This aerial view of the Nile River (the area in blue), shows where the Nile flows today. The red circle is the Giza Plateau, the location of the most famous of all pyramids, Cheops. You can see that there is now a great distance between the Nile River and the pyramid complex. This is typical of all the pyramids along the Nile River in Egypt today, but at the time of their construction they were right by the Nile and had underground connections to the river, with giant storage chambers under them.
These are the three main pyramids on the Giza Plateau: Cheops, Chephren, and Menkaure, Cheops being the largest and most important.
The blue color represents the Nile River prior to the Aswan Dam, built in the 1950s.