Title 43, Public LandsRelease 119-110

§3101 Definitions

Title 43 › CHAPTER 49 — NATIONAL LANDSLIDE PREPAREDNESS › § 3101

Last updated Sep 22, 2026|Official source

Summary

Defines the key words used in this chapter. 3D means three-dimensional. 3D elevation data means high-resolution 3D terrain measurements collected across the United States and its territories by LiDAR, IfSAR, or similar methods, and covers both land and underwater (bathymetric) elevations. 3D Elevation Program is the program set up under section 3104(a). IfSAR means interferometric synthetic aperture radar. LiDAR means light detection and ranging. Indian tribe uses the meaning in 25 U.S.C. 5304. Lahar means a large, often fast volcanic debris flow that can threaten downstream watersheds. Secretary means the Secretary of the Interior through the Director of the U.S. Geological Survey. State means a State and the District of Columbia. State office means a state agency that maps or responds to landslide hazards. Territory means Puerto Rico; Guam; American Samoa; the Northern Mariana Islands; the Federated States of Micronesia; the Republic of the Marshall Islands; the Republic of Palau; and the U.S. Virgin Islands.

Full Legal Text

Title 43, §3101

Public Lands, Source: USLM XML via OLRC

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
The term “3D Elevation Program” means the 3D Elevation Program established under section 3104(a) of this title.
(4)IfSAR
The term “IfSAR” means interferometric synthetic aperture radar.
(5)Indian tribe
The term “Indian tribe” has the meaning given the term in section 5304 of title 25.
(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.

Legislative History

Notes & Related Subsidiaries

Statutory Notes and Related Subsidiaries

Short Title

Pub. L. 116–323, § 1, Jan. 5, 2021, 134 Stat. 5075, provided that: “This Act [enacting this chapter] may be cited as the ‘National Landslide Preparedness Act’.”

Reference

Citations & Metadata

Citation

43 U.S.C. § 3101

Title 43, Public Lands

Last Updated

Sep 22, 2026

Release point: 119-110