Rivermatics

USGS Streamgage 06857100

Republican River at Junction City, KS

Republican River at Junction City, KS is USGS streamgage 06857100 in Kansas, monitoring river discharge in hydrologic subbasin 10250017. It sits on the Republican River, alongside 10 other gauges Rivermatics tracks on the same river. It drains a watershed of about 24,900 square miles. Discharge records at this site go back to 1963. Typical flow runs near 588.4 cfs in July and 186.7 cfs in April, with the higher of the two arriving in July. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State
Kansas
Drainage area
24,900 sq mi
Gauge elevation
1,083 ft
Subbasin (HUC-8)
10250017
Coordinates
39.04278, -96.82945
USGS site number
06857100
Records begin
1963-10-01 (63 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Republican River at Junction City, KS. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

Forecast daily mean discharge in cubic feet per second, by date
Date Low p10 Expected p50 High p90 Range
66.3 72.7 81
64.8 72.1 82
64.2 72.3 83.8
63.9 72.5 86.4
63.1 72.2 88.4
62.9 72.5 97.4
63.1 72.8 101
63.1 73.1 115
62.5 72.7 106
61.6 71.9 99.5
61.4 72.2 102
61.5 72.5 109
61.3 72.6 117
61 72.7 107

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 59 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

Historical monthly discharge percentiles in cubic feet per second
Month Low p10 Typical p50 High p90 Range
January 54.6 251.2 1,189.6
February 47.3 297.9 1,274
March 40.9 223 2,091
April 32.7 186.7 2,280.3
May 32.1 383.3 2,965.2
June 35.4 479 3,491
July 35.9 588.4 3,421
August 42.6 401.1 2,465.5
September 32.5 199.1 1,649
October 34.3 163.8 1,660
November 32.9 185.8 1,881
December 32.9 336.3 2,316.8

All values in cubic feet per second (cfs).

Common questions

When does Republican River at Junction City, KS normally run highest?
July, on the long-term record. The median daily flow that month is about 588.4 cfs, against 163.8 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Republican River at Junction City, KS?
It depends on the month. In January, half of days historically fall near 251.2 cfs, with the middle 80% of days between 54.6 and 1,189.6 cfs. The month-by-month table on this page gives the full range.
How long has Republican River at Junction City, KS been measured?
Discharge records at USGS site 06857100 begin in 1963, about 63 years, covering roughly 9,191 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Republican River at Junction City, KS?
Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.
Where is Republican River at Junction City, KS?
The gauge sits at 39.04278, -96.82945, in Kansas, in hydrologic subbasin 10250017, at an elevation of about 1,083 feet, draining roughly 24,900 square miles.
Can I use Republican River at Junction City, KS data for flood or safety decisions?
No. Rivermatics provides estimates, not guarantees, and the readings and forecasts here may be delayed, inaccurate, or wrong. Do not use them for navigation or for any safety, rescue, or emergency decision. Check the National Weather Service and USGS directly, and use your own judgment.

Upstream and downstream on the Republican River

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Republican River in full.

Other gauges in this subbasin