River Report

Milk River river

8 streamgauges 46% of normal Last updated 2026-05-22
Aggregate flow
1,585cfs
% of normal
46%
Daily volume
3,144AF
Seasonal avg
3,431cfs

Total streamflow across the Milk River was last observed at 1,585 cfs, and is expected to yield approximately 3,144 acre-ft of water today; about 46% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 3,431 cfs, with recent peaks last observed on 2018-04-24 when daily discharge volume was observed at 72,890 cfs.

Maximum discharge along the river is currently at the Milk River At Havre Mt reporting a streamflow rate of 1,080 cfs. However, the streamgauge with the highest stage along the river is the Milk River Near Harlem Mt with a gauge stage of 5.2 ft. This river is monitored from 8 different streamgauging stations along the Milk River, the highest being situated at an altitude of 2,656 ft, the Milk River At Eastern Crossing Of Int Bndry.

Max discharge

Milk River At Havre Mt

1,080cfs
Highest stage

Milk River Near Harlem Mt

5.2ft
Highest-elevation gauge

Milk River At Eastern Crossing Of Int Bndry

2,656ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Milk River. Use the range buttons to zoom in on a specific period.

Total streamflow

Sum of all monitored streamgauges · daily

Per-gauge breakdown

Every streamgauge along the Milk River

All 8 USGS gauges Snoflo tracks for this river, with current flow, stage, recent change, percent of normal, and the gauge's all-time min / max. Click any header to sort. Cells are heatmapped relative to the column min/max -- darker blue = higher.

Streamgauge Streamflow (cfs) Gauge stage (ft) 24h Δ (%) % Normal Min (cfs) Max (cfs) Elevation (ft)
Milk River At Eastern Crossing Of Int Bndry MT
USGS 06135000
593 4.15 0.9 84% 0 4,060 2,656
Milk River At Havre Mt MT
USGS 06140500
1,080 3.25 8.3 144% 1 7,490 2,468
Milk River Near Harlem Mt MT
USGS 06154100
413 5.20 0.5 70% 1 7,490 2,329
Milk River Near Dodson Mt MT
USGS 06155030
18 3.31 0.0 14% 0 10,500 2,267
Milk River At Malta Mt MT
USGS 06155500
66 1.45 3.3 32% 2 10,100 2,224
Milk River At Juneberg Bridge Nr Saco Mt MT
USGS 06164510
224 3.23 -7.8 69% 32 14,200 2,147
Milk River At Tampico Mt MT
USGS 06172310
40 1.91 43.8 10% 1 21,100 2,101
Milk River At Nashua Mt MT
USGS 06174500
89 1.54 -26.2 16% 0 25,200 2,036
Annual peaks

Maximum streamflow discharge by year

The single highest aggregate discharge recorded each year. Spotting the multi-year trend reveals droughts vs. wet cycles long before the headline daily flow does.

Annual peak discharge

From the river's full record · one point per water year

Profile

Streamflow elevation profile

Each bubble is one gauge along the river, plotted by current streamflow (x-axis) vs elevation (y-axis), sized by gauge stage. Reading top-to-bottom traces the river from headwaters down to its mouth -- you can see flow accumulate as elevation drops.

Elevation vs streamflow

One point per monitored gauge · bubble size = gauge stage

About this river

Milk River

The Milk River is a tributary of the Missouri River that spans 729 kilometers and flows through Montana and Alberta, Canada. The river is named after its milky appearance, which is caused by suspended sediments from glacial runoff. The Milk River was historically important to the indigenous Blackfeet people, who relied on it for water and hunting. The St. Mary River Dam and Reservoir, located in Montana, was built in 1921 for irrigation purposes and is the largest reservoir on the Milk River. Other reservoirs include the Fresno Reservoir and Nelson Reservoir. The Milk River is used for recreational activities like fishing, hunting, and camping, and supports agricultural practices in the surrounding areas. In recent years, drought and climate change have led to decreased water levels and concerns about the river's future sustainability.

Track the Milk River in the Snoflo app

Set per-gauge push alerts (e.g. "alert me when flow at the Russian R Nr Healdsburg crosses 5,000 cfs"), and Snoflo's iOS app pushes the moment USGS reports the crossing.

FAQ

About the Milk River

Where does the data for the Milk River come from?

Streamflow and gauge stage data are sourced from the U.S. Geological Survey (USGS) National Water Information System. The aggregate flow shown at the top of the page is computed by Snoflo as the sum of all monitored gauges along the river.

How is "percent of normal" calculated?

Today's aggregate streamflow is compared to the historical average aggregate streamflow on this calendar day across the river's full record. 100% means right on average; values above 100% indicate above-normal flow (wet year); values below indicate below-normal (dry year or drought).

Why are some gauges showing very different flows?

Gauges along a river measure flow at different points: headwater gauges read what's coming off the snowpack or mountain runoff; downstream gauges integrate everything upstream, including tributary inputs. Wide spreads usually mean a tributary is contributing significantly between gauges.

What's the elevation profile chart showing?

Each bubble is one gauge along the river, plotted by streamflow (x-axis) and elevation (y-axis), sized by gauge stage. Reading top-down traces the river from headwaters to mouth -- you can see flow build as elevation drops.

Can I get alerts when a specific gauge crosses a threshold?

Yes -- alerts are managed in the Snoflo iOS app on a per-gauge basis. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.