WEBVTT

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Jane and John woke up in different parts of the same town.

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They had similar plans for the day:

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drive to the coast and go fishing with friends.

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Does this sound like a typical day?

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It seems simple,

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but there is complex science,
planning and math behind the scenes.

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Let's take a closer look at how location data

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can make ...or break your day!

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During last night's rainstorm,

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Jane's house stayed high and dry.

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That's because her builder hired a surveyor

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who used up-to-date flood maps

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and accurately measured the position and height of the house.

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Models and tools allow the surveyor

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to compute an elevation within a few centimeters.

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There's currently a project to collect gravity data

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to improve these models even more!

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John's builder didn't look at flood maps
before building.

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John's house flooded

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and now he faces expensive cleanup bills.

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Jane drove into town, passing through highway construction,

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which was going smoothly.

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There have been major highway projects here over the years,

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completed by many different companies.

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However, the teams use consistent reference frames

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for their design, planning and mapping

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so everything lines up.

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John also drove into town, but along a different route.

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At a bump in the road, he lost a hubcap,

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the second one this year.

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The contractor who most recently worked on the road

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used out-of-date coordinates

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and the new road didn't quite line up with the old one.

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The county and the contractor are still arguing

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over who will pay to fix it.

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Jane met her friends at the dock.

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It was a foggy day, so they packed extra clothes.

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Using her GPS and up-to-date nautical charts

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that show where the shoreline is located,

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Jane navigated out to her favorite fishing hole.

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Despite running late, John arrived at the
dock,

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met his friends, and departed shortly after
Jane.

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His nautical charts were old, but he knew
the area well.

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Unfortunately, the shoreline had shifted in
last year's big storm,

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and John ran aground in the fog.

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He spent the afternoon waiting for a rising tide

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to lift his boat off a sandbar.

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NOAA collects information and images

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to define the shoreline,

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ultimately supporting safe navigation.

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Accurate shoreline information helps ships and boats

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make it safely in and out of port.

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So while Jane's day seemed simple and smooth,

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geodesy and coastal mapping made it possible!

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John's day shows what can happen

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when we use inaccurate or out-of-date data.

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NOAA does both geodesy and coastal mapping.

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NOAA's National Geodetic Survey defines
reference frames

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that support accurate positioning/elevation information

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to help build in the right place and at the right elevation;

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and a national shoreline to support safe navigation.

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And more!

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We improve location science,

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better locations improve your life.