Waterfalls near Washington

These aren't in Washington per se, but are just a drive away.

Umpachene Falls (~30 min away)
Umpachene Falls Rd, New Marlborough, MA 01259 (directions)
A real local spot, the falls are wide and are just a few hundred feet from the parking area.
New Marlborough, MA
Race Brook Falls (~30 min away)
716-732 S Undermountain Rd, Sheffield, MA 01257 (directions)
A nice little uphill hike right next to the Race Brook Lodge. Parking can be tough when it's busy though.
Sheffield, MA
Campbell Falls (~30 min away)
Campbell Falls Rd, New Marlborough, MA 01259 (directions)
A nice, tall, picturesque waterfall that is a short but steep hike down from the trailhead. Great to take a dip or have a picnic at the base of the falls.
New Marlborough, MA