Explain->TidalBM

This page is maintained by NGS Software Requests

updated:04/06/09.13:19:58

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What are Tidal Bench Marks:
Tidal Bench Marks are those bench marks which have
an orthometric height maintained by NGS and also
have tidal information maintained by
The Center for Operational and Oceanographic Products and Services CO-OPS

The tidal information and orthometric elevations
of a specific survey control mark can be viewed graphically.
Displayed will be the differences between the published
NAVD88 and NGVD29 and Mean Lower Low Water (MLLW) datums.

Retrieval:
Click here to go directly to the Tidal Bench Mark Retrieval Page,

or go back to the datasheet main page and click on DATASHEETS

Input is provided for retrieving by...
    PID
Retrieved output will consist of a CO-OPS Datasheet.

Datasheet for a Tidal bench Mark:
Tidal Bench Marks are identified on the DATASHEET
by the text 'TIDAL BM' near the top.
Click Here to retrieve a sample datasheet for a Tidal Bench Mark.

Retrieval:
Go back to the datasheet main page and click on TIDAL BENCH MARK
A new page will come up
where you can enter a PID.

If the PID is associated with a Tidal bench Mark
then you will get data back.

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