Boiling River at Mammoth,YNP — Water Level & Flow
USGS gauge 06190540 reports gage height, discharge and water temperature from Boiling River at Mammoth,YNP in WY. Big Buoy shows the latest reading with a 7-day hydrograph, alongside National Weather Service flood categories where they are published.
Latest reading
As of October 19, 2026 at 18:15 UTC, USGS gauge 06190540 on Boiling River at Mammoth,YNP recorded gage height 1.10 ft, discharge 20 cfs, and water temperature 124°F.
Yellowstone National Park river levels — Boiling River at Mammoth,YNP is one of the gauges covered there.
Stage vs. flow — how to read a river gauge
Discharge (flow, in cubic feet per second) is comparable between gauges and is usually the better number for judging whether a river is up or down. Gage height is the water surface in feet above each gauge's own local datum, so it is local: the same 4 ft describes different rivers at two different gauges, and it is not the depth of the water. A gauge that reports nothing is shown as not reported — never as zero.
Frequently asked questions
- What is the water level on Boiling River at Mammoth,YNP?
- Gage height at Boiling River at Mammoth,YNP was 1.10 ft. Measured October 19, 2026 at 18:15 UTC at USGS gauge 06190540 (Boiling River at Mammoth,YNP). Gage height is the water surface above this gauge’s own local datum, not the depth of the river.
- What is the flow on Boiling River at Mammoth,YNP?
- Discharge at Boiling River at Mammoth,YNP was 20 cubic feet per second. Measured October 19, 2026 at 18:15 UTC at USGS gauge 06190540 (Boiling River at Mammoth,YNP). Discharge is comparable between gauges in a way gage height is not.
- What is the water temperature in Boiling River at Mammoth,YNP?
- Water temperature at Boiling River at Mammoth,YNP was 124°F. Measured October 19, 2026 at 18:15 UTC at USGS gauge 06190540 (Boiling River at Mammoth,YNP).
- Where is USGS gauge 06190540?
- Boiling River at Mammoth,YNP (USGS 06190540) reports from 44.985°N, 110.689°W in WY.
- How often does USGS gauge 06190540 update?
- This station records about every 15 minutes and transmits hourly, so a reading can be up to an hour old when you see it. Readings past three times the reporting interval are shown as last reported rather than as current conditions.
Data: USGS National Water Information System. Flood categories: NOAA/National Weather Service.