One of the two spots I know in Northern California where a waterfall lands right onto the beach. Unlike the McFay Falls, Alamere waterfall is accessible, so it can be admired up, close & personally.

Alamere Falls in located in the Pt.Reyes National Seashore. To reach it, head North on Rt.1 -> Make a left on Olema-Bolenas road towards Bolenas -> Continue onto HorseShoe Hill road -> Make a right on Mesa road just before hitting the town -> Continue past the Bird Sanctuary after the road turns to dirt -> End of the road is the trail head. A map of the roads and trails in the area is here: http://www.nps.gov/pore/pdf/map_parkmap.pdf (Bolinas Bay is to the bottom of the map)

The trail runs along the coast initially (hence, 'coastal' trail) for about a mile, before running inland. From here the trail runs for about 3 miles, past Bass Lake, past the turnoff for Crystal Lake before the turnoff for an unmaintained trail down to Alamere Falls. From here, the falls is about .4 miles, but a fairly steep hike requiring great care during the final descent. Except for this last .4 miles the trail is a very moderate hike, and the total roundtrip of 8.4 miles can be covered in about 4 and a half hours including a 45-minute stop at the waterfall itself.