YOSEMITE (CBS SF) – Park officials say the tallest waterfall in North America – Yosemite Falls – will likely run dry about two months early this year.

With the Sierra snowpack at a record low, tourists are rafting – for now – on the Merced River at a level about three feet lower than normal. That will have to stop when the water runs out.

A walk through the Yosemite Valley floor also reveals hundreds of browning trees, the result of bark beetles which have spread across the state during the 4th year or the drought.

In her video report, Danielle Nottingham looks at the new view for┬átourists are seeing at California’s National Parks this year.