Clear Lake Hachured Shoreline Map: 1872. Material: paper, textile. (a) Clear Lake Shoreline. Size: 24" W. x 31" L. Scale: 1" = 400'. Description: heavy paper - linen backing - manuscript map of the hachured shoreline of Clear Lake - drawdown shorelines drawn in red - lower left chart shows lake area at different water levels - many faint penciled calculations around margin. (b) Size: 11 1/2" W. x 34 1/2" L. Scale: 1" = 20'. Description: white, black and red linen - manuscript profiles of Clear Lake - eight profiles show Clear Lake basin from shore out - depth in feet shown in red - distance from shore in feet shown in black.
