Marias River near Loma, MT

Missouri River & Headwaters (Montana) · USGS gauge 06102050 · Updated Oct 25, 11:23 AM PDT · USGS data, provisional

All 2 Marias River gauges in Montana

Fishable/Floatable504 cfs● steady (-10% in 24 h)

Reading time: Oct 25, 11:15 AM PDT · Provisional data

Flow is in a typical range for the date. Rivers are generally easiest to fish and float when they are near their normal flow, but this status says nothing about water clarity, hatches, hazards such as wood in the river, or dam releases.

Vs. normal for this date
51st percentile
Typical range (25th–75th)
450–768 cfs
Median for this date
503 cfs
7-day low / high
471 / 572 cfs

Water temperature & gage height

Gage height (stage)
1.19 ft as of Oct 25, 11:15 AM PDT · USGS 00065 · Provisional

Context only: these readings do not affect the status above, which is based on flow (cfs) alone. Gage height is the water level above this gauge's own reference point, not water depth, and can't be compared between gauges. Temperature converted from °C to °F by Flowcast. Source: USGS, provisional data.

Plain-language explanation

Marias River near Loma is flowing at 504 cubic feet per second (cfs) as of Oct 25, 11:15 AM PDT. That is in the normal range for this time of year: higher than about 51% of the daily flows this gauge has recorded for this date (give or take 7 days) over 38 years of record (1959–2026).

The middle half of those historical flows runs from 450 to 768 cfs, with a median of 503 cfs; the lowest 10% of days are at or below 290 cfs and the highest 10% at or above 1,060 cfs.

Over the last 24 hours the flow has been steady (-9.7%). In the last 7 days it ranged from 471 to 572 cfs.

Why this status: Flow is within the range this gauge normally sees at this time of year (or the deviation is too small in absolute terms to matter).

Quick answers

Is the Marias River near Loma fishable today?

Flowcast's status for the Marias River near Loma is “Fishable/Floatable”: flow is 504 cfs, within the range this gauge normally sees at this time of year, at the 51st percentile for this date (as of Oct 25, 11:15 AM PDT). That describes flow only. It says nothing about water clarity, temperature, fish activity, access or fishing regulations.

What is the current flow of the Marias River near Loma?

504 cubic feet per second at USGS gauge 06102050 as of Oct 25, 11:15 AM PDT, provisional data.

Is the Marias River near Loma too high or too low right now?

Neither: it is inside the typical range for the date (450 to 768 cfs).

Is the Marias River near Loma rising or falling?

Over the last 24 hours the flow has been steady (-9.7%).

What is a normal flow for the Marias River near Loma in October?

For this date (give or take 7 days) the median is 503 cfs and the middle half of days runs 450 to 768 cfs, over 38 years of USGS record.

7-day trend

typical range for this date (25th-75th pct)463494524555586Mon 10/19Tue 10/20Wed 10/21Thu 10/22Fri 10/23Sat 10/24Sun 10/25

Hourly flow in cfs, Pacific time. The shaded band is the typical range (25th–75th percentile) for this date, shown when it falls within the chart.

Day (Pacific)Mean cfsPercentileStatus that day
Mon Oct 1948635thFishable/Floatable
Tue Oct 2049139thFishable/Floatable
Wed Oct 2148938thFishable/Floatable
Thu Oct 2249040thFishable/Floatable
Fri Oct 2350952ndFishable/Floatable
Sat Oct 2454860thFishable/Floatable
Sun Oct 25 (so far)50350thFishable/Floatable

Seasonal context

1002005001,0002,0005,00010,000JanFebMarAprMayJunJulAugSepOctNovDec

Shaded band: 10th–90th percentile of daily flows through the year; dashed line: median. Log scale. Dot: today's flow. Based on 38 years of USGS daily data (1959–2026).

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Official resources

Links go to the agencies' own websites and were checked as working. Flowcast does not summarize fishing or boating rules: regulations and closures change, and the agency pages are the authority.

About this gauge

USGS site
USGS-06102050
USGS name
Marias River Near Loma Mt
Drainage area
7,027 sq mi
Location
47.9459, -110.5808
Record in this analysis
1959–2026
Data from the U.S. Geological Survey (USGS). Readings are provisional and subject to revision. Flowcast statuses are automated comparisons with each gauge's own history, not safety ratings or fishing reports. Check local conditions, weather, regulations and closures before you go. Rivers can change quickly.

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