River Report

Farmington River river

2 streamgauges 33% of normal Last updated 2026-05-21
Aggregate flow
669cfs
% of normal
33%
Daily volume
1,327AF
Seasonal avg
1,997cfs

Total streamflow across the Farmington River was last observed at 669 cfs, and is expected to yield approximately 1,327 acre-ft of water today; about 33% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 1,997 cfs, with recent peaks last observed on 2011-08-30 when daily discharge volume was observed at 19,350 cfs.

Maximum discharge along the river is currently at the Farmington River At Tariffville reporting a streamflow rate of 410 cfs. However, the streamgauge with the highest stage along the river is the Farmington River At Unionville with a gauge stage of 5.07 ft. This river is monitored from 2 different streamgauging stations along the Farmington River, the highest being situated at an altitude of 180 ft, the Farmington River At Unionville.

Max discharge

Farmington River At Tariffville

410cfs
Highest stage

Farmington River At Unionville

5.07ft
Highest-elevation gauge

Farmington River At Unionville

180ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Farmington 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 Farmington 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)
Farmington River At Unionville CT
USGS 01188090
259 5.07 -8.2 35% 68 26,600 180
Farmington River At Tariffville CT
USGS 01189995
410 1.39 -8.1 35% 128 29,900 161
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

Farmington River

The Farmington River is a 50-mile-long river located in Connecticut, USA. The river has a rich history, dating back to the early 1600s, when it was used for transportation, agriculture, and fishing. Today, the river is used for recreational activities such as fishing, kayaking, and tubing. The Farmington River has several reservoirs and dams, including the West Branch Reservoir, Barkhamsted Reservoir, and Nepaug Reservoir. These reservoirs provide drinking water to nearby communities and also help regulate the river during periods of low flow. The river's hydrology is influenced by several factors, including precipitation, snow melt, and groundwater discharge. Despite being a popular recreational destination, the Farmington River also supports agriculture, providing water for crops and livestock.

Track the Farmington 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 Farmington River

Where does the data for the Farmington 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.