Canyon Ferry Lake is at 3,785.2 ft and rose 0.1 ft in the last day.
Current Water Level
3,785.2 ft
1,153.73 m · Reservoir elevation
Compared with the reading at Nov 1, 1:00 AM
Delayed- Measured
- Nov 2, 2026 12:00 AM MST
- Retrieved
- Nov 3, 2026 1:03 PM MST
- Data Source
- USBR (opens in a new tab)
- Datum
- Project datum (below NGVD29/NAVD88 per R
Water Level Chart
Reservoir elevation from Oct 28, 2026 to Nov 2, 2026: started at 3,784.92 ft and ended at 3,785.19 ft; low 3,784.92 ft, high 3,785.19 ft.
Gaps in the line are periods with no readings; they are not filled in. View data table
24 Hour Change
+0.10 ft (rising)
from 3,785.09 ft on Nov 1
7 Day Change
n/a change not available
No comparable reading
30 Day Change
n/a change not available
No comparable reading
Conditions & Warnings
Forecast
- This Afternoon50°FMostly SunnyESE 5 to 8 mph0% rain
- Tonight30°FPartly CloudyENE 1 to 5 mph0% rain
- Wednesday50°FMostly SunnyWNW 1 mph0% rain
- Wednesday Night30°FMostly ClearESE 1 to 7 mph0% rain
National Weather Service forecast near York, MT, retrieved 41 minutes ago.
Water Temperature
No official water temperature gauge is linked to this lake.
No active National Weather Service warnings for this location as of 41 minutes ago.
Other Measurements
| Reservoir storage | 1,501,180 ac-ft | +3,070 ac-ft (rising) | USBR · Nov 2, 12:00 AM |
|---|
About Canyon Ferry Lake
Canyon Ferry Lake is a reservoir on the Missouri River east of Helena, Montana, impounded by Canyon Ferry Dam. The dam is a Bureau of Reclamation facility.
Canyon Ferry Lake Location
Canyon Ferry LakeLewis and Clark, Montana
Map location is approximate. Map data © OpenStreetMap contributors.
Compare & Share
Compare with other lakesOfficial Source & Methodology
-
Reservoir elevation
Bureau of Reclamation RISE · ID
295· Project datum (below NGVD29/NAVD88 per R Official page -
Reservoir storage
Bureau of Reclamation RISE · ID
295· Project datum (below NGVD29/NAVD88 per R · alternate series Official page
The headline number is the reservoir elevation reported by Bureau of Reclamation RISE (typically daily). The "Measured" time is when the agency recorded it; "Retrieved" is when this site last downloaded it.
Recent readings are provisional and may be revised by the agency. Wind, waves and dam operations can change the level between readings. This page is not a flood warning or navigation service; for safety information contact the lake operator and the National Weather Service.
Gauge verified 2026-10-26: Canyon Ferry Lake Dam Powerplant and Helena Valley Pumping Plant read elevation 3784.86 ft; storage 1490430 acre-ft. Coordinates are the gauge location. Confirm reference levels with the operator before publishing.