The month of March was a very wet period for eastern Washington. The Pullman COOP station reported a monthly total of 5.25 inches of precipitation, 2.75 inches above average for the month. The Spokane airport reported 4.11 inches which was 2.50 inches above average. The Colville COOP station reported 2.98 inches which was 1.86 inches above average and the Wenatchee airport recorded 1.23 inches, or .59 inches above average.  Most of this precipitation fell as rain over lower elevations after an initial snow event early in the month.
Beginning around the 9th of March and continuing through the end of the month and into April saturated soil conditions were maintained and aggravated by low elevation snow melt and periodic rounds of Pacific moisture falling as rain over northeastern Washington with numerous small stream flooding issues, road washouts and debris flows during this period. Isolated mudslides and debris flows were noted in the Cascades as well, but the main focus of areal flooding and debris flows was over the eastern Columbia Basin and the northeastern Washington mountains.
In eastern Washington a state of emergency was declared in thirteen counties due to widespread areal flooding. In the town of Sprague 40 National Guard troops were deployed to help sandbag and control damage from a swollen creek which ran through the town.
Mainstem river flooding included the Palouse River, the Spokane River and the Little Spokane River with minor flooding on other streams, however the Palouse River achieved Major Flood Stage.

Flood in GRANT, WASHINGTON
From 11-MAR-17 12:00:00 to 17-MAR-17 08:00:00 (PST-8)
Location: TIFLIS
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A sinkhole caused unstable roadway conditions and forced the closure of Road W-NE near Warden.

Flood in SPOKANE, WASHINGTON
From 09-MAR-17 06:00:00 to 31-MAR-17 23:59:00 (PST-8)
Location: HITE
Flood cause: Heavy Rain / Snow Melt
Property damage: 8.00M
Crop damage: 0.00K
Reported by: Emergency Manager

A series of rain storms and low elevation snow melt caused saturated soil conditions through out Spokane County through the second half of March. These conditions lead to numerous small stream and field flooding issues through out the county. Homes and buildings along the shore of Williams Lake and Newman Lake experienced flooding from high lake levels. In Mead a hillside began slowly sliding in a residential area necessitating the evacuation of two homes. Spokane County was included in a State of Emergency declaration issued by the state Governor.
Twenty two roads in the county were washed out or at least temporarily closed due to flooding.

Flood in LINCOLN, WASHINGTON
From 12-MAR-17 00:00:00 to 31-MAR-17 23:59:00 (PST-8)
Location: WELLS
Flood cause: Heavy Rain / Snow Melt
Property damage: 800.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Lincoln County experienced flooding issues from periodic heavy rain and low elevation snow melt through much of March. The county was included in a State of Emergency declaration due to this flooding. The town of Sprague experienced widespread flooding when Negro Creek overflowed it's banks with most homes and structures in the town experiencing basement, yard and minor first floor flooding. The road into town was cut off by flooding. The National Guard was mobilized to help sandbag.
The town of Creston also experienced extensive field, basement, road and parking lot flooding. In Edwall a grain elevator collapsed due to saturated soil conditions.

Flood in STEVENS, WASHINGTON
From 12-MAR-17 16:00:00 to 31-MAR-17 23:59:00 (PST-8)
Location: CLAYTON
Flood cause: Heavy Rain / Snow Melt
Property damage: 1.60M
Crop damage: 0.00K
Reported by: Emergency Manager

Periods of heavy rain and snow melt produces numerous road closures due to flooding and debris flows in Stevens County through the second half of March. Extensive flooding of fields near the Colville River occurred. The fire station at Hunters was closed due to flooding. Near Northport a lane of flooded road collapsed under a driver, who escaped unharmed. The most notable road closure was Highway 395 near Colville which is a major route through the county. This road remained closed through the end of the month with extensive repairs needed which could not be started until soil conditions dried out.
Stevens county was included in a Washington State State of Emergency declaration as a result of the damage caused by this episode.

Flood in FERRY, WASHINGTON
From 13-MAR-17 00:00:00 to 31-MAR-17 23:59:00 (PST-8)
Location: LAURIER
Flood cause: Heavy Rain / Snow Melt
Property damage: 780.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Numerous roads in Ferry County were closed due to flooding and debris flows through the second half of March due to spring snow melt and periodic heavy rain. Ferry County was included in a Washington State State of Emergency declaration due to widespread flooding issues.

Flood in PEND OREILLE, WASHINGTON
From 14-MAR-17 00:00:00 to 31-MAR-17 23:59:00 (PST-8)
Location: METALINE FALLS ARPT
Flood cause: Heavy Rain / Snow Melt
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flooding and debris flows resulted in numerous road closures across the county due to spring snow melt and periodic heavy rains. Homes were threatened with flooding on Davis Lake as the lake level rose due to run off. Pend Oreille county was included in a Washington State State of Emergency declaration because of this widespread flooding episode.