Canyon Lake is located at 29°52'53" North, 98°16'2" West (29.881462, -98.267460).
According to the United States Census Bureau, the city has a total area of 156.87 mi2 (406.30 km2). 144.26 mi2 (373.62 km2) of it is land and 12.62 mi2 (32.68 km2) of it is covered by water. The total area is 8.04% water.
Canyon Lake is located in the Central Standard Time (CST) timezone, GMT-06:00. It observes Daylight Saving Time (DST).