New satellite images show how much Lake Powell has changed. NASA compared pictures from September 2017 and September 2026. The large American reservoir reached a record low in August 2026. Its level continued falling in early September. Very little mountain snow collected during the previous winter. Unusual warmth also reduced the snow available to melt and feed the river.
The Colorado River supplies water and electricity to more than 40 million people. It also supports farming. Officials released water from another reservoir to help Lake Powell. They also reduced the amount flowing out. These steps aimed to keep the lake above the level needed for power generation. Satellite information helps managers monitor drought and decide how to respond.