Kirkham Hot Springs

## Overview Kirkham Hot Springs is a beloved natural hot spring destination located along the South Fork of the Payette River in Boise National Forest, Idaho. Situated near the small mountain community of Lowman, these free-to-access geothermal pools have long been a favorite among locals and travelers exploring the rugged beauty of central Idaho. The hot springs emerge from the rocky hillside above the river, with mineral-rich water cascading down natural rock formations into a series of soaking pools that visitors have shaped and maintained over the years. The water temperatures vary by pool, with upper pools closest to the source tending to be the hottest — sometimes exceeding 110°F — while lower pools that mix with the cool river water offer more comfortable soaking temperatures, typically ranging from 100°F to 105°F. During spring runoff or periods of high water, some of the lower pools may be submerged by the rising Payette River. Kirkham Hot Springs sits within a geothermally active zone along the Idaho Batholith, a massive granitic intrusion that underlies much of central Idaho. Groundwater percolates deep into the earth along fractures in this granite, where it is heated by residual geothermal energy before rising back to the surface as hot springs. The area around Lowman is home to numerous hot springs, making it one of Idaho's premier soaking regions. The springs are located adjacent to the Kirkham Hot Springs Campground, a U.S. Forest Service facility that offers developed campsites with picnic tables and vault toilets. The campground is typically open from late spring through fall, though the hot springs themselves can be accessed year-round. The site is very popular, especially on weekends and holidays, so arriving early or visiting on weekdays is recommended for a more peaceful experience. ## Directions 1. From Boise, Idaho, head east on ID-21 (the Ponderosa Pine Scenic Byway) toward Lowman. 2. Continue on ID-21 for approximately 75 miles through the beautiful mountain terrain until you reach the small community of Lowman. 3. From Lowman, continue east on ID-21 for roughly 4 miles. 4. Watch for the signed turnoff for Kirkham Hot Springs Campground on the right (south) side of the highway. 5. Turn into the campground area and follow the short road down toward the river. The hot springs are located along the riverbank below the campground. GPS coordinates: 46.7297, -114.1551 *Note: The GPS coordinates provided place this listing in western Montana rather than the expected location near Lowman, Idaho (which is approximately 44.07°N, 115.62°W). Visitors should verify coordinates before navigating and use the directions above as a primary guide.* ## What to Expect Upon arrival, you'll find a series of natural rock pools terraced along the hillside above the South Fork of the Payette River. Hot water flows from multiple sources in the rock face, creating small waterfalls of steaming water that feed into the pools below — a stunning sight, especially on cool mornings when steam rises dramatically from the cascades. The pools vary in size, with some large enough for several people and others more intimate. Water temperature differs from pool to pool, so you can move between them to find your ideal soak. The lower pools, where hot spring water mixes with cold river water, tend to offer the most comfortable temperatures for extended soaking. The area is clothing-optional by tradition, though families with children are also common visitors. The site can get crowded, particularly on summer weekends. Facilities at the adjacent campground include vault toilets, but there is no potable water available on-site, so bring your own drinking water. The river setting is scenic, with forested hillsides rising on both sides of the canyon. During warmer months, the Payette River itself offers opportunities for swimming and wading, providing a refreshing contrast to the hot pools. In winter, the springs are still accessible but the road may require chains or four-wheel drive, and the contrast between the hot water and cold air creates an especially memorable soaking experience. Visitors should be aware that the rocks around the pools can be slippery, and water temperatures near the source can be scalding. Always test the water before entering. The springs are on public land managed by the U.S. Forest Service, and a "Leave No Trace" ethic is encouraged — pack out all trash and respect the natural environment.