- How much water does the Barrier contain behind it in the lake?
- If the Barrier faulted, what do you think would happen? How much water would escape and what kind of power is the escaping water equivalent to?
The Barrier is a natural dam that holds back the water from Garibaldi Lake escaping and flooding into the valley below.
- When you take the average depth of the lake (119 m) and multiply by the surface area of the lake (9.94 Km2), you convert the depth into kilometres, 0.119 km x 9.94Km2 = 1.8286Km3converting this into cubic meters is multiplying by 10003 m, 1.8286 x 10003 = 1,828,600,000m3 which is equal to 1,828,600,000,000 L. The Barrier is holding about 1,828,600,000,000 L of water.
- The maximum depth of the lake is 258.7 m and the Barrier height is 243 m so the difference between the bottom of the lake to the beginning of the Barrier is 15.7m. If the Barrier was faulted, depending on how big or a crack and where this is would determine how much water would escape and how fast. If all the water that the Barrier was holding would escape there would still be a depth 15.7m containing water in the Lake so not all the water would escape. If the water was only 119m deep, a depth of only 103.3m of water would escape whereas if the depth was 258.7m, a depth of 243m of water would escape.