Rivermatics

USGS Streamgage 14158798

Smith River above Trail Brdg Resv near Belknap Springs

Smith River above Trail Brdg Resv near Belknap Springs is USGS streamgage 14158798 in Oregon, monitoring river discharge in hydrologic subbasin 17090004. It sits on the Smith River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 21 square miles. Discharge records at this site go back to 2017. Typical flow runs near 8.4 cfs in July and 22.7 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
21 sq mi
Subbasin (HUC-8)
17090004
Coordinates
44.28989, -122.04858
USGS site number
14158798
Records begin
2017-08-10 (9 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Smith River above Trail Brdg Resv near Belknap Springs. 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
4.3 4.7 44.3
4.5 4.8 5.2
4.7 5.2 13.4
4.4 4.8 5.3
4.4 4.8 5.2
4.3 4.8 5.2
4.4 4.8 6.4
4.4 4.7 26.2
4.3 4.8 5.3
4.2 4.8 5.2
4.2 4.8 5.2
4.3 4.8 5.3
4.3 4.8 5.3
4.2 4.8 5.3

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 9 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 — 21.1 —
February — 17.9 —
March — 19 —
April — 22.7 —
May — 39.3 —
June — 21.9 —
July — 8.4 —
August 5.5 7.1 433.7
September 5.1 27.4 399.6
October 5 11.2 344.3
November 5.5 11.4 133.5
December 6.2 18.7 144.7

All values in cubic feet per second (cfs).

Common questions

When does Smith River above Trail Brdg Resv near Belknap Springs normally run highest?
May, on the long-term record. The median daily flow that month is about 39.3 cfs, against 7.1 cfs in August, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Smith River above Trail Brdg Resv near Belknap Springs?
It depends on the month. In August, half of days historically fall near 7.1 cfs, with the middle 80% of days between 5.5 and 433.7 cfs. The month-by-month table on this page gives the full range.
How long has Smith River above Trail Brdg Resv near Belknap Springs been measured?
Discharge records at USGS site 14158798 begin in 2017, about 9 years, covering roughly 3,284 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Smith River above Trail Brdg Resv near Belknap Springs?
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 Smith River above Trail Brdg Resv near Belknap Springs?
The gauge sits at 44.28989, -122.04858, in Oregon, in hydrologic subbasin 17090004, draining roughly 21 square miles.
Can I use Smith River above Trail Brdg Resv near Belknap Springs 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 Smith River

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

Other gauges in this subbasin