Olallie Daylilies

Historical marker location:

3501 New York Avenue Northeast, Arboretum, District of Columbia

( Marker is on Boxwood Loop Northeast, 0.1 miles north of Azalea Road Northeast, on the right when traveling south.)

The District was the site of a major flood in 1889: On June 4, 1889, a massive flood swept through the city, causing extensive damage and killing more than 20 people. The flood was caused by heavy rainfall and a failure of the city's sewer system.