All Day

WalkingTown DC

(DC) (Events DC) Events DC WalkingTown is DC’s best public tour program, featuring guided walking tours in neighborhoods throughout the District of Columbia. Join us for eight days to visit eight wards and learn about our unique city. This year, we will host more than 50 walking and biking tours in September, offering authentic and memorable tours that help residents ...

Butterfly and Dragonfly Survey at Dyke Marsh

Dyke Marsh Alexandria

(VA) (Friends of Dyke Marsh) Join our volunteer team once a month, 8:30 a.m. to 12 noon, and  help count butterflies and dragonflies in Dyke Marsh on September 23rd and October 21st.  Surveyors do not need experience or specialized knowledge. Meet in the south Belle Haven Park parking lot. Wear sturdy shoes, bring water, sun and insect protection and a snack. Binoculars, ...

Free

Urban Tree Summit

Silver Spring Civic Center One Veterans Place, Silver Spring

(MD) (Casey Trees) (Montgomery Parks) Learn from industry-leading experts on their research and contributions at the Urban Tree Summit. All arborists, landscape industry professionals, environmental/green industry professionals, engineers, designers, housing developers, students, and interested citizens are invited to take advantage of this opportunity to learn from experts, experienced peers, and local, tree-focused, and mission-driven organizations. This is an all-day conference ...

$110 – $125

Mussel Survey in Heritage Marsh

Kingman and Heritage Islands Park 575 Oklahoma Ave NE, Washington DC

(DC) (Anacostia Watershed Society) You will help AWS with a wild freshwater mussel survey in Heritage Marsh! We will be walking in mud that can be very mucky in waders (AWS can provide you with a pair if you don’t have your own). If you’re not comfortable walking in mud using waders, we recommend joining us at a different event. ...