Tower Plans North Mountain Lookout - Fire Watchtower, Groveland California Tweet Do you have an update on the current status of this structure? Please tell us about it in the comments below. STANDARD USDA/USFS PLAN FOR STEEL, K-BRACE LOOKOUT TOWERS FOR HEIGHT RANGES BETWEEN 30' TO 120' STANDARD USDA/USFS PLAN FOR 13' X 13' STEEL LOOKOUT HOUSE (CAB); ELEVATIONS, SECTIONS, MISC. DETAILS; DATED 1961 STANDARD USDA/USFS STEEL LOOKOUT HOUSE (CAB); VENTS AND WINDOW SHUTTERS DETAILS; DATED 1961