Leave No Trace
At all times pets must be restrained on a leash no more than six feet long. Leashes protect dogs from becoming lost and from other hazards, such as sick, injured, or rabid animals. Leashes also help protect park resources, including wildlife and vegetation.
Pet owners are responsible for picking up pet waste and disposing of it at home.
Pets should not be left unattended. Summer sunshine poses a threat to pets left in vehicles. On a bright, sunny day, even in temperatures as low as 60° F, temperatures inside a vehicle can reach dangerous levels. On an 85-degree day, the temperature inside a car—even with the windows cracked—can reach over 100 degrees within 10 minutes.
Winters on the island are generally cold, with nighttime lows frequently near freezing and occasional snowfall. Please be alert for icy spots on the trails. The boardwalk section of the Swamp Trail can be particularly slippery in the snow.
Weather during spring and fall is generally moderate, but can change quickly, especially near the Potomac River. Layers of clothing are recommended. Spring floods may close some sections of the Swamp Trail.
Last updated: March 5, 2016