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republic-os/legal/us/code/title-43/chapter-12/section-503.md
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Ingested titles 12–51 and 54 from OLRC USLM XML @119-100 (the whole Code
now, uniform edition; Title 53 is reserved/empty). LegalText 11,221 ->
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legal-us-code default now covers every title.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-06 10:51:44 -04:00

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---
type: "LegalText"
title: "43 U.S.C. § 503"
description: "“Unusual or emergency conditions” defined"
jurisdiction: "us"
corpus: "united_states_code"
kind: "code_section"
title_number: 43
title_name: "PUBLIC LANDS"
chapter_number: "12"
chapter_name: "RECLAMATION AND IRRIGATION OF LANDS BY FEDERAL GOVERNMENT"
section: "503"
citation: "43 U.S.C. § 503"
status: "current"
release_point: "119-100"
release_date: "2026-06-26"
source: "official"
source_url: "https://uscode.house.gov/download/releasepoints/us/pl/119/100/xml_usc43@119-100.zip"
source_identifier: "/us/usc/t43/s503"
source_file: "data/legal/raw/us/code/title-43/usc43.xml"
source_hash: "94a7dd92bc30d89ee1ecd209790a916c73ab2016397a4ad13d1687f650b01479"
raw_snapshot_hash: "d46a16361aa9d10bbc4b27ea0561882d240801c965a2700a4b7cf5f02f552a5f"
text_hash: "4c4b08e0c70347a0233dec79db78ad9d22f9cf6b0047a56566aa5229daaa75c6"
retrieved_at: "2026-07-04"
confidence: "official"
tags: ["legal", "us-code"]
---
# 43 U.S.C. § 503 - “Unusual or emergency conditions” defined
## Text
The term “unusual or emergency conditions”, as used in section 502 of this title, shall be construed to mean canal bank failures, generator failures, damage to transmission lines; or other physical failures or damage, or acts of God, or of the public enemy, fires, floods, drought, epidemics, strikes, or freight embargoes, or conditions, causing or threatening to cause interruption in water or power service.
(June 26, 1948, ch. 676, § 2, 62 Stat. 1052.)