When does Green River above S 277Th St at Kent, WA normally run highest?

January, on the long-term record. The median daily flow that month is about 1,903.2 cfs, against 282.1 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.

How long has Green River above S 277Th St at Kent, WA been measured?

Discharge records at USGS site 12113150 begin in 2020, about 6 years, covering roughly 2,173 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.

Is there a flow forecast for Green River above S 277Th St at Kent, WA?

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 Green River above S 277Th St at Kent, WA?

The gauge sits at 47.35341, -122.20846, in Washington, in hydrologic subbasin 17110013, at an elevation of about 38 feet.

Can I use Green River above S 277Th St at Kent, WA 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.

USGS Streamgage 12113150

Green River above S 277Th St at Kent, WA

Green River above S 277Th St at Kent, WA is USGS streamgage 12113150 in Washington, monitoring river discharge in hydrologic subbasin 17110013. It sits on the Green River, alongside 7 other gauges Rivermatics tracks on the same river. Discharge records at this site go back to 2020. Typical flow runs near 333.8 cfs in July and 1,203.2 cfs in April, with the higher of the two arriving in April. Rivermatics issues a daily machine-learned flow outlook for this gauge, reaching 14 days ahead.

View live conditions & forecast →

Gauge details

State: Washington
Gauge elevation: 38 ft
Subbasin (HUC-8): 17110013
Coordinates: 47.35341, -122.20846
USGS site number: 12113150
Records begin: 2020-08-25 (6 years)
Rivermatics forecast: 14-day flow outlook

14-day flow forecast

Based on observations through September 10 for Green River above S 277Th St at Kent, WA. 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
September 11	257	267	276
September 12	251	267	293
September 13	280	347	533
September 14	270	331	504
September 15	264	322	485
September 16	255	310	472
September 17	247	303	474
September 18	243	303	499
September 19	239	307	545
September 20	237	310	572
September 21	232	296	490
September 22	228	292	479
September 23	228	311	649
September 24	228	314	641

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 6 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
January	—	1,903.2	—
February	—	1,497.9	—
March	—	1,601	—
April	—	1,203.2	—
May	—	1,393.9	—
June	—	968	—
July	—	333.8	—
August	—	282.1	—
September	—	375.3	—
October	—	524	—
November	—	1,190.5	—
December	—	1,785.8	—

All values in cubic feet per second (cfs).

Common questions

When does Green River above S 277Th St at Kent, WA normally run highest?: January, on the long-term record. The median daily flow that month is about 1,903.2 cfs, against 282.1 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
How long has Green River above S 277Th St at Kent, WA been measured?: Discharge records at USGS site 12113150 begin in 2020, about 6 years, covering roughly 2,173 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Green River above S 277Th St at Kent, WA?: 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 Green River above S 277Th St at Kent, WA?: The gauge sits at 47.35341, -122.20846, in Washington, in hydrologic subbasin 17110013, at an elevation of about 38 feet.
Can I use Green River above S 277Th St at Kent, WA 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 Green River

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

Green River below Howard A Hanson Dam, WA 221 sq mi
Green River at Purification Plant near Palmer, WA 231 sq mi
Green River below Crisp Creek near Black Diamond, WA 312 sq mi
Green River near Auburn, WA 399 sq mi
Green River at Tukwila, WA 440 sq mi
Green River at 200Th Street at Kent, WA 451 sq mi
Green River above S 277Th St at Kent, WA this page
Green River below Meeker St at Kent, WA