Grand Teton National Park saw a fourth straight year of record visitation in 2017, thanks in part to the total solar eclipse in August/Kurt Repanshek

Grand Teton National Park saw record visitation in 2017, the fourth straight year of increasing turnouts, according to the park staff.

The park received more than 4.9 million total visits, a 3 percent increase from the previous record set in 2016. Visitation reached monthly records in June, August, September, and October. August, which included the total solar eclipse viewable from throughout the park, had 65,000 more visits than the previous record August of 2015.

The record visitation is part of a longer term upward trend that has seen park visitation increase by more than 1 million visits, or 27 percent, during the past five years. The record is also part of a nationwide trend that has brought record numbers to national parks across the country.

The busy year for the park was highlighted by the total solar eclipse on August 21. The park saw a significant increase in visitation on the days leading up to the eclipse, as well as the day following the event. Park managers estimate the long weekend was the busiest period in the park's history. Park concession-operated campgrounds were near capacity, and for the first time in park history, all backcountry permits were issued for three days straight.

Visitation numbers are derived from traffic counter data. The numbers recorded by these counters are run through an algorithm to determine an estimated visitation number. The methodology has been consistent since 1992, which allows park managers to compare visitation levels from year to year.

In addition to the total visitation number, park traffic counters also calculate a "recreational visitation" statistic that excludes most traffic on U.S. Highway 26/89/191. In terms of recreational visitation, the park received 3.3 million visits in 2017, 1 percent more than the previous record number the park received in 2016.