The combination of recent rainfall amounts of 2 to 4 inches across the area and mountain snow melt resulted in rapid water runoff and flooding. As a result, the Musselshell River rose above flood stage from Harlowton to Ryegate, as well as in the towns of Roundup and Musselshell.

Flood in MUSSELSHELL, MONTANA
From 07-JUN-11 22:00:00 to 17-JUN-11 11:00:00 (MST-7)
Location: ELSO
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

High flows along the Musselshell River from receding floodwaters from May quickly returned to flood as more heavy rainfall moved through the region. Additional rainfall amounts of 2 to 4 inches fell across much of Musselshell County during the 6th and 7th of June. This caused rapid water runoff and similar flooding that had just occurred in May. County officials indicated flooding in the town of Roundup. Several roads were washed out and many others closed due to the flooding. Highways 87 and 12 leading into Roundup were inundated and closed. Evacuations of about 30 homes occurred in Roundup. About eight feet of standing water surrounded the Busy Bee Cafe, a local landmark in Roundup. Many houses and businesses in Roundup were under several feet of water. An estimated 50 structures were inundated with water, some up to their rooftops. In addition, four teenagers had to be rescued from the high waters after disobeying orders to stay out of the area and then became stranded.

Flood in GOLDEN VALLEY, MONTANA
From 07-JUN-11 06:00:00 to 14-JUN-11 09:00:00 (MST-7)
Location: WALLUM
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

High flows along the Musselshell River from receding floodwaters from May quickly returned to flood as more heavy rainfall moved through the region. Rainfall amounts of 2 to 4 inches fell across most of Golden Valley County during the 6th and 7th of June. This caused rapid water runoff and more flooding similar to what was experienced in May. County officials indicated flooding in the town of Ryegate and water on Highway 12 near Ryegate. There were reports of several homes being flooded. In addition, a rancher 10 miles southwest of Ryegate received 5 inches of rain which washed out roads and caused flash flooding.

Flood in WHEATLAND, MONTANA
From 07-JUN-11 22:00:00 to 13-JUN-11 22:00:00 (MST-7)
Location: TWODOT
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

High flows along the Musselshell River from receding floodwaters from May quickly returned to flood as more heavy rainfall moved through the region. Rainfall amounts of 2 to 4 inches fell across much of Wheatland County during the 6th and 7th of June. This caused rapid water runoff and more flooding similar to what occurred in May. County officials indicated flooding occurred all along the Musselshell River. There was extensive flooding in Harlowton. Highway 12 was inundated and closed leading into Harlowton. The Musselshell River at Harlowton fluctuated above and below flood stage from the 7th through the 14th. The river crested at 8.65 feet on the 9th and 8.54 feet on the 10th.

Flood in ROSEBUD, MONTANA
From 09-JUN-11 00:00:00 to 30-JUN-11 00:00:00 (MST-7)
Location: BIRNEY
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Rainfall combined with snow melt caused the Tongue River near Birney to fluctuate above and below flood stage throughout the entire month. The river crested at 6.34 feet on the 1st, 7.30 feet on the 12th, 6.94 feet on the 18th and 6.95 feet on the 27th. The 7.30 crest on June 12th was the highest crest on record at the gauge site near Birney. Sandbagging efforts avoided flooding downstream in the St Labre and Ashland areas. Otherwise, mainly lowland ranch and farm land was impacted.

Flood in CUSTER, MONTANA
From 11-JUN-11 01:00:00 to 30-JUN-11 01:00:00 (MST-7)
Location: FT KEOGH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heavy rainfall upstream on the Yellowstone River resulted in the Yellowstone River at Miles City to rise above flood stage. The Yellowstone River at Miles City rose above flood stage June 11th through June 30th and crested at 13.19 feet on the 12th and 14.01 feet on the 28th. The persistent high flows resulted in significant bank erosion along the river. However, no major impacts occurred as a result.

Flood in ROSEBUD, MONTANA
From 09-JUN-11 00:00:00 to 30-JUN-11 00:00:00 (MST-7)
Location: FORSYTH
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heavy rainfall combined with snowmelt runoff resulted in significant rises on the Yellowstone River near Forsyth. The river fluctuated above and below flood stage from the 9th through the end of the month. The river crested at 10.95 feet on the 11th, 10.79 feet on the 18th and 11.88 feet on the 28th.

Flood in PARK, MONTANA
From 12-JUN-11 00:00:00 to 30-JUN-11 00:00:00 (MST-7)
Location: LIVINGSTON
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Warm temperatures combined with scattered showers and thunderstorms resulted in continued high elevation snowmelt. As a result, the Yellowstone River at Livingston fluctuated above and below flood stage from the 23rd through the end of the month. The river crested at 9.85 feet on the 24th and 10.15 feet on the 30th. This 10.15 foot crest was the second highest crest on record at Livingston, only surpassed by the 1997 record flood. The persistent high flows resulted in significant erosion along the river. Some damage occurred to the island road as water overtopped the road. However, no major impacts were reported.