This comprehensive ecological landscape design project, “Steelhead of Petaluma”, accredited by Eisner Prize, involves my various work on investigation, research, designing, planning through a series of different scales on landscape in Petaluma watershed, based on the behavior feature and habitat requirement of steelhead trout, an anadromous habitat-sensitive species whose population is declining drastically. Simultaneously, I coordinated surroundings urban area and steelhead habitat inside by landscape method along with ecology, biology, hydrology, forestry, horticulture into interaction of multi-disciplines.