43 USC § 3101 - Definitions

---
identifier: "/us/usc/t43/s3101"
source: "usc"
legal_status: "official_prima_facie"
title: "43 USC § 3101 - Definitions"
title_number: 43
title_name: "PUBLIC LANDS"
section_number: "3101"
section_name: "Definitions"
chapter_number: 49
chapter_name: "NATIONAL LANDSLIDE PREPAREDNESS"
positive_law: false
currency: "119-84"
last_updated: "2026-04-17"
format_version: "1.1.0"
generator: "[email protected]"
source_credit: "(Pub. L. 116–323, § 2, Jan. 5, 2021, 134 Stat. 5075.)"
---


# § 3101. Definitions

In this chapter:

**(1)** **3D** The term “3D” means 3-dimensional.

**(2)** **3D elevation data**

**(A)** **In general** The term “3D elevation data” means 3D, high-resolution data obtained using LiDAR, IfSAR, or other methods over the United States (including territories).

**(B)** **Inclusions** The term “3D elevation data” includes terrestrial and bathymetric elevation data.

**(3)** **3D elevation program** section 3104(a) of this title

The term “3D Elevation Program” means the 3D Elevation Program established under .

**(4)** **IfSAR** The term “IfSAR” means interferometric synthetic aperture radar.

**(5)** **Indian tribe** section 5304 of title 25

The term “Indian tribe” has the meaning given the term in .

**(6)** **Lahar** The term “lahar” means a large debris flow of mostly volcanic material that is—

**(A)** often fast-moving; and

**(B)** a hazard in watersheds downstream of volcanic peaks.

**(7)** **LiDAR** The term “LiDAR” means light detection and ranging.

**(8)** **Secretary** The term “Secretary” means the Secretary of the Interior, acting through the Director of the United States Geological Survey.

**(9)** **State** The term “State” means—

**(A)** a State; and

**(B)** the District of Columbia.

**(10)** **State office** The term “State office” means any unit of State government that handles the identification, mapping, assessment, and research of landslide hazards or responding to landslide events, including—

**(A)** a State geological survey office;

**(B)** a State department of emergency response; and

**(C)** a State department of transportation.

**(11)** **Territory** The term “territory” means—

**(A)** the Commonwealth of Puerto Rico;

**(B)** Guam;

**(C)** American Samoa;

**(D)** the Commonwealth of the Northern Mariana Islands;

**(E)** the Federated States of Micronesia;

**(F)** the Republic of the Marshall Islands;

**(G)** the Republic of Palau; and

**(H)** the United States Virgin Islands.

---

**Source Credit**: (Pub. L. 116–323, § 2, Jan. 5, 2021, 134 Stat. 5075.)

## Statutory Notes and Related Subsidiaries

### Short Title

> “This Act [enacting this chapter] may be cited as the ‘National Landslide Preparedness Act’.”

, , , provided that: