River Report

Oconto River river

2 streamgauges 48% of normal Last updated 2026-05-30
Aggregate flow
995cfs
% of normal
48%
Daily volume
1,974AF
Seasonal avg
2,056cfs

Total streamflow across the Oconto River was last observed at 995 cfs, and is expected to yield approximately 1,974 acre-ft of water today; about 48% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 2,056 cfs, with recent peaks last observed on 2019-04-20 when daily discharge volume was observed at 11,130 cfs.

Maximum discharge along the river is currently at the Oconto River Near Oconto reporting a streamflow rate of 518 cfs. This is also the highest stage along the Oconto River, with a gauge stage of 4.66 ft at this location. This river is monitored from 2 different streamgauging stations along the Oconto River, the highest being situated at an altitude of 741 ft, the Oconto River Near Gillett.

Max discharge

Oconto River Near Oconto

518cfs
Highest stage

Oconto River Near Oconto

4.66ft
Highest-elevation gauge

Oconto River Near Gillett

741ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Oconto 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 Oconto 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)
Oconto River Near Gillett WI
USGS 04071000
477 1.43 -4.6 68% 183 4,440 741
Oconto River Near Oconto WI
USGS 04071765
518 4.66 -24.1 67% 113 6,690 609
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

Oconto River

The Oconto River is located in northeastern Wisconsin and flows for approximately 56 miles before emptying into Green Bay. The river has a rich history, with evidence of human habitation dating back at least 10,000 years. Today, the river is used for a variety of purposes, including recreation and agriculture. There are several small reservoirs and dams along the river, including the Bond Falls Reservoir and the Gillett Reservoir. These structures provide hydroelectric power, as well as flood control and recreation opportunities. The river is popular for fishing and kayaking, and supports a variety of wildlife, including muskellunge, walleye, and bald eagles. The Oconto River is an important resource for the surrounding communities, and is managed to balance its many uses.

Around the river

Recreation along the Oconto River

Fishing access and paddle runs Snoflo tracks within the watershed.

Track the Oconto 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 Oconto River

Where does the data for the Oconto 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.