River Report

Chemung River river

3 streamgauges 57% of normal Last updated 2026-05-31
Aggregate flow
3,970cfs
% of normal
57%
Daily volume
7,874AF
Seasonal avg
6,913cfs

Total streamflow across the Chemung River was last observed at 3,970 cfs, and is expected to yield approximately 7,874 acre-ft of water today; about 57% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 6,913 cfs, with recent peaks last observed on 2014-05-17 when daily discharge volume was observed at 106,400 cfs.

Maximum discharge along the river is currently at the Chemung River At Chemung Ny reporting a streamflow rate of 2,150 cfs. However, the streamgauge with the highest stage along the river is the Chemung River At Corning Ny with a gauge stage of 15.9 ft. This river is monitored from 3 different streamgauging stations along the Chemung River, the highest being situated at an altitude of 916 ft, the Chemung River At Corning Ny.

Max discharge

Chemung River At Chemung Ny

2,150cfs
Highest stage

Chemung River At Corning Ny

15.9ft
Highest-elevation gauge

Chemung River At Corning Ny

916ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Chemung 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 Chemung 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)
Chemung River At Corning Ny NY
USGS 01529950
142 15.90 -11.3 10% 97 228,000 916
Chemung River At Elmira Ny NY
USGS 01530332
1,820 2.11 -17.3 126% 112 36,500 836
Chemung River At Chemung Ny NY
USGS 01531000
2,150 4.40 -11.2 121% 152 42,400 798
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

Chemung River

The Chemung River is a 45-mile-long tributary of the Susquehanna River in New York and Pennsylvania. It has served as an important transportation route for Native American tribes and later, European settlers. The river flows through the cities of Elmira and Corning, and is used for recreational activities such as fishing, boating, and kayaking. The river's watershed covers 2,600 square miles and includes several reservoirs and dams, including the Chemung River Dam and the Harris Hill Dam. These structures help regulate the river's flow and provide water for agricultural purposes. In recent years, the Chemung River has seen improvements in water quality and wildlife habitat due to conservation efforts by local organizations.

Track the Chemung 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 Chemung River

Where does the data for the Chemung 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.