A damaged dam is in danger of bursting. Most buildings are damaged or destroyed. Millions are without power, and the communication network is crippled.
"Some of the dam has fallen apart," Rosselló said. "Now we are making sure that we can assess if the other part will fall down as well. It represents a great danger for about an estimated 70,000 people."
A doctor at Canovanas Medical Center -- one of the few hospitals with a working generator -- said they were running out of fuel to keep it going. Dr. Norbert Seda told CNN that the center only had 2-3 days left of medical supplies and medicine.
"We have centers that will distribute water and food, we've already started getting shipments. Today, as a matter of fact, we had a million liters of water come in to Puerto Rico. We have half a million servings of food and other resources." Rosselló also said the island has enough fuel for the next 20 days.