River Report

Moreau River river

3 streamgauges 321% of normal Last updated 2026-05-30
Aggregate flow
5,128cfs
% of normal
321%
Daily volume
10,172AF
Seasonal avg
1,596cfs

Total streamflow across the Moreau River was last observed at 5,128 cfs, and is expected to yield approximately 10,172 acre-ft of water today; about 321% of normal. River levels are high. Average streamflow for this time of year is 1,596 cfs, with recent peaks last observed on 2017-05-01 when daily discharge volume was observed at 32,710 cfs.

Maximum discharge along the river is currently at the Moreau River Near Jefferson City reporting a streamflow rate of 5,050 cfs. This is also the highest stage along the Moreau River, with a gauge stage of 13.14 ft at this location. This river is monitored from 3 different streamgauging stations along the Moreau River, the highest being situated at an altitude of 2,248 ft, the Moreau R Near Faith Sd.

Max discharge

Moreau River Near Jefferson City

5,050cfs
Highest stage

Moreau River Near Jefferson City

13.14ft
Highest-elevation gauge

Moreau R Near Faith Sd

2,248ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Moreau 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 Moreau River

All 3 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)
Moreau R Near Faith Sd SD
USGS 06359500
11 0.77 -27.0 26% 0 11,700 2,248
Moreau R Near Whitehorse Sd SD
USGS 06360500
67 2.57 -22.9 35% 0 19,900 1,670
Moreau River Near Jefferson City MO
USGS 06910750
5,050 13.14 -18.7 77% 0 32,500 547
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

Moreau River

The Moreau River is a 200-mile-long tributary of the Missouri River that runs through Wyoming and South Dakota. It was named after Jean-Baptiste Moreau, an early French fur trader. The river's hydrology is dominated by snowmelt and summer rainfall, with peak flows occurring in May and June. The Moreau River is home to several dams, including the Shadehill Dam and Reservoir, which were built in the 1940s for flood control and water conservation purposes. The reservoir also serves as a popular recreational destination for fishing, boating, and camping. The river is also used for agricultural purposes, with irrigation canals diverting water to nearby farmland. The Moreau River has a rich history, with evidence of human habitation dating back over 10,000 years. Today, it remains an important resource for both people and wildlife in the region.

Track the Moreau 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 Moreau River

Where does the data for the Moreau 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.