### Question
Can you define what hydrographic data means?


### Answer
**Hydrographic data** is defined as the following in *33 U.S.C. § 892*:

> information acquired through hydrographic or bathymetric surveying, photogrammetry, geodetic, geospatial, or geomagnetic measurements, tide and current observations, or other methods, that is used in providing hydrographic services

#### Citation:
  - *33 U.S.C. § 892*
  - Heading: **CHAPTER 17-NATIONAL OCEAN SURVEY > SUBCHAPTER IV-NOAA HYDROGRAPHIC SERVICES**

