[Qgis-user] Unable to find the write projection to make my map layers line up

[Mike Hyslop]

Hi Matt

I don't routinely work in California, but I think

   - *NAD83(2011) / California zone 3 (ftUS) (EPSG: 6420)*

 is the correct projection to use. See https://epsg.io/6420 for additional
details.

Best,
Mike

On Tue, May 30, 2023 at 4:00 PM Matthew Hartzell via QGIS-User <
qgis-user at lists.osgeo.org> wrote:

> Hello everybody,
>
> This is my first time using this forum/mailing list. Please forgive me if
> I'm doing anything wrong...
>
> *QGIS version:* 3.12
> *OS: *Mac 12.1
>
> *Problem:*
> I am trying to project a map containing parcel boundaries (vector) and
> orthoimagery (raster) to match the projection used by a set of engineering
> drawings so that I can line my map layers up to match the engineering
> drawings.
>
> The engineer who made the engineering drawings told me that the projection
> she used was:
>
>    - *NAD83 (NSRS2011), CA State Plane Zone III, U.S. Survey Feet*
>
>
> I cannot find this precise projection in QGIS’s list of projections.
> However, I tried the following projections, and none of them worked (that
> is, none of them projected my map layers in a way that lines up with the
> engineering drawings as expected):
>
>    - *NAD83 / California zone 3 (EPSG: 26943)*
>    - *NAD83 / California zone 3 (ftUS) (EPSG: 2227)*
>    - *NAD83(2011) / California zone 3 (EPSG: 6419)*
>    - *NAD83(2011) / California zone 3 (ftUS) (EPSG: 6420)*
>    - *NAD83(HARN) / California zone 3 (EPSG: 2768)*
>    - *NAD83(HARN) / California zone 3 (ftUS) (EPSG: 2872)*
>    - *NAD83(NSRS2007) / California zone 3 (EPSG: 3493)*
>    - *NAD83(NSRS2007) / California zone 3 (ftUS) (EPSG: 3494)*
>    - *NAD_1983_HARN_StatePlane_California_III_FIPS_0403 (EPSG: 102243)*
>    - *NAD_1983_StatePlane_California_III_FIPS_0403_Feet (EPSG: 102643)*
>
>
> What am I doing wrong?
>
> Which projection should I be using in QGIS so that my map layers line up
> with the projection “NAD83 (NSRS2011), CA State Plane Zone III, U.S. Survey
> Feet”?
>
> Thank you
>
> Matt
>
>
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