Q:

Create custom coordinate system in postgis

I have a Wayne county Michigan parcel dataset with a custom SRID: 
when I bring it into ArcGIS 
Projected Coordinate System:    NAD_1983_HARN_StatePlane_Michigan_South_FIPS_2113_Feet_Intl
Projection: Lambert_Conformal_Conic
False_Easting:  13123359.58005249
False_Northing: 0.00000000
Central_Meridian:   -84.36666667
Standard_Parallel_1:    42.10000000
Standard_Parallel_2:    43.66666667
Latitude_Of_Origin: 41.50000000
Linear Unit:    Foot

Geographic Coordinate System:   GCS_North_American_1983_HARN
Datum:  D_North_American_1983_HARN
Prime Meridian:     Greenwich
Angular Unit:   Degree

I am trying to insert this SRID into postgis. Is this enough info to go and create the insert statement into postgreSQL?

A:

It's easy here

Look it up on http://www.spatialreference.org
Find it SR-ORG:7069 NAD_1983_HARN_StatePlane_Michigan_South_FIPS_2113_IntlFeet
Click PostGIS spatial_ref_sys INSERT statement
Run that insert command.

Reproduced below,
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
values ( 97069, 'sr-org', 7069, '', 'PROJCS["NAD_1983_HARN_StatePlane_Michigan_South_FIPS_2113_IntlFeet",GEOGCS["GCS_North_American_1983_HARN",DATUM["D_North_American_1983_HARN",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",13123359.58005249],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-84.36666666666666],PARAMETER["Standard_Parallel_1",42.1],PARAMETER["Standard_Parallel_2",43.66666666666666],PARAMETER["Latitude_Of_Origin",41.5],UNIT["Foot",0.3048]]');

Now you have SRID 7069.

