# The units of the SDR module's USLE output **URL:** \ **Category:** Software Support\ **Tags:** sdr\ **Created:** [September 4, 2024, 9:20am UTC](https://community.naturalcapitalalliance.org/t/the-units-of-the-sdr-modules-usle-output/5408 "2024-09-04T09:20:27Z")\ **Posts on this page:** 1\ **Showing post:** 7
**Author:** ![swolny](https://yyz1.discourse-cdn.com/flex031/user_avatar/community.naturalcapitalalliance.org/swolny/32/181_2.png) [@swolny](https://community.naturalcapitalalliance.org/u/swolny)\ **Post date:** [September 11, 2024, 12:42pm UTC](https://community.naturalcapitalalliance.org/t/the-units-of-the-sdr-modules-usle-output/5408/7 "2024-09-11T12:42:29Z")
Hi @Monika - > I want to know as a novice, want to take the liberty of asking how the data out of the model should be compared with the actual, there is only one hierarchical data map in China, if it is the site data comparison is not required sediment transport. It is best if you have observed data for at least one point in the watershed you are modeling. The User Guide provides a [very brief outline of the process of calibration](https://storage.googleapis.com/releases.naturalcapitalproject.org/invest-userguide/latest/en/sdr.html#comparison-with-observations). You can also search this forum for other discussions related to calibration. [This recent discussion](https://community.naturalcapitalalliance.org/t/usgs-gage-data-streamflow/5335/4) is for NDR, but much of it also applies to sediment. ~ Stacie --- _[View the full topic](https://community.naturalcapitalalliance.org/t/the-units-of-the-sdr-modules-usle-output/5408)._