From the movie 10.5 Apocalypse....
The second part of the miniseries begins with Dr. Hill's rescue from the ruins of the Atlas Hotel just before it is swallowed up completely. At the same time, a massive fault line forms in North Dakota, passing through South Dakota, Nebraska, Kansas, and Oklahoma. If it reaches Houston, Texas and the Gulf of Mexico, as predicted, the mid-western plains will be covered by a new ocean, just as they were thousands of years ago. A massive evacuation of the region is ordered, as earthquakes strike Sedona, Arizona destroying the Chapel of the Holy Cross in the process. However, the (fictional) nuclear plant in Red Plains, Texas, is right in the fault's path. If it is destroyed, the entire area and hundreds of miles around will be contaminated by nuclear waste.
Dr. Earl Hill comes up with a desperate plan to divert the fault around the nuclear plant by opening up a secondary fault running east, by a controlled demolition which explosively ignites the massive natural gas reserves in the area. The main fault follows the new path around Red Plains, saving the nuclear plant. However, nothing can stop the fault altogether. Once again it turns south, slicing through the middle of Houston to reach the Gulf of Mexico. At the same time, the northern half of the fault has reached Hudson Bay. When the waters rush into the fault, they create a new ocean which splits the United States and Canada in half.
[link to en.wikipedia.org
Check out this scene from the movie.....See the nuclear reactor in the background at the beginning of the video? Pay attention to the end of the video.