Tappan Falls Guide Before Visiting 2026 Updated

Tappan Falls is a waterfall in Lemhi County, Idaho, about 36 miles northwest of Challis. This guide covers what to check, bring and expect before you go, using visitor ratings, official USGS records and live conditions for this exact location.

At a glance

Location

Lemhi County, ID

Nearest town

Challis (36 mi)

Coordinates

44.87889, -114.74944

USGS topo

Aparejo Point quad

Getting there

Tappan Falls sits about 36 miles northwest of Challis in Lemhi County. Navigate to the coordinates 44.87889, -114.74944, which mark the waterfall itself; the trailhead or parking area may be some distance away.

Open directions in Google Maps or Apple Maps, or view the map on the Tappan Falls listing. Navigation apps sometimes route onto seasonal forest roads, so check road status if you are heading into the mountains.

Ownership in Idaho varies by region. Shoshone Falls is a city park in Twin Falls, while canyon falls around it mix city, state, private and federal land. Jump Creek Falls is on Bureau of Land Management land. In the mountains, most falls sit in national forests such as the Caribou-Targhee, Boise, Payette, Salmon-Challis, Nez Perce-Clearwater and Idaho Panhandle. Expect long gravel roads, seasonal closures and patchy cell service in central and north Idaho. Hazards include cold, swift snowmelt rivers, unstable basalt and canyon rims without railings, and slick rock in spray zones. Wildfire activity and smoke can close areas in late summer. Carry a paper map and plan fuel stops in remote counties.

What to bring

This checklist is tailored to Tappan Falls based on what visitors report and the conditions typical of Idaho. For the complete list, see our waterfall hike packing guide.

• Offline map and coordinates. Save 44.87889, -114.74944 and download offline maps; cell service is often weak near waterfalls.
• Shoes with real grip. Rock near falling water stays wet and slick even in dry weather.
• Water and a snack. More than you think you need, even for a short walk.
• A light rain layer. Spray from the falls and quick-moving showers can soak you.
• Warm layers. Northern and mountain weather changes quickly; spring and fall mornings can be near freezing.
• Headlamp. In case your visit runs later than planned; check sunset time in the conditions panel above.

How to prepare

Timing

Snowmelt makes late spring the peak season across Idaho. In the Snake River Canyon, Shoshone Falls usually runs fullest from about April into early June; later in summer, upstream diversions for irrigation can reduce it to a fraction of its spring volume. Mesa Falls and the Panhandle falls generally peak in May and June as mountain snow melts. Central Idaho's higher-elevation falls may not be reachable until roads and trails clear of snow, often in late June or July, and flows remain decent through midsummer. Late summer and early fall bring lower water, smoke from wildfires in some years, and fall color in the northern forests. Winter is quiet; some canyon falls form ice, but many mountain roads are closed or unplowed.

Safety

Stay behind railings and off wet rock, never climb on the falls, and keep children within arm's reach near the water. Check the weather panel above for flood or storm alerts before you set out; water levels can rise fast after upstream rain. Our waterfall safety guide covers the most common hazards.

Respect the place

Pack out everything you bring, stay on established paths to limit erosion, and leave rocks and plants where they are. See Leave No Trace at waterfalls.

History of the area

According to the U.S. Geological Survey's naming record: The name is associated with Tappan Gulch, which is named for Fred (1878-?) and Daisy Tappan (1908-1984), who homesteaded nearby.

Older maps and records also list it as Tappen Falls, Tappan Falls Rapid, and Tappin Falls.

The federal gazetteer describes it this way: 6 ft. high falls; on the Middle Fork Salmon River in the Salmon-Challis National Forest/Frank Church River of No Return Wilderness, 0.6 miles W of the mouth of Cove Creek; Sec. 19, T18N, R15E, Boise Meridian

Tappan Falls was entered in the Geographic Names Information System on March 27, 2017, and it appears on the USGS Aparejo Point 7.5-minute topographic map.

The U.S. Board on Geographic Names made a formal decision on its name on July 13, 2017.

Its neighbors on the map tell the story of the surrounding land: Cove Creek (stream, 0.5 mi), Grouse Creek (stream, 0.9 mi), Tappan Gulch (valley, 1.0 mi), and Camas Creek (stream, 1.5 mi).

Central Idaho Mountains. This is Idaho's wild interior, a sprawling granite highland broken by some of the deepest canyons in the country. Falls here range from roadside drops near Idaho City and Cascade to remote cascades in the Sawtooth and Salmon River country around Challis and Salmon. Idaho County holds the most, including Selway Falls, a powerful series of drops on the Selway River. Many falls in this region lie in national forest and wilderness, reached by long gravel roads or backcountry trails. The landscape rewards travelers who are comfortable with remote driving, limited services and changeable mountain weather.

Nearby waterfalls to add to your trip

Summary

Tappan Falls about 36 miles northwest of Challis is a documented waterfall in the federal gazetteer. Check the live forecast and stream gauge above, save the coordinates for offline use, and pack for wet, uneven ground. Ratings, hours and access can change, so confirm conditions with the land manager before you drive out.

See the full Tappan Falls listing for the map, photos and nearby landmarks.