In the muggy summer environment, a complex of showers and thunderstorms formed during the evening hours in central Ohio.  The individual cells moved southeast.  Repetitive showers hit a small portion of eastern Perry County and western Morgan County.
Maximum rain estimates were on the order of 3 to 3.5 inches in around 4 hours from 2200E on the 8th through about 0200E on the 9th.   Measured amounts from 2 gauges around New Lexington had 2.2 inches of rain.
A new round of convection formed during the mid and late afternoon and moved into southeastern Ohio after 1600E.  This caused a second round of high water.  The combined effects brought Duck Creek and the Little Muskingum River in Washington County over its banks.   The second round also helped cause the lower reaches of Sunday Creek to cause some minor flooding in Athens County.
One unofficial measurement from a spotter located 4 miles northwest of Corning had a 30 hour total of 6.25 inches of rain from the afternoon of the 8th into the evening on the 9th.

Flash Flood in PERRY, OHIO
From 09-JUL-13 00:20:00 to 09-JUL-13 09:15:00 (EST-5)
Location: JUNCTION CITY
Flood cause: Heavy Rain
Property damage: 350.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Small stream flooding occurred.
The rainfall maximum affected the headwaters of Sunday Creek and Moxahala Creek. The water from Sunday Creek drained south through Corning, causing a dozen evacuations in town.  The water was 4 feet over Route 13 in Corning.  The water from Moxahala Creek flowed north and northeast.  Its waters rose rapidly and flooded portions of Crooksville.  Around 16 units of an apartment complex called Village Green was flooded.  Water was as much as 3 feet deep.  Also in Crooksville, a mobile home park and some homes along China Street were flooded.   Around 15 people were evacuated in Crooksville.

Flood in WASHINGTON, OHIO
From 09-JUL-13 23:00:00 to 11-JUL-13 23:00:00 (EST-5)
Location: WARNER
Flood cause: Heavy Rain
Property damage: 40.00K
Crop damage: 0.00K
Reported by: Emergency Manager

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.

Flood in WASHINGTON, OHIO
From 10-JUL-13 03:00:00 to 10-JUL-13 22:00:00 (EST-5)
Location: BLOOMFIELD
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Little Muskingum River crested on the 10th around 21.3 feet at the gauge near Bloomfield.  Bankfull is around 16 feet.
Roads were blocked, including the intersection of Route 26 and 260.

Flash Flood in PERRY, OHIO
From 09-JUL-13 18:30:00 to 09-JUL-13 19:45:00 (EST-5)
Location: NEW LEXINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

The second round of convection brought some additional flooding.   Some evacuations were being attempted along the headwaters of Moxhhala Creek along Biddison Road.

Flash Flood in MORGAN, OHIO
From 09-JUL-13 07:15:00 to 09-JUL-13 09:15:00 (EST-5)
Location: DEAVERTOWN
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous roads were flooded, mainly over the headwaters of Wolf Creek.  One example was along Buck Run.

Flood in ATHENS, OHIO
From 09-JUL-13 21:00:00 to 10-JUL-13 06:00:00 (EST-5)
Location: GLOUSTER
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Late on the 9th, Sunday Creek crested at Glouster between 15 and 16 feet.
Route 13 north of Glouster and its intersection with Route 329 in Trimble were flooded and closed.