mainly to the roof and siding. Also, a small aluminum boat was thrown from the edge of the pond, 140 yards and wrapped around a tree. |
| June 2012 | Thunderstorm Wind | Beverly | $15,000 | The village office building was damaged. |
| May 2010 | Flood | Cutler | $15,000 | Numerous roads were closed by flooded creeks. |
| February 2009 | Thunderstorm Wind | New Matamoras | $15,000 | Trees were blown down. |
| February 2009 | Thunderstorm Wind | Little Hocking | $15,000 | Trees and large branches fell onto power lines. |
| February 2000 | Flash Flood | Countywide | $15,000 | Water was 2 to 3 feet on several secondary roads. Route 26 was flooded in 4 locations. One county road had one lane washed out by the Little Muskingum River near the covered bridge at Hills. . |
| April 2026 | Thunderstorm Wind | Marietta | $12,000 | A tree and numerous branches fell onto a house along 2nd Street in Marietta. Extensive damage to the home occurred as a result. |
| April 2024 | Flood | Relief | $10,000 | The Muskingum River at Beverly rose above its flood stage on the evening of April 2nd. The river crested to around 34.7 feet the following morning and then returned below flood stage on the morning of the 4th. While the river spilled out of its banks, several areas near the river flooded, as did farmland and several sections of Route 60. |
| June 2021 | Thunderstorm Wind | Schley | $10,000 | Several trees were blown down on Bear Run Road, County Road 12, and County Road 14. |
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![[Map of W. Dall's lots in Athens County, Washington County, and Gallia County, Ohio], Boston Public Library - undated](assets/dpla_f40f88860d51649d.jpg)
