Nearly 50 years after being filled, Lake Powell recently reached its lowest point.

Since then, the lake’s seasonal uptrend in water levels has begun.

Lake Powell hit a new low of 3520.46 feet on March 13, data from the Bureau of Reclamation shows.

However, the following eight days all saw more water flow into the lake than out of it, resulting in just under half a foot of rise in water levels. The increase is the first sustained gains the lake has seen since May of last year.