Record flooding occurred during the month of April and record crests occurred on the lower portions of the Grand River at Ionia, Lowell, Ada, Comstock Park, and Grand Rapids, Michigan. Due to the severity of the flooding, Michigan���s Governor Rick Snyder declared a state of disaster for 19 counties and two cities.
The two cities declared in the disaster were Grand Rapids and Ionia.  The counties included in the disaster declaration included Barry, Gratiot, Ionia, Kent, Mecosta, Muskegon, Newaygo, Osceola and Ottawa.  Hundreds of homes were flooded, over 300 roads closed, and preliminary flood damage estimates were in excess of 32 million dollars.
On a positive note, no lives were lost during this record flooding.
Parts of West Michigan experienced flooding rainfall from the afternoon of April 17th through the day on April 18th. Most areas saw between 2 to 4 inches of rainfall. Some local areas near Holland and Grand Rapids saw around 5 inches of rainfall. All of this rainfall fell on top of already fully saturated soil from big rains that came during early to mid April.
The flooding in many areas lingered through the weekend of April 20th and 21st into the following week.  In downtown Grand Rapids flooding problems did not reach their peak until April 22nd, when the Grand River in Grand Rapids crested at 21.85 feet, causing significant flooding damage to numerous businesses and homes near the river.
Record stages were set at 5 River Forecast Points:
The Grand River at Ionia, Michigan, set a new crest stage record of 24.69 feet; the old record was 24.30 feet set back in 1948.  This also set a flow/discharge record at 25,100 cubic feet per second (cfs).
The Grand River at Lowell, Michigan, set a new crest stage record of 19.02 feet; the old record was 19.00 feet set back in 1948.
The Grand River at Ada, Michigan, set a new crest stage record of 22.94 feet; the old
record was 21.60 feet set back in 1986.
The Grand River at Grand Rapids, Michigan, set a new crest stage record of 21.85 feet; the old record was 19.64 feet set back in 1985.  However, this was only the fifth highest flow/discharge at 35,100 cfs.
The Grand River at Comstock Park, Michigan, set a new crest stage record of 17.80 feet; the old record was 17.75 feet set back in 1948.

Flood in KENT, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: BYRON CENTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Kent county. Kent County authorities estimated that flooding caused an estimated $10.6 million in damage, not including the City of Grand Rapids.  Including the city of Grand Rapids flood damage estimated reach 20 million with significant flooding occurring to numerous homes and businesses.
Kent County Emergency Management supervisors released the latest numbers Thursday, May 16, based on a damage assessment team evaluation. Flood waters in Kent County began to cause damage on April 18 when local creeks, including Buck Creek, began to overflow in parts of Wyoming, Grandville and elsewhere.
In downtown Grand Rapids, the problem reached its worst point when the Grand River crested at 21.85 feet on April 22.

Flood in ALLEGAN, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: GLENN
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Allegan county.

Flood in BARRY, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: MIDDLEVILLE
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Barry county due to heavy rainfall and antecedent high river levels and saturated grounds.

Flood in CALHOUN, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: BEDFORD
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Calhoun county due to heavy rainfall and antecedent high river levels and saturated grounds.

Flood in CLARE, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: LEOTA
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Clare county.

Flood in CLINTON, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: MATHERTON
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Clinton county.

Flood in EATON, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: WOODBURY
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Eaton county.

Flood in GRATIOT, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: RIVERDALE
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Gratiot county.

Flood in INGHAM, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: LANSING
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Ingham county.

Flood in ISABELLA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: BRINTON
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Isabella county.

Flood in JACKSON, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: SPRINGPORT
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Jackson county.

Flood in KALAMAZOO, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: ALAMO
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Kalamazoo county.

Flood in LAKE, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: IRONS
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Lake county due to significant rainfall from early to mid April.

Flood in MASON, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: FREESOIL
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Mason county due to significant rainfall from early to mid April.

Flood in MECOSTA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: PARIS
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Mecosta county due to significant rainfall from early to mid April.

Flood in MONTCALM, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: HOWARD CITY
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Montcalm county.

Flood in MUSKEGON, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: WHITEHALL
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Muskegon county.

Flood in NEWAYGO, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: VOLNEY
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Newaygo county.

Flood in OCEANA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: PENTWATER
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Newaygo county.

Flood in OSCEOLA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: TUSTIN
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rain caused significant flooding on rivers and streams across Osceola county.

Flood in OTTAWA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: FERRYSBURG
Flood cause: Heavy Rain
Property damage: 5.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Ottawa county due to heavy rainfall from early to mid April.

Flood in VAN BUREN, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: SOUTH HAVEN
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Significant flooding occurred on rivers and streams across Van Buren county due to heavy rainfall from early to mid April.

Flood in IONIA, MICHIGAN
From 17-APR-13 16:00:00 to 23-APR-13 12:00:00 (EST-5)
Location: BELDING
Flood cause: Heavy Rain
Property damage: 7.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Heavy rainfall caused significant flooding on rivers and streams across Ionia county.