Storm Events Database

Event Details

Event Flood
-- Flood Cause Heavy Rain
State IOWA
County/Area PALO ALTO
WFO DMX
Report Source Official NWS Observations
NCDC Data Source CSV
Begin Date 2010-06-27 11:30:00.0 CST-6
Begin Location 1NE GRAETTINGER
Begin Lat/Lon 43.24/-94.76
End Date 2010-06-29 19:15:00.0 CST-6
End Location 3N OSGOOD
End Lat/Lon 43.24/-94.71
Deaths Direct/Indirect 0/0 (fatality details below, when available...)
Injuries Direct/Indirect 0/0
Property Damage 10.00K
Crop Damage 0.00K
Episode Narrative Another period of heavy rainfall affected the state as several MCS's swept across the state. A nearly stationary frontal boundary that had been in place through most of the month continued to be the focal point for thunderstorm activity. Soils over the state were saturated or nearly so and rivers never fell much below flood stage from the previous events, and some hadn't even fallen yet. Agricultural losses continued to mount as the flooding this late in the planting season closed the window in the possibility of replanting waterlogged fields. Damage was done in many cities throughout the state during the month as wave after wave of flood waters inundated basements. A more complete discussion of the months flooding is contained in the second flooding event of the month from 12-21 June 2010. An additional problem by the end of the month was that the major reservoirs were at capacity. Below is a summary of reservoir conditions. Rathbun Lake started near 914 foot MSL and then increased to 921.50 ft MSL by the 30th of the month. The Chariton River near Rathbun Lake saw a mean discharge of near 1500 cfs which occurred from the 1st through 5th of the month. The flow was then decreased to approximately 159 to 500 cfs through the 9th of the month. From there the flow was increased to 1250-1860 cfs through the end of the month. It ended the month at 1570 cfs. Saylorville Lake elevations began the month at 858.04 feet MSL and it was allowed to fall to 857.10 feet MSL by the 11th of the month. It then rose to 861.56 ft by the 14th of the month due to an increase in rainfall throughout the upstream basin. As more heavy rain fell the level of the reservoir quickly rose to 885.89 feet by the end of the month. Discharge from the reservoir began at 6540 cfs and was decreased to 2840 cfs by the 15th of the month. After heavy rainfall occurred, the discharge was increased to 10,600 cfs on the 19th of the month. It was gradually increased to 22,800 cfs by the 29th of the month. Lake Red Rock rose dramatically by the end of the month. It began at 760.70 ft MSL and dropped to 759.88 ft MSL on the 11th of the month. It then rose to 778.59 ft MSL by the end of the month. Discharge out of Red Rock began at 21,600 cfs on the first of the month and was decreased to 6060 cfs by the 14th of the month. Due to rainfall, the outflow was then dramatically increased to 50,900 cfs by the end of the month.
Event Narrative


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All events for this episode:

Location County/Zone St. Date Time T.Z. Type Mag Dth Inj PrD CrD
Totals: 0 0 2.435M 11.910M
FINCHFORD BLACK HAWK CO. IA 06/25/2010 03:38 CST-6 Flood 0 0 100.00K 500.00K
BENSON BLACK HAWK CO. IA 06/25/2010 22:45 CST-6 Flood 0 0 100.00K 250.00K
FT DODGE WEBSTER CO. IA 06/26/2010 01:22 CST-6 Flood 0 0 250.00K 2.000M
BELMOND WRIGHT CO. IA 06/26/2010 03:30 CST-6 Flood 0 0 200.00K 2.000M
PEORIA MAHASKA CO. IA 06/26/2010 07:28 CST-6 Flood 0 0 100.00K 1.000M
CHURCHVILLE WARREN CO. IA 06/26/2010 08:44 CST-6 Flood 0 0 50.00K 500.00K
HUNTINGTON EMMET CO. IA 06/26/2010 09:15 CST-6 Flood 0 0 250.00K 1.000M
AMES ARPT STORY CO. IA 06/27/2010 03:57 CST-6 Flood 0 0 50.00K 500.00K
(DSM)DES MOINES INTL POLK CO. IA 06/27/2010 06:27 CST-6 Flood 0 0 250.00K 10.00K
HADDEN HILL DALLAS CO. IA 06/27/2010 08:02 CST-6 Flood 0 0 250.00K 200.00K
BROCK RANCH ARPT HUMBOLDT CO. IA 06/27/2010 08:05 CST-6 Flood 0 0 25.00K 250.00K
BOUTON DALLAS CO. IA 06/27/2010 08:36 CST-6 Flood 0 0 25.00K 100.00K
MINERVA MARSHALL CO. IA 06/27/2010 10:30 CST-6 Flood 0 0 250.00K 2.000M
GRAETTINGER PALO ALTO CO. IA 06/27/2010 11:30 CST-6 Flood 0 0 10.00K 0.00K
DAWSON DALLAS CO. IA 06/27/2010 18:47 CST-6 Flood 0 0 200.00K 1.000M
VALERIA JASPER CO. IA 06/28/2010 04:30 CST-6 Flood 0 0 25.00K 100.00K
JOHNSTON POLK CO. IA 06/28/2010 18:15 CST-6 Flood 0 0 250.00K 500.00K
BENSON BLACK HAWK CO. IA 06/29/2010 09:30 CST-6 Flood 0 0 50.00K 0.00K
Totals: 0 0 2.435M 11.910M