Ensure that all data layers have a defined spatial coordinate system
While there are several ways to check data's spatial reference in ArcCatalog, a common method is to double-click on the layer in the Catalog Tree (or right-click on the layer and choose Properties) and click on the XY Coordinate System tab in the Properties dialog box. A typical spatial reference might be Universal Transverse Mercator (UTM), a UTM Zone Number, and a Horizontal Datum of NAD83. If the spatial reference is not defined, it will display as Unknown. (Alternatively, you can use Windows Explorer to confirm that the coordinate system is defined for a shapefile by finding its projection file, which will have a ".prj" file extension.)
If the spatial coordinate system is Unknown (as is the case when no .prj file is included in your shapefile), one must be assigned using the Select or Import buttons on the XY Coordinate System tab dialog box. You can also use the Define Projection tool in ArcToolbox. Contact firstname.lastname@example.org if you have additional questions about assigning the correct coordinate system. A representative of the LF team will respond with further guidance.
Attribute your data
Each data layer should contain the requested attributes to support the LF update process. Ensuring that your polygons are as consistently and completely attributed as possible will maximize their utility for LF updates. Existing field names in your attribute table(s) need not match those requested for LF. The content, however, should match as closely as possible.
At a minimum, event type and year of occurrence must be provided for each polygon record to be used in LF updates.
We will accept data in various formats, including ESRI shapefiles, geodatabases, and ArcInfo coverages. Supporting information, including definitions of the fields and any codes in the data tables, should accompany the data to ensure that they can be interpreted correctly.
Once you have gathered your data, please send it to Brenda Lundberg, the LF Data Administrator. You may email data smaller than 25MB to Brenda Lundberg at email@example.com. If the files are too large to send via email, contact Brenda Lundberg for alternative file transfer options.
Please contact Brenda Lundberg at (406) 329-3405 or firstname.lastname@example.org for more information.