A prolonged heavy rainfall event with slow-moving boundary produced significant small stream and subsequent river flooding in the mountains of southwest VA beginning overnight Sunday, April 19th. Rainfall amounts totaled 1 to 3 inches through 7:00AM EDT Monday, April 20th with isolated amounts up to 4 inches (4.00 measured at Galax, VA Water Plant COOP). Severe weather broke out later in the day on Monday. Heavy rain (2-2 �� inches) fell in one hour in Wythe County, VA Monday evening causing flash flooding and road washouts. One of the more impressive stream responses occurred on Reed Creek in Wythe County where the gage at Grahams Forge (GRHV2) crested at 9.14 feet (discharge of 11600 cfs) on the afternoon of the 20th (Flood Stage = 7 feet). This was the 2nd highest stage since continuous records began there in the late 1920s and in terms of flood frequency equates to roughly a 33-year event (Annual Exceedance Probability, AEP of 0.03) per the latest USGS Flood Frequency Report. The highest stage recorded at this gage occurred in April 1977 at 10.01 feet during a period of major flooding in southwest Virginia. Local emergency management official said the flooding was ���historic��� in that area. Over 50 roads were reported to have been closed in Wythe County by flood waters during the event with substantial road damage.

Flood in SMYTH, VIRGINIA
From 20-APR-15 07:42:00 to 20-APR-15 19:42:00 (EST-5)
Location: THOMAS BRIDGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Creek and stream flooding was reported along portions of the South Fork of the Holston River watershed. A road was closed in the Thomas Bridge area.

Flood in SMYTH, VIRGINIA
From 19-APR-15 23:33:00 to 20-APR-15 12:00:00 (EST-5)
Location: SUGAR GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flat Ridge Road in Sugar Grove was reported to be flooded and closed by the South Fork Holston River.

Flood in WYTHE, VIRGINIA
From 19-APR-15 18:00:00 to 20-APR-15 12:00:00 (EST-5)
Location: CEDAR SPGS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rains led to the closure of numerous roads across Wythe County. Among the roads closed were Glade Road, Reed Creek Drive, Kents Lane, Ramsey Mountain Road, Francis Mill Road, Cedar Springs Road, Dry Road, Ridge Avenue, Atkins Mill Road at Muskrat Road, Brea Road, Church and Baumgardner Roads. Stony Fork Road was also closed due to massive amounts of water in the area. A pipe under the road at the intersection of Stony Fork Road and Griffith Knob Lane collapsed, causing the road to wash away and leaving a 40-foot sinkhole in this area. There was also flood damage at the town of Wytheville Water Treatment Plant.

Flash Flood in CARROLL, VIRGINIA
From 19-APR-15 20:30:00 to 19-APR-15 21:30:00 (EST-5)
Location: CANA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

A mudslide was reported on Flower Gap Road near intersection with William Drive. Other flood reports corroborate localized flash flooding in the area.

Flash Flood in GRAYSON, VIRGINIA
From 19-APR-15 18:00:00 to 20-APR-15 03:30:00 (EST-5)
Location: REAVISTOWN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Numerous roads were closed due to water flowing across them in southeast Grayson County. Mainly along and near Gladys Fork and Chestnut Creek. The USGS gage at Chestnut Creek in Galax (CCKV2) crested at 8.0 feet (Action stage is 6 feet) at 12 midnight (EDT).

Flash Flood in WYTHE, VIRGINIA
From 20-APR-15 17:00:00 to 20-APR-15 23:00:00 (EST-5)
Location: MAX MEADOWS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Miller Creek was reported to be out of it banks and flooding a portion of Ramsey Mountain Road.

Flash Flood in WYTHE, VIRGINIA
From 20-APR-15 17:12:00 to 20-APR-15 23:12:00 (EST-5)
Location: FT CHISWELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Water of 1-2 foot depth was reported flowing across Hagers Spring Road.

Flood in WYTHE, VIRGINIA
From 19-APR-15 20:00:00 to 20-APR-15 18:00:00 (EST-5)
Location: SIMMERMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A vehicle with one occupant was washed into Cripple Creek and found later further downstream. The creek was in flood during the overnight and morning hours of April 19-20. The exact time of the incident is unknown but was estimated byto be around 9 AM.

Flood in WYTHE, VIRGINIA
From 20-APR-15 07:40:00 to 20-APR-15 19:40:00 (EST-5)
Location: MAX MEADOWS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Max Meadows Road was closed due to flooding from Reed Creek. The USGS river gage on Reed Creek downstream at Grahams Forge exceeded flood stage (6.5 feet) at around 8 AM and crested at 9.14 feet at around 1 PM on the 20th.

Flood in BLAND, VIRGINIA
From 19-APR-15 23:00:00 to 20-APR-15 11:00:00 (EST-5)
Location: LONG SPUR
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Little Walker Creek was reported over the road along several portions of Route 601.

Flood in BLAND, VIRGINIA
From 20-APR-15 07:42:00 to 20-APR-15 19:42:00 (EST-5)
Location: HOLLY BROOK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Flooding most likely from Nobusiness Creek was reported along Wilderness Road in the Hollybrook area.

Flood in HENRY, VIRGINIA
From 19-APR-15 20:30:00 to 20-APR-15 12:30:00 (EST-5)
Location: SANVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Flooding closed a portion of Morning Side Drive.

Flood in FRANKLIN, VIRGINIA
From 20-APR-15 01:30:00 to 20-APR-15 13:30:00 (EST-5)
Location: ROCKY MT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

One road was closed due to flooding. Location uncertain but could have been Furnace Creek flooding.