Glacier National Park reminds visitors that 120-day advance timed entry vehicle reservations become available on Recreation.gov starting February 13, 2025, at 8 am Mountain Time.
In 2018, the National Park Service discovered a substantial rise in nutrient concentrations in Lake McDonald, one of Glacier’s most visited lakes. Increases in nutrients, mainly nitrogen and phosphorus, can cause nuisance growth of algae, threatening the clarity of the park’s lakes, which are among the area’s biggest draws.