I know this is an old thread but I can add a little info. I accessed the Canada del Oro on the east side of Saddlebrooke and ran five test pans. The material came from behind/under a 5' boulder half buried in the gravel, from cracks in conglomerate hardpan on the east side of the gulch and some bowls/traps in horizontal areas of the hardpan. I found only 4-5 tiny specs of very fine. The wash had water flowing but I could walk across it with tall rubber boots. The gravels are so deep that if one stands still in the flowing water you gradually sink as the water washes the gravel away from under your boots. I think one would need to dig down to bedrock in the bottom of the gulch to find more gold. This could only be done during the dry season. I'd guess bedrock is many feet down at this location. Has anyone accessed the northern end of Canada del Oro where it bends west then south? Historic records suggest this is the placer area.