When does South Umpqua River at Melrose, OR normally run highest?

March, on the long-term record. The median daily flow that month is about 10,201.3 cfs, against 94.5 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.

How long has South Umpqua River at Melrose, OR been measured?

Discharge records at USGS site 14312330 begin in 2024, about 2 years, covering roughly 674 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.

Is there a flow forecast for South Umpqua River at Melrose, OR?

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. A companion model forecasts each day's water-temperature high and low. 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 South Umpqua River at Melrose, OR?

The gauge sits at 43.25176, -123.4477, in Oregon, in hydrologic subbasin 17100302, draining roughly 1,770 square miles.

Can I use South Umpqua River at Melrose, OR 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 14312330

South Umpqua River at Melrose, OR

South Umpqua River at Melrose, OR is USGS streamgage 14312330 in Oregon, monitoring river discharge in hydrologic subbasin 17100302. It sits on the South Umpqua River, alongside 2 other gauges Rivermatics tracks on the same river. It drains a watershed of about 1,770 square miles. Discharge records at this site go back to 2024. Typical flow runs near 152.7 cfs in July and 3,446 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, alongside daily high and low water-temperature forecasts.

View live conditions & forecast →

Gauge details

State: Oregon
Drainage area: 1,770 sq mi
Subbasin (HUC-8): 17100302
Coordinates: 43.25176, -123.4477
USGS site number: 14312330
Records begin: 2024-08-14 (2 years)
Rivermatics forecast: 14-day flow outlook + water temperature

14-day flow forecast

Based on observations through September 10 for South Umpqua River at Melrose, OR. 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	142	152	164
September 12	133	156	187
September 13	135	172	230
September 14	130	174	241
September 15	121	165	231
September 16	112	156	218
September 17	101	143	203
September 18	92.3	133	191
September 19	85.3	124	175
September 20	79	115	162
September 21	74.1	109	153
September 22	70.4	104	147
September 23	66.8	99	141
September 24	64.1	95.4	136

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 2 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	—	3,994.2	—
February	—	5,263.9	—
March	—	10,201.3	—
April	—	3,446	—
May	—	1,064.5	—
June	—	406.9	—
July	—	152.7	—
August	—	94.5	—
September	—	132.2	—
October	—	285.1	—
November	—	2,308.9	—
December	—	5,611.7	—

All values in cubic feet per second (cfs).

Common questions

When does South Umpqua River at Melrose, OR normally run highest?: March, on the long-term record. The median daily flow that month is about 10,201.3 cfs, against 94.5 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
How long has South Umpqua River at Melrose, OR been measured?: Discharge records at USGS site 14312330 begin in 2024, about 2 years, covering roughly 674 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for South Umpqua River at Melrose, OR?: 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. A companion model forecasts each day's water-temperature high and low. 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 South Umpqua River at Melrose, OR?: The gauge sits at 43.25176, -123.4477, in Oregon, in hydrologic subbasin 17100302, draining roughly 1,770 square miles.
Can I use South Umpqua River at Melrose, OR 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 South Umpqua River

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

South Umpqua River at Tiller, OR 449 sq mi
South Umpqua River near Brockway, OR 1,670 sq mi
South Umpqua River at Melrose, OR this page