· Freshwater · 2026 season

| Where | Season | Size limit | Daily limit |
|---|---|---|---|
| Youghiogheny River Lake (reservoir) | Open year-round | No size limit | 3 per day |
Source: Maryland DNR Fishing & Boating Services, captured 2026-10-04 (2026 season).
Say it, snap a photo, or type the length. SlotGauge answers KEEP or RELEASE using today's Maryland rules.
Open SlotGauge for American Shad (Youghiogheny River Lake)Marine sanctuary in the Potomac River
The Mallows Bay–Potomac River National Marine Sanctuary is a National Marine Sanctuary in the United States located in the Potomac River in Charles County, Maryland. It is best known for the "Ghost Fleet", 118 historic shipwrecks in Mallows Bay in the sanctuary's northeast corner which is the largest shipwreck fleet in the Western Hemisphere. They are among more than 200 shipwrecks in the sanctuary, some of which date as far back as the American Revolutionary War and others to the American Civil War.
Read more about Mallows Bay–Potomac River National Marine Sanctuary on Wikipedia →
Text from Wikipedia, CC BY-SA 4.0. Regulations on this page come from Maryland DNR Fishing & Boating Services, not Wikipedia.
No size limit in Maryland state waters.
3 per day.
Open year-round.
American Shad (Youghiogheny River Lake) has no size limit today, with a daily limit of 3.