National Weather Service Weather Forecast Office

SERVICE CHANGE NOTICE

NATIONAL WEATHER SERVICE MARQUETTE MI

...Change in flood stage on the Trap Rock River near Lake Linden...

To:      Family of Services /FOS/ Subscribers...NOAA Weather Wire

         Service /NWWS/ Subscribers...Emergency Managers Weather

         Information Network /EMWIN/ Subscribers...NOAAport

         Subscribers...Other National Weather Service /NWS/

         Customers and Partners...NWS Employees

From:    David Pearson

         Hydrology Program Leader

         WFO Marquette - Negaunee, Michigan

Subject: Change in flood stage on the Trap Rock River near Lake Linden

Near Lake Linden:

Recent changes to the Trap Rock River watershed, specifically the addition

of drainage ditches in flood prone areas and the construction of a larger

bridge opening upstream of the gauge site, have helped mitigate the flood

potential in this area.  Despite these modifications, flooding remains a

concern. Upon coordination with the local Emergency Manager, flood stage on

the Trap Rock River near Lake Linden will be raised from 8.5 feet to 9.5

feet. There will be no change to moderate and major flood stages, which are

11 and 12.5 feet, respectively.   

The National Weather Service office in Marquette has implemented

Advanced Hydrologic Prediction Service (AHPS) for select rivers in

Upper Michigan and the upper portions of the Menominee River basin.

AHPS enables the National Weather Service to provide long-range probabilistic

information which can be used to determine the level of risk for long-range

planning decisions.  Additional supportive data and explanation are available

on the internet at:

http://water.weather.gov/ahps2/index.php?wfo=mqt

The National Weather Service welcomes feedback.  If you have any questions

or comments on the information included in this document, please contact:

David Pearson

Hydrology Program Manager

National Weather Service Forecast Office

112 Airpark Drive South

Negaunee MI 49866

Phone: (906) 475-5782 ext. 493

Email: david.pearson@noaa.gov

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