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Louisiana Spatial Reference Center (LSRC)
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Browse Topics
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IS NGVD29 THE SAME AS MEAN SEA LEVEL?
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WHY DID WE SWITCH FROM NGVD29 TO NAVD88?
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WHY DID THE ELEVATIONS CHANGE WHEN WE SWITCHED TO NAVD88?
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DID WE SINK THAT MUCH?
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WHAT IS THE CONVERSION FROM NGVD29 TO NAVD88?
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Can’t I use CorpsCon to convert survey data from NGVD29 to NAVD88?
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WHAT IS A DATUM AND AN EPOCH?
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OK, AGAIN, WHAT IS AN EPOCH?
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WHY DOESN’T MY BENCHMARK SHOW UP ON THE NGS WEBSITE?
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WHAT DOES THIS 2004.65 EPOCH MEAN?
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WHY IS THE ELEVATION ROUNDED TO THE 0.1 FOOT ON THE NGS DATASHEET?
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IS GPS MORE ACCURATE THAN LEVELS?
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WHAT IS MLLW AND HOW DO I USE IT?
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WHO ELSE HAS SUBSIDENCE PROBLEMS (TEXAS?) AND WHAT ARE THEY DOING ABOUT IT?
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