River Report

Hassayampa River river

2 streamgauges 100% of normal Last updated 2025-12-04
Aggregate flow
43cfs
% of normal
100%
Daily volume
85AF
Seasonal avg
43cfs

Total streamflow across the Hassayampa River was last observed at 43 cfs, and is expected to yield approximately 85 acre-ft of water today; about 100% of normal. Average streamflow for this time of year is 43 cfs, with recent peaks last observed on 2023-03-22 when daily discharge volume was observed at 3,970 cfs.

Maximum discharge along the river is currently at the Hassayampa River Near Arlington reporting a streamflow rate of 41.8 cfs. However, the streamgauge with the highest stage along the river is the Hassayampa River Near Morristown with a gauge stage of 5.73 ft. This river is monitored from 2 different streamgauging stations along the Hassayampa River, the highest being situated at an altitude of 1,854 ft, the Hassayampa River Near Morristown.

Max discharge

Hassayampa River Near Arlington

41.8cfs
Highest stage

Hassayampa River Near Morristown

5.73ft
Highest-elevation gauge

Hassayampa River Near Morristown

1,854ft
Aggregate trend

River streamflow levels

Daily aggregate streamflow across every monitored gauge along the Hassayampa 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 Hassayampa 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)
Hassayampa River Near Morristown AZ
USGS 09516500
· 5.73 · · 0 3,970 1,854
Hassayampa River Near Arlington AZ
USGS 09517000
42 5.44 -8.1 210% 0 3,970 839
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

Hassayampa River

The Hassayampa River is a 113-mile-long river in central Arizona that flows through the Sonoran Desert. Historically, it was a major water source for Native Americans and early settlers, but now it primarily serves as an irrigation source for agriculture. The river's flow is highly variable and dependent on monsoon rains. It has been dammed several times to create reservoirs like Lake Pleasant, which provides water for the Phoenix metropolitan area. Recreation activities along the river include hiking, fishing, and kayaking, with several parks and preserves offering access to the river. The Hassayampa River is also an important ecological corridor, providing habitat for rare wildlife species like the southwestern willow flycatcher and the Sonoran Desert toad.

Around the river

Recreation along the Hassayampa River

Fishing access and paddle runs Snoflo tracks within the watershed.

Track the Hassayampa 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 Hassayampa River

Where does the data for the Hassayampa 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.