Public Information Statement
Issued by NWS Billings, MT

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MTZ028>042-056>058-063>068-WYZ098-099-241130-

Public Information Statement
National Weather Service Billings MT
429 AM MST Thu Feb 22 2018

...New Flood Stage for the Stillwater River at Absarokee and the
Boulder River at Big Timber as of March 1st 2018...

After reviewing the last few runoff seasons it has been
determined that the flood stage for the Stillwater river at
Absarokee and the Boulder River at Big Timber are too low,
resulting in unnecessary warnings. In coordination with local
emergency officials, new flood stages have been established for
these locations.

Starting March 1st 2018 the new flood stages will be as follows:

River        Forecast Point      Site ID     Flood Stage
Stillwater   Absarokee           SRAM8       7.0 feet
                                             7.3 feet (Moderate)
                                             7.7 feet (Major)

Boulder      Big Timber          BTMM8       7.5 feet

The National Weather Service defines flood stage as the river
level that begins to impact life and/or property. River flood
warnings will be issued by the National Weather Service in
Billings when the river level reaches, or is expected to reach or
exceed flood stage.

These sites can be accessed on the Advanced Hydrologic Prediction
Service, or AHPS. AHPS allows users to see the observed and
forecast data points along rivers and streams, including the
points listed above. Graphical display of this information can be
found of the internet at, water.weather.gov .

Information provided on the internet includes:
  1) Graphs showing current and forecast river levels
  2) Graphs showing chances or probabilities of exceeding certain levels,
     flow and volume
  3) Impact information which is a description of what happens when the
     water reaches certain levels
  4) Historical crest levels and dates
  5) A map and sometimes photographs showing the location of the gauge
  6) FEMA national flood hazard mapping

If you have any questions or comments on this change, please contact:

Tom Frieders
Warning Coordination Meteorologist
National Weather Service Billings MT
Phone: 406-652-0851
Email: tom.frieders@noaa.gov


$$


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