River Report

Genesee River river

4 streamgauges 133% of normal Last updated 2026-05-17
Aggregate flow
12,317cfs
% of normal
133%
Daily volume
24,430AF
Seasonal avg
9,231cfs

Total streamflow across the Genesee River was last observed at 12,317 cfs, and is expected to yield approximately 24,430 acre-ft of water today; about 133% of normal. River levels are high. Average streamflow for this time of year is 9,231 cfs, with recent peaks last observed on 2014-05-17 when daily discharge volume was observed at 36,850 cfs.

Maximum discharge along the river is currently at the Genesee River At Avon Ny reporting a streamflow rate of 5,370 cfs. This is also the highest stage along the Genesee River, with a gauge stage of 14.08 ft at this location. This river is monitored from 4 different streamgauging stations along the Genesee River, the highest being situated at an altitude of 1,479 ft, the Genesee River At Wellsville Ny.

Max discharge

Genesee River At Avon Ny

5,370cfs
Highest stage

Genesee River At Avon Ny

14.08ft
Highest-elevation gauge

Genesee River At Wellsville Ny

1,479ft
Aggregate trend

River streamflow levels

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

All 4 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)
Genesee River At Wellsville Ny NY
USGS 04221000
417 5.17 -14.3 79% 17 38,500 1,479
Genesee River At Portageville Ny NY
USGS 04223000
1,480 10.22 -12.1 91% 70 90,000 1,090
Genesee River Near Mount Morris Ny NY
USGS 04227500
5,050 9.72 -5.0 213% 86 55,100 546
Genesee River At Avon Ny NY
USGS 04228500
5,370 14.08 -6.6 205% 133 16,500 516
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

Genesee River

The Genesee River is a 157-mile-long river that runs through western New York State. The river has played an important role in the region's history, serving as a transportation route for the Seneca people and as a source of power for early settlers. Today, the river is used for a variety of recreational activities, including fishing, boating, and hiking. There are several reservoirs and dams along the river, including the Mount Morris Dam, which was built by the US Army Corps of Engineers in the 1950s to control flooding. The river also provides water for agricultural uses, including irrigation and livestock watering. Despite its importance to the region, the Genesee River has faced challenges due to pollution and habitat degradation, leading to conservation efforts to protect the river's ecosystem.

Track the Genesee 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 Genesee River

Where does the data for the Genesee 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.

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Favorites and alerts are part of Snoflo Premium. Save rivers + gauges, set discharge thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

River-level alerts are configured per-gauge in the iOS app. Open any individual streamgauge from the table above and favorite it to set a discharge threshold.

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