About Castner Falls
Castner Falls is a named waterfall in Cascade County, Montana, located about 16 miles south of Sun Prairie. The U.S. Geological Survey records it on the Truly 7.5-minute topographic quadrangle at 47°18′17″ N, 111°29′49″ W (47.30477, -111.49694). Named features close by in the federal gazetteer include Geyser Creek (stream, under 0.1 mi) and Flat Creek (stream, under 0.1 mi). The nearest other waterfall in this directory is Black Eagle Falls, 19 miles to the northeast.
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Weather at Castner Falls
Full NWS forecastForecast for the waterfall's exact location, not the nearest town. Mountain weather can change quickly.
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Source: National Weather Service.
Conditions at Castner Falls
Sun and Daylight Today
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Times in Denver time. Canyons and steep valleys lose direct sun earlier.
Elevation
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At the mapped waterfall point, from the USGS 3D Elevation Program. Expect cooler temperatures than in nearby towns at lower elevation.
Nearest Stream Gauge
Checking for USGS gauges within about 8 miles...
Live discharge in cubic feet per second (ft³/s). The gauge may be on a different stream than the falls; use the trend as a rough guide to how much water is running in the area.
Map and Directions
The marker shows the USGS-recorded position of Castner Falls. Trailheads and parking can be some distance from the falls themselves, so plan your route with an up-to-date trail map.
Named Landmarks Nearby
These named features from the USGS Geographic Names Information System lie within two miles of Castner Falls. Stream positions mark the stream's mouth as recorded by USGS.
- Geyser Creek — stream, under 0.1 mi
- Flat Creek — stream, under 0.1 mi
Before You Visit
- Water levels change quickly. Flow is usually strongest after rain and during snowmelt; see the best time to visit waterfalls.
- Stay back from the brink and off wet rock. Our waterfall safety guide covers the most common hazards.
- Check land ownership and access before you go. Some named falls sit on private property or in areas without a maintained trail.
- Download offline maps and save the coordinates 47.30477, -111.49694. Use our waterfall hike packing list.
Waterfalls Near Castner Falls
Frequently Asked Questions
Where is Castner Falls located?
Castner Falls is in Cascade County, Montana, about 16 miles south of Sun Prairie. Its coordinates are 47.30477, -111.49694 (47°18′17″ N, 111°29′49″ W).
What town is closest to Castner Falls?
The closest town with 1,000 or more residents is Sun Prairie, MT, about 16 miles away in a straight line. Driving distance is usually longer, so check the route before you go.
What waterfalls are near Castner Falls?
The closest is Black Eagle Falls (19 mi northeast). Others within reach include Buffalo Falls (20 mi), Colter Falls (historical) (21 mi), and Rainbow Falls (21 mi).
Which USGS topographic map shows Castner Falls?
Castner Falls appears on the USGS Truly 7.5-minute quadrangle. You can view it in The National Map viewer or download the US Topo sheet for offline navigation.