Spiritual gifts are not innate, natural talents, like an ear for music or the ability to draw, but rather they are empowerments that the Holy Spirit gives to a believer to minister to the body in ways that were not possible by mere natural effort apart from the Holy Spirit.
In the design of a dam, the first step is the determination of various forces which acts on the structure and study their nature. Depending upon the situation, the dam is subjected to the following forces: 1. Water pressure. 2. Earthquake forces. 3. Silt pressure. 4. Wave pressure. 5. Ice pressure. 6.
Also, we copied what Mother Nature did in the past. During the last Ice Age (13,000+ years ago) the Cordilleran Ice Sheet blocked the Columbia River at the spot where the dam sits today. The ice formed a huge dam about 500 feet taller than Grand Coulee Dam.