Solid Waste Agency of Northern Cook County v. United States Army Corps of Engineers
The Supreme Court ruled that the Clean Water Act does not give the Army Corps of Engineers authority over isolated, nonnavigable ponds just because migratory birds visit them.
The decision struck down the Corps' 'Migratory Bird Rule' and reaffirmed that the word 'navigable' in the law still limits federal power over local waters, leaving states with more control over land-use decisions involving ponds and other isolated waters.
How it got here: A federal trial court sided with the Corps on jurisdiction; the Seventh Circuit affirmed based on Commerce Clause reasoning; the waste agency asked the Supreme Court to review.
The Case in Depth
What happened
A group of 23 Chicago-area suburbs formed an agency to build a landfill on an abandoned sand and gravel pit that had become a collection of ponds used by migratory birds. When the agency sought to fill some ponds, the Army Corps of Engineers denied a permit, claiming jurisdiction under the Clean Water Act because migratory birds used the site as habitat.
The question before the Court
Could the Army Corps of Engineers require a federal permit before a group of towns could fill in isolated ponds simply because migratory birds used them?
The Court's answer
No — the Court ruled that the Army Corps of Engineers could not require a federal permit for filling the isolated ponds just because migratory birds used them. The Clean Water Act's authority over 'navigable waters' still requires some meaningful connection to navigable waters, and the word 'navigable' cannot be read out of the statute entirely, even though earlier cases gave it limited weight.
The Court also declined to defer to the agency's broader reading of its own authority, explaining that stretching federal power to its constitutional limits over what is otherwise a traditional area of state control—land and water use—requires a clear statement from Congress that it intended that result, which was missing here.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Municipalities, developers, and landowners with isolated ponds, wetlands, or gravel pits on their property no longer automatically need a federal permit just because birds use the water. The ruling shifts more authority over such land-use decisions to state and local governments and narrows the reach of a major federal environmental law.
What changes now
The ruling is a final decision on the merits, striking down the Migratory Bird Rule as applied to this site and reversing the lower court. The Corps can no longer rely on migratory bird habitat alone to claim jurisdiction over isolated, nonnavigable waters. The case does not address the Commerce Clause question, since the Court resolved it on statutory grounds, leaving that broader constitutional issue unresolved for future cases.
What this does not decide
The Court did not decide whether Congress could constitutionally regulate these waters under the Commerce Clause, since it resolved the case on statutory grounds alone. It also left open how far federal jurisdiction extends over other categories of waters, such as nonnavigable tributaries or wetlands with different kinds of connections to navigable waters.
Concurrences and dissents
Dissent — Justice Stevens
“Our Nation's waters no longer burn.”Highlighting the Clean Water Act's success in reducing pollution before criticizing the majority's ruling.
Justice Stevens argued that the Clean Water Act's text and history show Congress deliberately dropped the word 'navigable' from its core definition to reach all 'waters of the United States,' not just navigable ones. He contended Congress had acquiesced in the Corps' broader 1975 and 1977 regulations covering isolated waters, and that the majority wrongly departed from that precedent. He also argued the Migratory Bird Rule was a valid exercise of Commerce Clause power because filling such waters is almost always done for economic reasons and affects interstate commerce in the aggregate.
How the Court got there
The legal reasoning, step by step
- The Court examined its earlier ruling in Riverside Bayview Homes, a 1985 case allowing federal jurisdiction over wetlands that actually touched navigable waterways, and noted that decision rested on a close physical link between the wetlands and navigable waters.
- The Court found no comparable link here: the isolated ponds on the abandoned gravel pit had no adjacency to any navigable water, so extending federal jurisdiction to them would go beyond what the earlier case supported.
- The Court held that the word 'navigable' in the statute still carries meaning and cannot be read out of the law entirely, even though it had previously said the term has 'limited import.'
- Applying the rule that courts should avoid reading a statute to raise serious constitutional questions unless Congress clearly intended that result, the Court declined to extend deference to the agency's rule because it pushed federal authority to the outer edge of the Commerce Clause without a clear congressional statement authorizing that reach.
- The Court also found that the Migratory Bird Rule would intrude on the states' traditional authority over local land and water use, reinforcing its reluctance to read the statute so broadly absent clear congressional direction.
- Concluding that the statute's text would not support federal jurisdiction over these nonadjacent, isolated ponds, the Court held the agency's rule exceeded what the Clean Water Act authorizes.
Doctrinal impact
Cases affected by this decision
Distinguishes United States v. Riverside Bayview Homes, Inc. (474 U. S. 121)
The Court said that case only covered wetlands touching navigable waters, not isolated ponds with no such connection.