The Iowa Flood Center recently received $150,000 from the Iowa Department of Homeland Security and Emergency Management, according to KCRG. The IFC also received $30,000 from the Iowa Department of Natural Resources. The network’s service provider is phasing-out the previously used technology, according to KCRG, so the funding will provide new modems and data plans to keep the sensors running.
The Iowa Department of Transportation has also installed five new flood sensors along the Iowa-Nebraska state boundary, the Iowa Capital Dispatch reported. Areas in both states along the Missouri River were devastated by floods last spring. With elevated flood risk forecast for this year, the sensors could help Iowa and Nebraska officials coordinate disaster response.
While Iowans rejoiced over spring-like weather this week after a long, brutal winter, flooding caused by rapid snowmelt and heavy rains has threatened communities across the state.
Iowa weather services have been reporting higher-than-average risks for major flooding this spring since late February, and many outlooks have only increased within the last week, according to the Des Moines Register. The risk is most pronounced along the Mississippi River, where a Quad Cities survey found the risk of flooding through May to be 95 percent last week. The National Weather Service says flooding in the Quad Cities could break records.
The National Weather Service issued a flood watch Wednesday morning that will last until at least this evening across most of the state. In some areas the watch will extend into next week. Below is information on flooding and alerts throughout the state as of this morning.
Major flood stage was reached in Waterloo, Maquoketa and DeWitt as of Thursday morning. Moderate flood stage was reached in many areas Wednesday, including Kalona, Atkins and Augusta (IFIS).
Yesterday, Cedar Rapids expected a “moderate flood stage” when the Cedar River crests early next week. Officials said this should be fairly insignificant for residents. The city had already reached moderate flood stage as of Wednesday night (Gazette/IFIS).
An ice jam raised alarm in Ottumwa Wednesday morning, though it only caused minor agricultural flooding (Des Moines Register).
Squaw Creek in Ames reached major flood stage Wednesday afternoon. As of Thursday morning, all areas were at or below moderate levels (IFIS).
An ice jam collapsed a bridge in Johnston Wednesday evening. The trail leading to the bridge had been closed prior to the collapse (Des Moines Register).
Des Moines Public Works closed parts of George Flagg Parkway and Fleur Avenue. These could remain closed for days (WHOtv).
An ice jam in the Raccoon River flooded rural communities in Dallas County (Des Moines Register).
Western Iowa was hit worst of all. As of Thursday morning, eight communities from north to south were at major flood stage (IFIS).
The Boyer River in Hogan and the West Nishnabotna River near Avoca reached major flood stage Wednesday afternoon. A Red Cross station was set up in Avoca for those displaced from homes (kwbe/IFIS).
Underwood in Pottawattamie County lost function of its sewer lift system Wednesday. Residents were asked to stop flushing toilets temporarily (kwbe).
Harrison County Emergency Management ordered a partial evacuation of Missouri Valley Wednesday night. As of 9:20pm, 2,600 people were underwater (Des Moines Register).
Several roads have been closed as well. Check 511ia.org for current closures.
Take care around even shallowly flooded areas, especially when driving. Remember that while newly-purchased flood insurance takes 30 days to go into effect (and will therefore not help you this week), Iowa’s flood season has only just begun.
Citizens of Iowa know that with heavy rainfall comes flooding. The last few weeks of rain have served as a very real reminder around the state.
The Iowa Flood Center is a great source of information on current, forecasted and potential floods. Their Iowa Flood Information System in particular offers tools for researchers, city planners, and even for concerned or curious private citizens.
At first glance, the IFIS may seem overwhelming. Fortunately for the everyday user, the IFIS homepage includes a tutorial video and links to some of the most universally useful features of the system. These basic tools can be layered with additional information like rainfall, national parks and zip code boundaries, if users so choose.
The Inundation Maps feature shows current conditions at IFS water sensors . Zoom in on a selected area of the state and click on a blue “USGS” box along the water to view the water level at that sensor. Click “More Info” to view the level over time. You can play with the slider in the panel to the right to see how higher or lower water levels would affect your community.
The Flood Alertsfeature shows flood alerts at different stages, from “action” to “major” across the state. Clicking on the triangular alert symbols pulls up the same information about water level that the Inundation Maps feature does.
The River Communitiesfeature dots the state with purple squares representing communities near rivers. Clicking on each will pull up information about future flood outlook and put a border around the upstream watershed so users can see what may be headed their way.
Use these tools during current and future flood hazards to stay informed, keep safe, or simply marvel at the power of nature and technology.
BAMS is the flagship publication of the American Meteorological Society. The bulletin, which is released monthly, features scientific articles related to weather, water, and climate as well as news stories and editorials.
Witold Krajewski, the Iowa Flood Center’s director, is lead author on the article featured in BAMS. Titled “Real-Time Flood Forecasting and Information System for the State of Iowa,” the academic article provides a detailed understanding of the Iowa Flood Center’s (IFC) flood forecasting and information dissemination system.
IFC established the system following the record floods of 2008. Using scientific models and mathematical equations, the Iowa Flood Information System (IFIS) is able to provide rainfall and streamflow forecasts every fifteen minutes. Iowans from over 1,000 communities can access these real-time observations using the interactive IFIS web platform.
Prior to the development of this system, floods frequently occurred without warning in Iowa, as they did in 2008. The report reads,
“Devastating floods that inundated Cedar Rapids came as a surprise, leaving residents and businesses little time to evacuate; residents of Iowa City and the University of Iowa campus watched helplessly as floods compromised more and more buildings after the Coralville Dam lost its controlled-release functionality. Overall, the 2008 flood upended countless lives and livelihoods and caused between $8 billion and $10 billion in damages—at the time, the fifth-largest disaster in the history of the United States.”
Nine years later, the IFC is now able to consistently measures rainfall every five minutes across the state, and Iowans can have peace of mind heading into the rainy summer months.
Sections of the Cedar River reached “flood level” after heavy rains earlier this week.
Data from the Iowa Flood Information System show that National Weather Service (NWS) sensors near Conesville and Palo detected levels in the Cedar River that exceeded “flood level” stage. NWS sensors use a four-point scale to rank flood severity: “Action Level, “Flood Level, “Moderate Level,” and “Major Level.” While “flood level” typically does not present a serious immediate threat, the system is meant to warn communities, landowners, and others about potential upcoming threats.
Sensors at Palo – which is about about 10 miles northwest of Cedar Rapids – recorded levels that exceeded “flood stage” over the weekend and on Monday but those level began to recede by Tuesday. Sensors at Conesville – roughly 60 miles southeast of Cedar Rapids – recorded “flood stage” levels around the middle of the day Wednesday. Unlike the Iowa River, the Cedar River does not have a dam or reservoir which helps to control flow rates downstream after heavy rains.
Spikes in nitrate levels were also detected in the Cedar River following this week’s rainstorms, according to data from the Iowa Water Quality Information System. The sensors at Palo and Conesville detected nitrate levels 2 mg/l or more above 10 mg/l, which is the Maximum Contaminant Level allowed for drinking water as established by the U.S. Environmental Protection Agency.
The Coralville Reservoir crested at 708.2 feet above sea level earlier this week and levels are expected to return to normal if weather cooperates. The University of Iowa has spent about $4 million on measures to protect university property while the City of Iowa City has spent more than $500,000. These figures do not include damage estimates.