River Report

Gros Ventre River river

2 streamgauges 100% of normal Last updated 2026-05-30
Aggregate flow
1,830cfs
% of normal
100%
Daily volume
3,630AF
Seasonal avg
1,827cfs

Total streamflow across the Gros Ventre River was last observed at 1,830 cfs, and is expected to yield approximately 3,630 acre-ft of water today; about 100% of normal. Average streamflow for this time of year is 1,827 cfs, with recent peaks last observed on 2011-07-01 when daily discharge volume was observed at 8,710 cfs.

Maximum discharge along the river is currently at the Gros Ventre River At Kelly Wy reporting a streamflow rate of 1,830 cfs. However, the streamgauge with the highest stage along the river is the Gros Ventre River At Zenith Wy with a gauge stage of 19.89 ft. This river is monitored from 2 different streamgauging stations along the Gros Ventre River, the highest being situated at an altitude of 6,650 ft, the Gros Ventre River At Kelly Wy.

Max discharge

Gros Ventre River At Kelly Wy

1,830cfs
Highest stage

Gros Ventre River At Zenith Wy

19.89ft
Highest-elevation gauge

Gros Ventre River At Kelly Wy

6,650ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Gros Ventre 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 Gros Ventre River

All 2 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)
Gros Ventre River At Kelly Wy WY
USGS 13014500
1,830 6.56 18.1 123% 88 6,630 6,650
Gros Ventre River At Zenith Wy WY
USGS 13015000
1,360 19.89 40.6 140% 0 4,610 6,318
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

Gros Ventre River

The Gros Ventre River is a tributary of the Snake River, located in western Wyoming. The river is approximately 80 miles long and has a drainage basin of 800 square miles. The river is named after the Gros Ventre people, a Native American tribe that once inhabited the area. The river’s flow is primarily fed by snowmelt and rainfall. There are no major reservoirs or dams on the Gros Ventre River, but the river does provide water for irrigation and supports a variety of recreational activities such as fishing, kayaking, and camping. The river is also home to a variety of wildlife including moose, elk, and bald eagles.

Around the river

Recreation along the Gros Ventre River

Fishing access and paddle runs Snoflo tracks within the watershed.

Track the Gros Ventre 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 Gros Ventre River

Where does the data for the Gros Ventre 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.