River Report

Cedar River river

15 streamgauges 67% of normal Last updated 2026-05-22
Aggregate flow
28,422cfs
% of normal
67%
Daily volume
56,374AF
Seasonal avg
42,643cfs

Total streamflow across the Cedar River was last observed at 28,422 cfs, and is expected to yield approximately 56,374 acre-ft of water today; about 67% of normal. River levels are low and may signify a drought. Average streamflow for this time of year is 42,643 cfs, with recent peaks last observed on 2016-09-25 when daily discharge volume was observed at 294,406 cfs.

Maximum discharge along the river is currently at the Cedar River Near Conesville reporting a streamflow rate of 7,880 cfs. However, the streamgauge with the highest stage along the river is the Cedar River At Cedar Falls with a gauge stage of 78.70 ft. This river is monitored from 15 different streamgauging stations along the Cedar River, the highest being situated at an altitude of 1,911 ft, the Cedar River Below Bear Creek Near Cedar Falls.

Max discharge

Cedar River Near Conesville

7,880cfs
Highest stage

Cedar River At Cedar Falls

78.70ft
Highest-elevation gauge

Cedar River Below Bear Creek Near Cedar Falls

1,911ft
Aggregate trend

River streamflow levels

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

All 15 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)
Cedar River Below Bear Creek Near Cedar Falls WA
USGS 12114500
89 1.83 -9.4 31% 7 7,620 1,911
Cedar River Near Cedar Falls WA
USGS 12115000
404 5.12 8.0 99% 20 9,490 1,573
Cedar River Near Austin MN
USGS 05457000
182 3.22 11.0 25% 29 20,000 1,163
Cedar River At Charles City IA
USGS 05457700
578 2.83 -2.7 25% 31 34,600 977
Cedar River At Powerplant At Cedar Falls WA
USGS 12116400
101 32.04 2.2 94% 1 3,740 955
Cedar River At Cedar Falls WA
USGS 12116500
96 5.77 2.5 28% 30 9,120 905
Cedar River At Waverly IA
USGS 05458300
1,120 5.03 -3.5 38% 8 52,600 895
Cedar River At Janesville IA
USGS 05458500
1,150 2.12 -12.9 33% 86 53,400 859
Cedar River At Cedar Falls IA
USGS 05463050
4,070 78.70 -8.3 55% 425 83,900 853
Cedar River At Waterloo IA
USGS 05464000
4,330 6.76 -12.7 52% 286 112,000 823
Cedar River At Cedar Rapids IA
USGS 05464500
6,580 5.49 -4.9 74% 252 140,000 712
Cedar River Near Conesville IA
USGS 05465000
7,880 8.71 3.6 77% 561 127,000 593
Cedar River Near Landsburg WA
USGS 12117500
447 1.50 0.0 63% 189 14,200 590
Cedar River Below Diversion Near Landsburg WA
USGS 12117600
271 3.14 1.5 45% 77 7,790 493
Cedar River At Renton WA
USGS 12119000
339 8.65 -1.2 50% 81 10,600 27
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

Cedar River

The Cedar River is a 338-mile long river located in the north-central part of the United States, primarily in the state of Iowa. It flows from its headwaters in Dodge County, Minnesota, through southern Minnesota and northern Iowa, before emptying into the Iowa River near Columbus Junction. The Cedar River is a principal tributary of the Iowa River and a significant source of water for the region. It has been used for agricultural irrigation and drinking water for many years. The river is also home to several reservoirs and dams, including the Cedar River Reservoir, which was created by the construction of the Cedar River Dam in the early 20th century. The Cedar River is popular for recreational activities such as fishing, boating, and camping.

Around the river

Recreation along the Cedar River

Fishing access and paddle runs Snoflo tracks within the watershed.

Track the Cedar 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 Cedar River

Where does the data for the Cedar 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.