Answer: tidalbasin

AnswerCrossword Clue
TIDALBASINManmade inlet subject to ebbs and flows
TIDALBASINPotomac River feature
TIDALBASINNational Cherry Blossom Festival focal point
TIDALBASINView from the Jefferson Memorial
TIDALBASINIt's in West Potomac Park
TIDALBASINJefferson Memorial site in Washington
TIDALBASINLarge body in Washington, D.C.
TIDALBASINWashington, D.C., has a famous one
TIDALBASINArtificial inlet subject to ebbs and flows