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Iowa Overview Weather and stream conditions, forecast, and more for whole Iowa Community Locator Community Locator:
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RIVER COMMUNITIES
PLACES OF INTEREST
RECENT COMMUNITIES
FLOOD CONDITIONS
Flood Watch & Advisory (NWS) NWS watches, warnings, advisories, and other flood related information Flood Alerts (observations) Locations with water level in the range of alerts calculated using real-time stream level observations
FLOOD FORECAST
Flood Alerts (NWS forecast) Flood alerts calculated using NWS stage forecast Flood Potential (with rain forecast) Rainfall Forecast: These alerts account for rainfall forecasted by the NWS for the next several hours Flood Potential (with rain scenario) Rainfall Scenario: These alerts are based on a scenario of two inches of rainfall during the next 24 hours Flood Potential (no rain scenario) No More Rain: These alerts are based on assumption that rainfall will not continue
ALERT TOOLS
Flood Alert Notification Enable IFIS Flood Alert notification service to receive automated alerts on your desktop while you are away from your browser
DATA RESOURCES
Stream Gauges IFC + USGS gauges Rain Gauges Reservoirs Groundwater Wells Soil Moisture Gauges
COMMUNITY RESOURCES
River Communities All communities upstream to the selected community
FLOOD MAPS
Current Conditions Flood extents related to current river conditions --- see IFIS terms of use Community Scenarios Flood extents related to measured or forecasted river conditions --- see IFIS terms of use Reservoir Releases Flood extents related to reservoir releases --- see IFIS terms of use
Lake Red Rock Reservoir Pool Des Moines River flood inundation mapping for Lake Red Rock pool is based on a water surface elevation. The inundation boundaries were generated using 3m Iowa LiDAR, and the edges were generalized for appearance. The upstream inundation limit was set at Highway 65. Downstream to Mouth Des Moines River flood inundation mapping downstream of Lake Red Rock is based on releases from Red Rock Reservoir. The releases correspond to annual chance exceedance events according to the USACE Des Moines River Regulated Flow Frequency Study, 2019 Regulation Plan Update. Tributary inflow was not accounted for during this analysis. Top of levee elevations from the National Levee Database were incorporated into levee systems along the Des Moines River. Saylorville Lake Downstream of Saylorville Des Moines River flood inundation mapping downstream of Saylorville is based on releases from Saylorville Reservoir. The releases correspond to annual chance exceedance events according to the USACE Des Moines River Regulated Flow Frequency Study, 2019 Regulation Plan Update. The only tributary inflow accounted for during this analysis was the Raccoon River. Top of levee elevations from the National Levee Database were ncorporated into levee systems along the Des Moines River. The downstream inundation extent was set at Highway 65. Coralville Lake Coralville to Columbus Junction Iowa River flood inundation mapping downstream of Coralville reservoir to Columbus Junction is based on reservoir releases. The discharges correspond to annual chance exceedance events according to the 2009 USACE Iowa River Regulated Flow Frequency Study Final Report. Top of levee elevations from the National Levee Database were incorporated into levee systems along the Iowa River. Tributary inflow was only accounted for during this analysis downstream of Iowa City. Releases at Columbus Junction Iowa River flood inundation mapping from Highway 70 to upstream of Wapello, IA is based on the stage at the Columbus Junction, IA gage. The stages correspond to annual chance exceedance events according to the 2009 USACE Iowa River Regulated Flow Frequency Study Final Report at the Wapello, IA gage. Tributary inflow was not accounted for during this analysis. Releases at Wapello Iowa River flood inundation mapping near Wapello, IA is based on the stage at the Wapello, IA gage. The stages correspond to annual chance exceedance events according to the 2009 USACE Iowa River Regulated Flow Frequency Study Final Report at the Wapello, IA gage. Tributary inflow was not accounted for during this analysis. Releases at Oakville Iowa River flood inundation mapping near Oakville, IA is based on the stage at the Oakville, IA gage. The stages correspond to annual chance exceedance events according to the 2009 USACE Iowa River Regulated Flow Frequency Study Final Report at the Wapello, IA gage. Flows on the Mississippi River were of the coincident frequency event on the Iowa River. Tributary inflow was not accounted for during this analysis.
State-wide Inundation ... --- see IFIS terms of use
MAP RESOURCES
Draft Flood Hazard Maps   100 and 500 year Iowa Draft Flood Hazard products delineated in partnership with the Iowa Department of Natural Resources Iowa Statewide Floodplain Mapping Project --- see IFIS terms of use Flood Risk Management Maps   Floodplain areas associated with varying degrees of flood risk --- see IFIS terms of use
WEATHER CONDITIONS
Current Rainfall Daily Rainfall Cumulative Rainfall
RAINFALL FORECAST
Forecast (Hourly) Forecast (Cumulative) Forecast (Daily)
SNOW MELT
Snow Melt (Hourly) Snow Melt (Cumulative)
TOOLBOX
Driving Directions Get directions from A to B with flooding information

Distance & Area Calculator Calculate distance and area for selected points on the map... Find Watershed Boundary Click on a location on the map, and automatically find the watershed boundary... Raindrop Flow Tracker Click on a location on the map, and find the path for a rain drop flowing on the landscape... Flood Hazard Calculator This tool calculates your flood hazard likelihood given annual chance of an event and duration of living at the location.
PUBLIC HEALTH & FLOOD RECOVERY
Red Cross Iowa Shelters County Public Health Departments Trauma Centers Waste Outfalls Waste Water Treatment Outfalls
CUSTOM MAP LAYER

   e.g. USGS stream conditions, NWS flood forecasts
MAP SERVICES
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MAP LAYERS
INFO PANELS
Community Panel Inundation Maps Panel
MAP OPTIONS
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COMMUNITY INFORMATION
WATERSHED CHARACTERISTICS
Flooding Scenarios
%100

LEGEND
Major Flood Stage
Moderate Flood Stage
Flood Stage
Action Stage
No Alert
> 75%
50-75%
25-50%
< 25%
Flood Risk: Above Normal
Flood Risk: Elevated
Flood Risk: Near Normal
Flood Risk: Reduced
Flood Risk: Below Normal
Flood Risk High
Flood Risk Elevated
IFC Bridge Sensor
USGS Stream Gauge
Scenario Level
Basemap Level

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