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Maryland · River

Patapsco River:Non-Tidal Gwynns Falls

Is the fish you caught here safe to eat? Below is every consumption advisory on file for Patapsco River:Non-Tidal Gwynns Falls, by species and size, in plain English — plus what's legal to keep.

2 species with advisories · contaminants: PFOS

What's safe to eat from Patapsco River:Non-Tidal Gwynns Falls

Rock Bass

PFOS

SizeWhoGuidance
All sizes General population Limit to two meals per month due to elevated PFOS.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to two meals per month due to elevated PFOS.
Children under 15 For children under 15: limit to one meal per month due to elevated PFOS.

Source: official advisory· updated 2026-09-22

Sunfish (Including Bluegill)

PFOS

SizeWhoGuidance
All sizes General population Limit to two meals per month due to elevated PFOS.
Women who may become pregnant & children under 15 For women who may become pregnant, pregnant or breastfeeding women, and children under 15: limit to two meals per month due to elevated PFOS.
Children under 15 For children under 15: limit to one meal per month due to elevated PFOS.

Source: official advisory· updated 2026-09-22

Is it legal to keep?

These are Maryland's statewide limits — a water-specific rule may override them. Always verify the current regulations before keeping a fish.

SpeciesSizeDaily limitOpen seasonKeep season
Largemouth Bass 12" min 5 Year-round Same as open
Smallmouth Bass 12" min 5 Year-round Same as open
Walleye 15" min 5 Year-round Same as open
Muskellunge 30" min 1 Year-round Same as open
Northern Pike 24" min 1 Year-round Same as open
Black Crappie 8" min 15 Year-round Same as open

Official rules: Maryland — Maryland DNR

Getting on the water

Access points from OpenStreetMap contributors.

About this water

State
Maryland
Type
River
Location
39.2723, -76.6527
Advisory source
Maryland Dept. of the Environment — Fish Consumption Advisories