Change in Minor Flood Stage at Clay City

Change in Minor Flood Stage at Clay City, beginning Thursday February 7th.



To:       Subscribers:
          -Family of Services

          -NOAA Weather Wire Service
          -Emergency Managers Weather information Network
          Other NWS partners, users and employees

From:     Darrin Hansing

          Service Hydrologist

          NWS Lincoln, IL

SUBJECT: Change in minor flood stage at the Little Wabash River

near Clay City from 16 feet to 18 feet, effective February 7,


The National Weather Service (NWS) forecast office in Lincoln,

IL will raise the minor flood stage for the U.S. Geological

Survey river gage, located along the Little Wabash River near

Clay City, from 16 feet to 18 feet. This change will become

effective on February 7, 2013. The NWS location identifier

(NWSLI) at this location is CLAI2.

Through multiple site visits by the National Weather Service

and Clay County Emergency Management, it has been determined

that impacts due to high river levels are not observed until

the river reaches at least 18 feet. At that level,

agricultural land that is not immediately adjacent to the

river begins to flood. Upon reaching a stage of 18.5 feet,

two roads within the reach of the river have water over them.


The adjustment of flood stage will benefit the residents near

Clay City by allowing the National Weather Service to more

accurately convey the threat of flooding, thereby reducing

the amount of unnecessary flood warnings issued for this

location. This change has been coordinated with the U.S.

Geological Survey (USGS) and the local Emergency Management.


Minor flood stage is the river level at which minimal human

impact from floodwaters begins, and the level the National

Weather Service uses as a threshold for issuing river flood

warnings. Moderate and major flood levels are levels at which

human impact increases noticeably. Numerous secondary roads

are often inundated and some outbuildings may be flooded. At

major levels, primary roads and highways can become flooded

along with residences and businesses.


River forecast and flood information is available from the NOAA

NWS Advanced Hydrologic Prediction Service (AHPS) page by

clicking on the Rivers and Lakes link on the left hand menu of

the NWS Lincoln web site at...


River forecast information is also broadcast on NOAA Weather



The National Weather Service welcomes public feedback. If you

have any questions or comments about these service changes,

please contact:

Darrin Hansing

Service Hydrologist

National Weather Service Forecast Office

1362 State Route 10
Lincoln, IL 62656

Phone:  217-732-4029 X493

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