USGS 12323700 Mill Creek at Opportunity, MT

PROVISIONAL DATA SUBJECT TO REVISION

Click to hidestation-specific text
Flood Tracking - Stage Flood Tracking - Discharge Gage-height Corrections Base Rating Shifted Rating
(About shift-adjusted ratings).
Station operated by the USGS Wyoming-Montana Water Science Center in cooperation with U.S. Environmental Protection Agency.
Leaving USGS: U.S. Coast Guard boating safety tips.
This station managed by the Helena Field Unit.

Available Parameters Available Period
  
2025-01-01  2026-07-31
2003-04-02  2026-07-31
2007-10-01  2026-07-31
2016-10-01  2022-11-02







 (7)
 
  -- or --

 

 
Summary of all available data for this site
Instantaneous-data availability statement

Temperature, water, degrees Celsius
Most recent instantaneous value: 14.7 07-31-2026   09:00 MDT
Graph of Temperature, water, degrees Celsius

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Discharge, cubic feet per second
Most recent instantaneous value: 4.60 07-31-2026   09:00 MDT
Graph of Discharge, cubic feet per second

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Daily discharge, cubic feet per second -- statistics for Jul 31 based on 23 water years of record more
Min
(2021)		 25th
percen-
tile		 Most Recent
Instantaneous
Value Jul 31		 Median Mean 75th
percen-
tile		 Max
(2011)
1.55 2.9 4.60 7.7 11 15 57.2

Gage height, feet
Most recent instantaneous value: 2.34 07-31-2026   09:00 MDT
Graph of Gage height, feet

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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), [YSI 6-series]
 
-- Data temporarily unavailable for the time period specified --