Starting in Oregon and flowing promptly into California, the North Fork of Diamond Creek offers a 2.5-mile upstream add-on to the Diamond Creek run (which itself is an add-on to the North Fork Smith run down to Gasquet). The run features bedrock slides and boulder drops and culminates at Diamond Falls. It's too much of an effort to get to the North Fork Diamond to simply end the run at Diamond Falls, so continue on through the 4.1 miles on Diamond Creek and the additional 13.5 miles on the North Fork Smith for a toal of 20 miles of boating to take out in Gasquet.