I been to this waterfall so many times! It's a very easy walk on a dead end road. You can also visit the Chamber Of Commerce in Astoria and they will give you a map to this waterfall. The lady behind the counter gave us really good directions and it was pretty easy to find.
In Astoria, at the roundabout where US 101 and Highway 202 intersect at the east end of the Youngs Bay Bridge, head south along Highway 202 / Business 101 for a mile and a half, then continue on Business 101 where Highway 202 branches off left (straight). In another mile and a half, turn left onto Youngs River Road (101 bears sharply right before you can turn left, so stay straight at the Y intersection, then turn left at the 4-way stop immediately after). On Youngs River Road, continue another 7 1/2 miles and turn right where a sign points to Youngs River Falls, immediately before crossing a bridge over the Youngs River. The parking area is encountered shortly after, and a view of the falls is afforded almost immediately, with a short trail leading down to the rocky beach at the base of the falls. read more