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Open Decision Ledger · Constitutional, administrative & state liability

National river affairs and validity of a cost-sharing agreement

Supreme Court, Dec. 30, 2020, 2020Du37406 (judgment)

Case name: 협약무효확인등청구의소

Official text on the National Law Information Center

  1. Question

    Is the construction, operation and maintenance of a weir on a national river a national affair that does not become a local affair merely because a local government bears part of the cost, and may an agreement requiring that local government to bear part of the construction cost and all operation and maintenance costs be held unlawful or void?

  2. Holding

    Yes, the affair is national. Under Article 117(1) of the Constitution, Article 9(1) and Article 11(iv) of the Local Autonomy Act and Article 8(1) and Article 27(5) of the River Act, affairs concerning a national river are national affairs unless another statute provides otherwise, and the Local Autonomy Act and the River Act both leave room for a local government to bear part of the cost. Weighing the content and structure of those provisions, their legislative purpose, the fact that the county governor voluntarily proposed bearing the extra construction cost although full state funding was available at the originally selected site, the feasibility re-survey of the changed site, and the fact that most of the real economic benefit of the weir would accrue to the local government and its residents, the Court held that the agreement could not be regarded as unlawful or void.

    Summary of the holding, verbatim

    위와 같은 규정에 따르면, 국가하천에 관한 사무는 다른 법령에 특별한 정함이 없는 한 국가사무로 보아야 한다. 지방자치단체가 비용 일부를 부담한다고 해서 국가사무의 성격이 자치사무로 바뀌는 것은 아니다.

    Unofficial English translation

    According to the above provisions, affairs concerning national rivers must be regarded as affairs of the State unless otherwise specially provided by other statutes. The character of affairs of the State is not transformed into autonomous affairs because a local government bears part of the costs.
  3. Disposition

    Dismissed Stated in the decision

    상고를 기각한다. 상고비용은 보조참가로 인한 부분을 포함하여 원고가 부담한다.

    Unofficial English translation

    The appeal is dismissed. The plaintiff shall bear the costs of the final appeal, including those incurred by reason of the auxiliary participation.
  4. Form of the test

    Circumstances weighed Stated in the decision

    수중보로 인한 실질적인 경제적 이익은 대부분 지방자치단체와 그 주민들에게 귀속될 것으로 보이는 점 등을 종합하면, 갑 지방자치단체에 수중보 건설비용 일부와 운영·유지비용 전부를 부담하도록 한 협약이 위법·무효라고 볼 수 없다고 한 사례.

    Unofficial English translation

    Considering, among other things, that it appears that the substantial economic benefits arising from the submerged weir will accrue in large part to the local government and its residents, a case in which the agreement obligating local government A to bear part of the submerged weir construction costs and the entirety of the operation and maintenance costs cannot be regarded as unlawful and void.
  5. Factors

    • 국가하천에 관한 사무는 다른 법령에 특별한 정함이 없는 한 국가사무로 보아야 한다
    • 지방자치단체가 비용 일부를 부담한다고 해서 국가사무의 성격이 자치사무로 바뀌는 것은 아니다
    • 수중보 건설사업 지점으로 최초 채택되었던 지점에 사업을 시행할 경우 전액 국고 부담으로 할 수 있었는데도
    • 자발적으로 군수가 추가 공사비 등을 부담하는 방법을 제안하여 이를 반영한 변경지점에 대한 타당성 재조사를 거쳐 협약을 체결한 점
    • 수중보로 인한 실질적인 경제적 이익은 대부분 지방자치단체와 그 주민들에게 귀속될 것으로 보이는 점

    Unofficial English translation

    • Affairs concerning national rivers must be regarded as affairs of the State unless otherwise specially provided by other statutes

    • The character of affairs of the State is not transformed into autonomous affairs because a local government bears part of the costs

    • Even though, if the project were carried out at the site initially adopted as the location for the submerged weir construction project, it could have been funded entirely at national treasury expense

    • The county governor voluntarily proposed bearing the additional construction costs and the like, and the agreement was concluded after a re-examination of feasibility was conducted as to the changed site reflecting such proposal

    • It appears that the substantial economic benefits arising from the submerged weir will accrue in large part to the local government and its residents

  6. Relation to precedent

    Cannot be determined Not in the decision

    Decisions referred to

    해당 본문 참조

  7. Burden of proof

    Not addressed Not in the decision

  8. Open question and revisit condition

    Where no agreement is concluded, may the Minister of Land, Infrastructure and Transport order a local government to bear part of the cost of a national river work solely under Article 61(1) of the River Act?

    An amendment to the cost-bearing rules in Article 59 or Article 61 of the River Act, Article 122(2), 123 or 141 of the Local Autonomy Act, or Articles 74 and 75 of the Enforcement Decree of the River Act would require this entry to be read again. A later decision treating a cost-sharing agreement without a voluntary proposal or a feasibility re-survey would also call for a fresh reading.

Cross-family AI independent reading & axis check

6 of 8 axes matched GPT-6 Astra (OpenAI, codex CLI) · 2026-10-25

A reader from another model family (GPT-6 Astra), given the official text but not the primary reading, agreed on 6 of the 8 axes; the readings differed on axis 4 (form of the test), axis 8 (open question and revisit condition).

Axis 4 (Form of the test): Primary “Circumstances weighed” vs Independent “Existing test applied”

The primary describes the test as a comprehensive weighing of all statutory and factual considerations, while the independent presents it as applying the same considerations to the facts, so the form of the standard is framed differently.

갑 지방자치단체에 수중보 건설비용 일부와 운영·유지비용 전부를 부담하도록 한 협약이 위법·무효라고 볼 수 없다고 한 사례.

Axis 8 (Open question and revisit condition): Primary “Where no agreement is concluded, may the Minister of Land, Infrastructure and Transport order a local government to bear part of the cost of a national river work solely under Article 61(1) of the River Act?” vs Independent “Would the same cost-sharing agreement be valid without a voluntary local proposal or substantial economic benefits for the local community?”

The primary asks whether the minister could impose cost sharing by an order under Article 61(1) of the River Act without any agreement, while the independent asks whether the same agreement would stay valid without a voluntary proposal or economic benefit.

위와 같은 규정에 따르면, 국가하천에 관한 사무는 다른 법령에 특별한 정함이 없는 한 국가사무로 보아야 한다. 지방자치단체가 비용 일부를 부담한다고 해서 국가사무의 성격이 자치사무로 바뀌는 것은 아니다.

Raw responses and comparison record: Protocol · Blind readings (JSONL) · Axis comparison (JSONL) · SHA-256 (JSON)

Lower-court contrast & scope of application

Lower-court reading vs. Supreme Court holding

Lower-court context: The Seoul High Court, in its judgment of 27 March 2020 (2019Nu35857), held that the construction project for the weir on the upper South Han River was national affairs. It found that the agreement of 19 April 2009 neither imposed an unnecessary or unjust financial burden on the plaintiff nor violated the River Act or related provisions, and held further that although the county governor had not obtained a prior resolution of the county council on the agreement or on the related act of assuming a debt, the council had resolved the expenditure budget containing the construction cost, so the agreement could not be regarded as void.

Supreme Court standard: The Supreme Court found no error in either holding. The court below had correctly applied the statutes and the governing principle in treating the affair as national affairs, and had not misread the law on who bears the cost of national affairs under the Local Autonomy Act and the River Act, nor the law on the effect of a debt-assuming act without a council resolution. Justices unanimously dismissed the plaintiff's appeal.

Distinguishing conditions

  • A national river affair for which another statute provides a special rule, since the Court treated such affairs as national affairs only in the absence of a special provision.
  • An agreement concluded without the locality's voluntary proposal to bear extra cost or without a feasibility re-survey of the changed site, where the originally selected site would have been funded entirely from the national treasury.
  • A case in which most of the real economic benefit of the project does not accrue to the local government and its residents, which the Court weighed in favour of the agreement.

Record verification notes

First confirm that the watercourse is a national river and that no other statute carries a special cost rule for this kind of structure. Then match the agreement against the facts the Court weighed: who proposed the extra cost, whether a feasibility re-survey of the changed site was carried out, and where the economic benefit lands. Finally check whether the council resolved the expenditure budget covering the cost, since the court below relied on that resolution in rejecting the voidness claim.

From the official text

Points at issue

[1] 국가하천에 관한 사무가 국가사무에 해당하는지 여부(원칙적 적극) 및 지방자치단체가 비용 일부를 부담한다고 하여 국가사무의 성격이 자치사무로 바뀌는 것인지 여부(소극) [2] 갑 지방자치단체장은 국토교통부장관과 수중보 건설 사업시행 위치를 변경하면서 수중보 건설비용 일부와 운영·유지비용 전부를 갑 지방자치단체가 부담하도록 하는 협약을 체결하였는데, 이후 갑 지방자치단체가 협약의 무효 확인과 위치 변경에 따라 지출한 실시설계비 및 이에 대한 지연손해금을 부당이득으로서 반환할 것을 청구한 사안에서, 갑 지방자치단체에 수중보 건설비용 일부와 운영·유지비용 전부를 부담하도록 한 협약이 위법·무효라고 볼 수 없다고 한 사례

Unofficial English translation

[1] Whether affairs concerning national rivers fall within the affairs of the State (affirmative in principle), and whether the character of affairs of the State is transformed into autonomous affairs merely because a local government bears part of the costs (negative) [2] A case where the head of local government A entered into an agreement with the Minister of Land, Infrastructure and Transport, changing the site of a submerged weir construction project so that local government A would bear part of the submerged weir construction costs and the entirety of the operation and maintenance costs, and thereafter local government A filed a claim seeking confirmation that the agreement was void and the return, as unjust enrichment, of the detailed design costs expended in accordance with the change of site and the delay damages thereon, in which the agreement obligating local government A to bear part of the submerged weir construction costs and the entirety of the operation and maintenance costs cannot be regarded as unlawful and void

Summary of the holding

[1] 헌법 제117조 제1항은 “지방자치단체는 주민의 복리에 관한 사무를 처리하고 재산을 관리하며, 법령의 범위 안에서 자치에 관한 규정을 제정할 수 있다.”라고 정하고 있다. 지방자치법 제9조 제1항은 “지방자치단체는 관할구역의 자치사무와 법령에 따라 지방자치단체에 속하는 사무를 처리한다.”라고 정하고, 제2항은 지방자치단체의 사무를 예시하고 있다. 지방자치법 제11조는 “지방자치단체는 다음 각호에 해당하는 국가사무를 처리할 수 없다. 다만 법률에 이와 다른 규정이 있는 경우에는 국가사무를 처리할 수 있다.”라고 정하고 있는데, 그 제4호에서 국가하천을 ‘전국적 규모나 이와 비슷한 규모의 사무’로서 지방자치단체가 처리할 수 없는 국가사무의 예로 정하고 있다. 하천법은 국가하천의 하천관리청은 국토교통부장관이고(제8조 제1항), 하천공사와 하천의 유지·보수는 원칙적으로 하천관리청이 시행한다고 정하고 있다(제27조 제5항). 위와 같은 규정에 따르면, 국가하천에 관한 사무는 다른 법령에 특별한 정함이 없는 한 국가사무로 보아야 한다. 지방자치단체가 비용 일부를 부담한다고 해서 국가사무의 성격이 자치사무로 바뀌는 것은 아니다. [2] 갑 지방자치단체장은 국토교통부장관과 수중보 건설 사업시행 위치를 변경하면서 수중보 건설비용 일부와 운영·유지비용 전부를 갑 지방자치단체가 부담하도록 하는 협약을 체결하였는데, 이후 갑 지방자치단체가 협약의 무효 확인과 위치 변경에 따라 지출한 실시설계비 및 이에 대한 지연손해금을 부당이득으로서 반환할 것을 청구한 사안에서, 지방자치법 제122조 제2항, 제123조, 제141조, 하천법 제8조, 제27조, 제59조, 제61조 제1항, 제3항, 하천법 시행령 제74조, 제75조의 내용·체계, 입법 취지와 수중보 건설사업 지점으로 최초 채택되었던 지점에 사업을 시행할 경우 전액 국고 부담으로 할 수 있었는데도, 자발적으로 군수가 추가 공사비 등을 부담하는 방법을 제안하여 이를 반영한 변경지점에 대한 타당성 재조사를 거쳐 협약을 체결한 점, 수중보로 인한 실질적인 경제적 이익은 대부분 지방자치단체와 그 주민들에게 귀속될 것으로 보이는 점 등을 종합하면, 갑 지방자치단체에 수중보 건설비용 일부와 운영·유지비용 전부를 부담하도록 한 협약이 위법·무효라고 볼 수 없다고 한 사례.

Order

상고를 기각한다. 상고비용은 보조참가로 인한 부분을 포함하여 원고가 부담한다.

Unofficial English translation

The appeal is dismissed. The plaintiff shall bear the costs of the final appeal, including those incurred by reason of the auxiliary participation.

Provisions referred to

[1] 헌법 제117조 제1항, 지방자치법 제9조 제1항, 제11조 제4호, 제122조, 제123조, 제141조, 하천법 제8조 제1항, 제27조 제5항 [2] 지방자치법 제122조 제2항, 제123조, 제141조, 하천법 제8조, 제27조, 제59조, 제61조 제1항, 제3항, 하천법 시행령 제74조, 제75조

Read 2026-10-25 · Cross-read 2026-10-25. All quotes matched against the official text. The Chinese-character placeholders the court used for anonymised parties are given in their Korean readings, and parenthetical Chinese-character glosses are omitted.

Every entry is published only after all quotes have been matched character by character against the official text, and audited by an independent second reading from a different model family across all eight axes. Both agreed axes and text-grounded interpretive divergences are recorded openly. The ledger is a research record, not an assessment of the court or advice on any matter.

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