Rivermatics

USGS Streamgage 14137000

Sandy River near Marmot, OR

Sandy River near Marmot, OR is USGS streamgage 14137000 in Oregon, monitoring river discharge in hydrologic subbasin 17080001. It sits on the Sandy River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 264 square miles. Discharge records at this site go back to 1911. Typical flow runs near 586.3 cfs in July and 1,696.7 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.

View live conditions & forecast →

Gauge details

State
Oregon
Drainage area
264 sq mi
Subbasin (HUC-8)
17080001
Coordinates
45.39956, -122.13731
USGS site number
14137000
Records begin
1911-09-01 (115 years)
Rivermatics forecast
14-day flow outlook

14-day flow forecast

Based on observations through for Sandy River near Marmot, 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 Range
229 235 241
228 236 246
238 257 300
235 253 290
227 240 262
221 233 248
217 229 242
214 226 239
211 223 237
210 222 235
207 219 233
205 218 233
203 216 233
201 216 233

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 114 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 719.4 1,442.3 3,999
February 736 1,355.5 3,545.9
March 846.4 1,410.3 2,811
April 1,045.9 1,696.7 2,838.3
May 897.1 1,639.7 2,815.2
June 618.3 1,046.2 2,025.7
July 415.4 586.3 892.6
August 307.6 400.9 550.9
September 270.9 349.9 554.5
October 262.1 427.2 1,251.8
November 389.4 1,066.8 3,285.7
December 639.5 1,406.1 4,193.2

All values in cubic feet per second (cfs).

Common questions

When does Sandy River near Marmot, OR normally run highest?
April, on the long-term record. The median daily flow that month is about 1,696.7 cfs, against 349.9 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Sandy River near Marmot, OR?
It depends on the month. In January, half of days historically fall near 1,442.3 cfs, with the middle 80% of days between 719.4 and 3,999 cfs. The month-by-month table on this page gives the full range.
How long has Sandy River near Marmot, OR been measured?
Discharge records at USGS site 14137000 begin in 1911, about 115 years, covering roughly 9,199 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Sandy River near Marmot, 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. 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 Sandy River near Marmot, OR?
The gauge sits at 45.39956, -122.13731, in Oregon, in hydrologic subbasin 17080001, draining roughly 264 square miles.
Can I use Sandy River near Marmot, 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 Sandy River

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

Other gauges in this subbasin