Shallow channel with less than 1/2 ft of water flowing NW. Mimulus and Trifolium grow on patchy, exposed volcanic rock outcrops. Adjacent upland vegetation dominated by Lolium-Trifolium grassland with banded rock outcrops. Mimulus community continuous along inner and center channels to NW and SE. Algae flowing in water.; Cows currently grazing in adjacent uplands. Few hoof prints in plot. Tree frog in water.