The combination of above normal mountain snow-pack up to 200% of normal and warmer than normal temperatures in the month of May led to continued and new river flooding. Missoula County reported that the tally for damage was to the amount of $450,000.

Flood in LINCOLN, MONTANA
From 05-MAY-18 21:00:00 to 11-MAY-18 07:00:00 (MST-7)
Location: YAKT
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Yaak River reached minor flood stage and affected low lying areas adjacent to the river.

Flood in MISSOULA, MONTANA
From 07-MAY-18 10:00:00 to 13-MAY-18 15:30:00 (MST-7)
Location: BONNER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The Blackfoot River reached minor flood stage and mainly low lying areas were impacted.

Flood in RAVALLI, MONTANA
From 10-MAY-18 01:15:00 to 11-MAY-18 08:00:00 (MST-7)
Location: PINESDALE
Flood cause: Heavy Rain / Snow Melt
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

The Bitterroot River reached minor flood stage causing the Spring Gulch campground and low lying areas adjacent to the river to flood.

Flood in RAVALLI, MONTANA
From 10-MAY-18 06:00:00 to 11-MAY-18 11:00:00 (MST-7)
Location: KENSPUR
Flood cause: Heavy Rain / Snow Melt
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Emergency Manager

With both the Bitterroot River and Burnt Fork Creek running high, damage to the Lee Metcalf Wildlife Refuge and Whitetail Golf Course occurred. Much of the damage included scouring of pavement in these areas.

Flood in RAVALLI, MONTANA
From 08-MAY-18 11:00:00 to 13-MAY-18 00:00:00 (MST-7)
Location: FLORENCE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

The Bitterroot River near Missoula reached minor flood stage which caused field flooding on the east side of Highway 93 both north and south of Lolo. Ground water adjacent to the Bitterroot River flooded the Linda Vista Golf course and nearby homeowner's backyards.

Flood in MISSOULA, MONTANA
From 07-MAY-18 11:30:00 to 16-MAY-18 08:00:00 (MST-7)
Location: SEELEY LAKE
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Homes and buildings adjacent to Seeley Lake and the Clearwater River were impacted by flooding. Thirteen homes in the Seeley Lake region were under evacuation orders.

Flood in POWELL, MONTANA
From 10-MAY-18 07:00:00 to 12-MAY-18 07:00:00 (MST-7)
Location: PIONEER
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Several small creeks including Union and Nevada flooded nearby fields.

Flood in MISSOULA, MONTANA
From 09-MAY-18 04:15:00 to 13-MAY-18 10:00:00 (MST-7)
Location: POST
Flood cause: Heavy Rain / Snow Melt
Property damage: 450.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Low lying areas adjacent to the Clark Fork River below Missoula to Frenchtown were flooded. The river also flooded numerous homes in the vicinity of Harpers Road from both surface water and groundwater; some homes were evacuated by Missoula County Sheriff's Department. Sandbagging of homes occurred on Mallard Way to keep from flooding.