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Waterfall

Denman Falls

Washington

About

Denman Falls is a waterfall in Washington's Mount Rainier National Park, within the Mount Rainier Wilderness. The National Park Service manages the land, and the nearest town is Ashford, about 7.6 miles away. The falls sit at roughly 3,544 feet. Summer is the most comfortable time to visit. Typical averages from a nearby weather station at Longmire show July and August highs around 75 to 76°F, with only seven or eight wet days a month. That station sits about 780 feet lower, so temperatures at the falls run a little cooler. St Andrews Creek is just 0.1 mile away, and the South Puyallup River offers canoeing about 0.6 mile off. North Puyallup is a hike about a mile away, and Cougar Rock Campground is about 7.2 miles away for an overnight stay.

Waterfall Facts

Elevation

3,544 ft

Land manager

National Park Service

Elevation from USGS 3D Elevation Program terrain data (about 10 m resolution).

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Location

Denman Falls

Washington

Name and location: U.S. Geological Survey, Geographic Names Information System (GNIS). Elevation: USGS 3D Elevation Program. View the GNIS record.

Facts about this place

When to go

Best time to go: May–Sep. The mildest months here, with typical highs of 60–76°F and lows of 37–46°F.

Typical monthly averages (not a forecast) from the Longmire Rainier Nps, WA weather station, 7.5 mi away. High / low in °F, and days with snow.

  1. Jan37° high26° low9 days with snow
  2. Feb40° high26° low8 days with snow
  3. Mar45° high28° low8 days with snow
  4. Apr51° high31° low4 days with snow
  5. May60° high37° low1 days with snow
  6. Jun66° high41° low
  7. Jul75° high46° low
  8. Aug76° high46° low
  9. Sep69° high42° low
  10. Oct55° high35° low1 days with snow
  11. Nov42° high29° low5 days with snow
  12. Dec36° high25° low10 days with snow

Source: NOAA NCEI U.S. Climate Normals 1991–2020

Where it is

Nearest town
Ashford, Washington · 7.6 mi
Managed by
National Park Service

Source: Wilderness.net boundaries; NPS Land Resources boundaries; USGS PAD-US 4.1; USGS GNIS populated places

Conditions

Active alerts for Mount Rainier National Park as of Oct 9, 2026:

Source: NPS Alerts API

Nearby

Source: Roamze catalog (indexable pages within 10 miles, PostGIS distance)

    Denman Falls — Waterfall in Washington | Roamze