Major Flood
19 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
17 ft
Minor Flood
16 ft
Action Stage
14 ft
What Floods at Each Level
26 ft
Significant flooding will be ongoing in Rock Valley with most houses and businesses north of downtown flooded. Portions of the bridge on 340th St are overtopped.
23 ft
Elmwood Ave is flooded near the gauge and numerous houses on the north side of Rock Valley near the river are flooded.
21 ft
Water begins to enter the northern portions of Rock Valley on the south side of the river.
20 ft
Hwy 18 west of Rock Valley is flooded. The lower portions of 300th Ave in Rock Valley north of the river and west of Elmwood Ave may flood. Major agricultural flooding is ongoing throughout the floodplain.
19 ft
Rock Valley begins to experience increasing flood problems and at least a couple of houses nearest the river begin to flood. Sandbagging of storm sewers in the city begins. Portions of 360th will be flooded.
18 ft
Water reaches the backyards of some houses north of the river and west of Elmwood Ave in Rock Valley and some outbuildings are flooded. The Rivers Bend Campground on the northwest side of Rock Valley begins to flood.
16 ft
Significant amounts of agricultural lands are flooded, and some rural roads are also threatened by high water.
13 ft
The lowest lying pasture and farm land will experience some minor flooding
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jun 21, 2024 | 27.7 ft | 157,000 cfs |
| Jun 16, 2014 | 22.72 ft | 60,600 cfs |
| Jun 21, 2018 | 21.2 ft | 34,800 cfs |
About This Gauge
Get Flood Alerts for Rock River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Rock River at Rock Valley?
The Rock River at Rock Valley gauge is maintained by USGS (site 06483500) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Rock River at Rock Valley?
The NWS-defined flood stage for Rock River at Rock Valley is 16 feet. Action stage begins at 14 feet. Moderate flooding starts at 17 feet, and major flooding at 19 feet.
How do I get alerts when Rock River rises?
Download StormCast free on Google Play, go to River Gauges, and add Rock River at Rock Valley to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Rock River at Rock Valley gauge located?
The gauge is located in Sioux County, Iowa at coordinates 43.2151°N, 96.2950°W. USGS site number: 06483500. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Rock River
On This River
Upstream: Rock River at Rock Rapids
More Resources
Source & Notes
Data provided by: Observations courtesy of U.S. Geological Survey, Observations courtesy of U.S. Army Corps of Engineers
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
- River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.
- Gauge reading may be affected by ice.