ComBase needs your data
The success of ComBase depends on donations of data to increase the database. If you have growth or inactivation data to donate, please view the 2 videos in our YouTube Channel, and also download the 2 Excel files below.

How to submit your data
Your data must be formatted before it can be included in ComBase. Please review the 2 videos below. After that, download the 2 Excel files.

If you have any questions after viewing our videos, please contact support.combase@usda.gov.

(For more advanced users, this ComBase demo for Excel includes an Excel demo file of data and macros that allows you to check if your data format has the proper syntax. Please unzip the file and open it in Excel. The zip file includes a manual in PDF.)

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