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Photo: Middle River City - panoramio by Bohao Zhao (CC BY 3.0) License

Gunpowder Falls State Park Hammerman Area

State park · Middle River, Maryland

Cold water — serious cold-shock risk today

Cold water

Cold water — serious cold-shock risk today: water temperature is 53°F, cold enough to cause cold-water shock on sudden immersion.

  • Water temp 53°F (12°C)
  • Streamflow 1 ft³/s
  • Gage height 1.85 ft

Live, provisional data from USGS gauge FOSTER BRANCH NEAR JOPPATOWNE, MD (3.3 mi away), as of Oct 20, 2:35 AM gauge-local time.

  • Flow is above the 75th percentile for Oct 20 (median 0 ft³/s over 11 years); fast water is the top river-drowning risk. — USGS daily streamflow statistics, as of Oct 20, 2:35 AM gauge-local time
Why, sources & official advisories
  • Water temperature is 53°F, cold enough to cause cold-water shock on sudden immersion. — USGS gauge 01585075, as of Oct 20, 2:35 AM gauge-local time

No official beach-advisory feed for Maryland yet — follow posted signs and local guidance.

Get an email when it’s warm enough

It’s 53°F at Gunpowder Falls State Park Hammerman Area now. We check the water daily and email you once when it reaches your temperature.

Cool todayPicnic tablesPublic restroom

Gunpowder River hub for picnics & kayaking, with rentable picnic shelters, fishing & swimming.

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Weather at Gunpowder Falls State Park Hammerman Area

54°F, Clear · H 68° / L 53° · 2% chance of rain
H: 68° L: 53°
Clear
Clear
54°
|
Feels like 48°
Precipitation
2%
Humidity
50%
Wind
10 mph
UV Index
0
12 AM
Clear
55°
3 AM
Clear
54°
6 AM
Clear
54°
9 AM
Sunny
56°
12 PM
Sunny
64°
3 PM
Sunny
68°
6 PM
Sunny
64°
9 PM
Clear
59°

Frequently asked questions

Where is Gunpowder Falls State Park Hammerman Area?
Gunpowder Falls State Park Hammerman Area is a state park in Middle River, Maryland.
What is the water temperature at Gunpowder Falls State Park Hammerman Area?
As of October 20, 2026, the water temperature at Gunpowder Falls State Park Hammerman Area in Middle River, Maryland is 53°F (12°C), measured by USGS gauge 01585075, 3.3 miles away.
Can you swim at Gunpowder Falls State Park Hammerman Area?
Cold water — serious cold-shock risk today: water temperature is 53°F, cold enough to cause cold-water shock on sudden immersion. Checked October 20, 2026.
How is Gunpowder Falls State Park Hammerman Area rated?
Gunpowder Falls State Park Hammerman Area in Middle River, Maryland has an average visitor rating of 4.5 out of 5, based on 3496 reviews.

Location & Contact

7200 Graces Quarters Rd, Middle River, MD 21220

Middle River, Maryland 21220

Popular Times
Monday
Morning
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Afternoon
12p
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Evening
6p
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Not busy
Moderate
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💡 Best times & visiting tips
  • ›Weekday mornings (8–10 AM) are typically less crowded
  • ›Check the forecast 2–3 days ahead for best planning
  • ›Avoid holiday weekends for a quieter experience

Features & amenities

People Talk About

💬 beach💬 clean💬 kayaking💬 lifeguards💬 grill💬 rent💬 asada💬 flies💬 social distancing💬 car seat

Amenities

🧺 Picnic tables🚻 Public restroom
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