Great Marsh Park Beach

Cambridge, Maryland
Managed by ShoreRivers

Great Marsh Park Beach is an unguarded beach located at Gerry Boyle Park at Great Marsh along the shores of the Choptank River in Cambridge, MD. The beach includes a small sandy area protected from the river by bordering marshes and breakwaters constructed with stone riprap. The beach is within a city-managed park and includes a playground, boat ramp, grass field, picnic shelters, and docks for your boat and to fish from. Facing upriver, the beach offers a great vista of the Fredrick C. Malkus Bridge on US Rt. 50. The beach is not guarded and there are no permanent restrooms on site. Testing is conducted as part of the Swimmable ShoreRivers bacteria monitoring program and samples are collected weekly on every Thursday between from Memorial Day to Labor Day.

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Met water quality standards less than 60% of the time

  • Historical Status
  • This status is based on the latest sample, taken on September 2nd, 2021. ShoreRivers updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on September 3th, 2021 at 11:26 AM.
For water quality icon legend, click:  
Monitoring Frequency

Great Marsh Park Beach is sampled weekly from May 27th to September 2nd.

Source Information

ShoreRivers monitors water quality at sites in this region. Sampling Season starts Memorial Day Weekend and ends Labor Day Weekend with samples taken weekly thought this time. ShoreRivers utilizes the standardized EPA criteria of 104 cfu/100 ml for collecting and analyzing a single water sample, and 35 cfu/100 ml for the geometric mean calculated from multiple samples. Results are posted as soon as lab results are available or by close of business on Friday of each week. Results will be communicated through the swim guide app. and the Choptank and Miles and Wye Riverkeeper Facebook and Instagram accounts. Results tables are available by email or by calling ShoreRivers at 443 385 0511.

A beach is marked Green when single sample results are under 104 Enterococcus / 100 ML water, and the geometric mean of multiple samples is under 35 cfu/100 ml.

A beach is marked Red when the results are equal to or above 104 Enterococcus / 100 ML water, and the geometric mean of multiple samples is equal to or above 35 cfu/100 ml.

A beach is marked Grey when there are no current results or there is no available information.

Read more
Water Quality Graph

Great Marsh Park Beach

Cambridge, Maryland
Managed by ShoreRivers

COVID-19

Keep your distance from other people.

Practicing social distancing is still essential. Only go to the beach if you are able to keep 6 feet or 2 meters away from others. Follow the instructions provided by your local health authorities. If your community has asked that you remain indoors and away from others, do so. Spending a day in any crowded place is the worst thing we can do for our most vulnerable right now and will counter our efforts to curb the virus’s spread.

Water Quality
  • Met water quality standards less than 60% of the time
  • Historical Status
  • This status is based on the latest sample, taken on September 2nd, 2021. ShoreRivers updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on September 3th, 2021 at 11:26 AM.
For water quality icon legend, click:  

Great Marsh Park Beach is an unguarded beach located at Gerry Boyle Park at Great Marsh along the shores of the Choptank River in Cambridge, MD. The beach includes a small sandy area protected from the river by bordering marshes and breakwaters constructed with stone riprap. The beach is within a city-managed park and includes a playground, boat ramp, grass field, picnic shelters, and docks for your boat and to fish from. Facing upriver, the beach offers a great vista of the Fredrick C. Malkus Bridge on US Rt. 50. The beach is not guarded and there are no permanent restrooms on site. Testing is conducted as part of the Swimmable ShoreRivers bacteria monitoring program and samples are collected weekly on every Thursday between from Memorial Day to Labor Day.

Monitoring Frequency

Great Marsh Park Beach is sampled weekly from May 27th to September 2nd.

Source Information

ShoreRivers monitors water quality at sites in this region. Sampling Season starts Memorial Day Weekend and ends Labor Day Weekend with samples taken weekly thought this time. ShoreRivers utilizes the standardized EPA criteria of 104 cfu/100 ml for collecting and analyzing a single water sample, and 35 cfu/100 ml for the geometric mean calculated from multiple samples. Results are posted as soon as lab results are available or by close of business on Friday of each week. Results will be communicated through the swim guide app. and the Choptank and Miles and Wye Riverkeeper Facebook and Instagram accounts. Results tables are available by email or by calling ShoreRivers at 443 385 0511.

A beach is marked Green when single sample results are under 104 Enterococcus / 100 ML water, and the geometric mean of multiple samples is under 35 cfu/100 ml.

A beach is marked Red when the results are equal to or above 104 Enterococcus / 100 ML water, and the geometric mean of multiple samples is equal to or above 35 cfu/100 ml.

A beach is marked Grey when there are no current results or there is no available information.

Read more
Water Quality Graph

  Beach Location Water Quality
Trappe, Maryland
Cambridge, Maryland
Cambridge, Maryland
Cambridge, Maryland
Swim Guide
is supported by
* The RBC Foundation

Swim Guide shares the best information we have at the moment you ask for it. Always obey signs at the beach or advisories from official government agencies. Stay alert and check for other swimming hazards such as dangerous currents and tides. Please report your pollution concerns so Affiliates can help keep other beach-goers safe.

Swim Guide, "Swim Drink Fish icons," and associated trademarks are owned by SWIM DRINK FISH CANADA. See Legal.

© SWIM DRINK FISH CANADA, 2011 - 2021