Several waves of low pressure moved across the area as an upper level low closed off over the southeastern U.S. Signiifcant rainfall began early on April 22nd over far southwest Virginia and the rainfall persisted on and off over the next four days with mainly moderate rates (0.10��� to 0.25��� per hour) as the upper low drifted very slowly eastward from the lower Mississippi Valley toward the southeastern states. 24-hour totals ending 12z (0700 EST) on the 23rd ranged from less than 0.50 inches over the James River basin up to 1.25��� to 1.75��� across parts of the Roanoke, New and Dan basins.  The heaviest rains April 23-24 fell across the western and central river basins with amounts  ranging from 2 to 5 inches. Another 1 to 3 inches with isolated higher amounts fell mainly across the foothills and piedmont in the next 24-hours. Storm total rainfall for the four-day period ending at 12z (0700 EST) on the 25th ranged from 3 to 9+ inches with highest amounts in parts of the Blue Ridge mountains and foothills in Patrick, Carroll and Henry counties. Busted Rock #2 IFLOWS (BUEV2) led the way with 9.53 over the 4-day period. Widespread small stream flooding resulted with numerous larger rivers that approached or exceeded flood stage including portions of the Clinch, New, Roanoke and Dan rivers. Return frequency intervals for the flooding were generally in the 5-year to 10-year range (0.20-0.10 annual exceedance probability), but close to 20-year (0.05 AEP) in the lower Dan River. Numerous roads were closed by flooding in at least a dozen counties.

Flood in DANVILLE (C), VIRGINIA
From 24-APR-17 06:00:00 to 27-APR-17 12:00:00 (EST-5)
Location: DANVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The forecast point on the Dan River at Danville (DVLV2) crested at 25.31 feet the highest stage since the New Years flood of January 1, 2007. This was just below the currently defined Major Flood Stage of 25.5 feet. Impacts were limited to some closed roads near the river and several buildings being partially flooded. The flood approached the 20-year return frequency (0.2 annual exceedance probability) according to USGS data.

Flood in WYTHE, VIRGINIA
From 24-APR-17 08:00:00 to 24-APR-17 22:00:00 (EST-5)
Location: FAVONIA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Almost 20 different roads were closed or marked as dangerous across Wythe County.

Flood in MONTGOMERY, VIRGINIA
From 24-APR-17 05:00:00 to 24-APR-17 23:00:00 (EST-5)
Location: KANODES MILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Flooding occurred across much of Montgomery County closing numerous roads and forcing the closure of county schools for the day. The Roanoke River at Lafayette (LAAV2) crested at 8.85 feet (Minor Flood stage - 8 ft) and the South Fork Roanoke at Shawsville crested at 5.19 feet (Minor Flood stage - 5 ft). The New River at Radford (RDFV2) rose quickly to flood stage late on the 24th and crested at 16.78 feet (Flood stage - 14 feet), somewhere close to a 5-year return frequency (0.2 annual exceedance probability).

Flood in SMYTH, VIRGINIA
From 23-APR-17 17:30:00 to 24-APR-17 05:30:00 (EST-5)
Location: MT CARMEL
Flood cause: Heavy Rain
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Newspaper

Significant flooding affected much of Smyth County, especially in the Marion to Chilhowie corridor. Chilhowie had flooding in the town park with the Middle Fork Holston River rising all the way across the park to Railroad Avenue. The water also reached across Highway 107 between Berry Metals and McDonald���s leading to a closure of that section of road. Old vehicles were under water at Berry���s and the water covered part of McDonald���s parking lot in the front and the back. Water came up to a church next to the town park and the field next to the Smyth County Tourism Center flooded. Flood waters damaged houses on both ends of town and several businesses on Main Street.  The Middle Fork of the Holston River was reported to be flooding near the intersection of VA Route 622 and US Highway 11, about 1 mile from exit 50 off Interstate 81. Flooding was reported on Old Lake Road with a driver stranded in a vehicle. Fox Valley Road was also reported to be flooded and closed from the Middle Fork of the Holston River.
The Middle Fork Holston River USGS gage at Seven Mile Ford (SMFV2) crested at 6.57 feet (preliminary) early on the 24th. This was the highest reading on this gage since November 2003. According to USGS data the discharge of 6800 cfs at this gage has annual chance exceedance between 0.1 and 0.2 (between 5-year and 10-year return period).

Flood in PITTSYLVANIA, VIRGINIA
From 24-APR-17 00:00:00 to 25-APR-17 18:00:00 (EST-5)
Location: NEW DESIGN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Up to 15 roads across Pittsylvania County were closed due to flooding or trees down.

Flood in PULASKI, VIRGINIA
From 24-APR-17 04:00:00 to 25-APR-17 20:00:00 (EST-5)
Location: PULASKI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Flooding was reported in several parts of Pulaski County including Peak Creek and along parts of the New River. The Peak Creek IFLOWS gage (PCRV2) crested at 8.5 feet and caused some flooding upstream of the town of Pulaski in the Kersey Bottom area near Melborn and Crescent Streets. The low-water crossing at Lottier Bottom was closed due to water across the roadway. Several other roads in the county were closed due to high water.

Heavy Rain in PATRICK, VIRGINIA
From 24-APR-17 00:00:00 to 24-APR-17 13:36:00 (EST-5)
Location: ELAMSVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall of 4.35 inches measured since midnight on April 24th.

Flood in CHARLOTTE, VIRGINIA
From 25-APR-17 12:00:00 to 27-APR-17 06:00:00 (EST-5)
Location: RANDOLPH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Flooding developed along the Roanoke River with the river gage at Randolph (RNDV2) cresting just over 24 feet or Moderate Flood stage midday on the 26th.

Flash Flood in SMYTH, VIRGINIA
From 23-APR-17 19:40:00 to 23-APR-17 20:40:00 (EST-5)
Location: MC MULLIN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

In the midst of ongoing longer-term flooding several additional roads were closed in the Chilhowie to Marion corridor after higher rainfall rates, up to 0.75 to 1.25 inches per hour moved across the area. Roads closed included Carlock Road north of Chilhowie, Fox Valley Road, Porter Valley Road, Old Lake Road and Scratch Gravel Road. This additional rainfall aggravated the ongoing flooding from several days of rain.

Flood in TAZEWELL, VIRGINIA
From 23-APR-17 16:30:00 to 24-APR-17 09:00:00 (EST-5)
Location: RAVEN
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Old Kentucky Turnpike in Cedar Bluff was completely covered by flood waters from either Indian Creek or the Clinch River. Water flooded a basement causing an oil tank and hot water heater to overturn. Water was also reported up to the basement level of a home along Route 67 in Raven. The Clinch River gage at Richlands (RLRV2) crested at 10.68 feet at 0200 EST. Minor Flood stage is 10 feet.

Heavy Rain in MARTINSVILLE (C), VIRGINIA
From 22-APR-17 07:00:00 to 25-APR-17 07:00:00 (EST-5)
Location: MARTINSVILLE
Property damage: 7.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Storm total rainfall amounts of 5.16 and 5.33 inches were reported in Martinsville producing saturated soils that led to two downed trees on the mornings of the 25th and 26th. One tree was across Morningside Drive and another fell onto a house.

Flood in BLAND, VIRGINIA
From 23-APR-17 17:42:00 to 24-APR-17 05:42:00 (EST-5)
Location: ROCKY GAP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Wolf Creek was reported out of its banks along Eagles Road.

Flood in GRAYSON, VIRGINIA
From 24-APR-17 03:42:00 to 24-APR-17 15:42:00 (EST-5)
Location: STEVENS CREEK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: 911 Call Center

Eagle Bottom Road in Fries was reported closed due to high water, possibly from Eagle Bottom Creek. Several days of persistent rain preceded the flooding.

Flood in HALIFAX, VIRGINIA
From 24-APR-17 18:00:00 to 28-APR-17 18:00:00 (EST-5)
Location: BARKSDALE
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Dan River flooded in Halifax County through South Boston. Several roads were closed by the Dan River and other flooded streams. The USGS river gage near Paces (PCEV2) crested above the Major flood category threshold (27 feet), reaching 29.14 feet late day on the 26th . This was the highest crest since September 1996 during Hurricane Fran and 6th highest crest at Paces with data back to about 1940.  It was approximately a 25-year return frequency per the USGS or a .04 annual exceedance probability. At the South Boston river gage the crest of 30.25 was also above the Major flood threshold of 29 feet, the highest level since March 2003 and 9th highest on record. There was significant flooding impacts in South Boston with roads closed and several businesses affected. A car lot lost 15 cars due to flooding, and damage across Halifax County was estimated to be in the hundreds of thousands of dollars. There were two water rescues conducted in Halifax county during this event. On Wednesday evening (4/26) a lady drove into high waters crossing Old Cluster Springs Road and became stranded. Early Thursday (4/27) morning another individual drove a vehicle into floodwaters near the Hyco River bridge and was swept off Lowery Road. The driver was able to escape without injury.

Flood in WYTHE, VIRGINIA
From 24-APR-17 04:50:00 to 24-APR-17 18:50:00 (EST-5)
Location: PORTERS XRDS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Cripple Creek flooded a portion of Apperson Drive.

Flood in WYTHE, VIRGINIA
From 24-APR-17 08:15:00 to 25-APR-17 01:30:00 (EST-5)
Location: MAX MEADOWS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Max Meadows Road was closed due to flooding from Reed Creek. The Reed Creek USGS gage at Grahams Forge (GRHV2) crested at 7.36 feet (Minor Flood Stage - 6.5 feet) at 1630 EST. According to USGS studies the peak flow of 7910 cfs at this gage is a little below the 0.1 annual exceedance probability or 10-year return frequency.