Sandy River Flow Today
As of October 2, 2026 at 12:45 AM, the Sandy River is flowing at 278 cfs below Bull Run River, OR — 69% of normal for the date and down 1% in 24 hours. 4 of 4 USGS gauges reported in the last 3 days; flows range from 11 to 278 cfs. ❤ Favorite
Sandy River map
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Every gauge, dam and paddle run on the river, one tap each:
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Sandy River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Bull Run River, the Sandy River is running 278 cfs — 69% of normal, down 1% since yesterday. Along the river, 4 of 4 reporting gauges are below normal (the typical gauge is at 69% of normal).
In the last 24 hours the river is dropping at Mercer (-19%).
Highest against normal: Marmot at 70%. Lowest: Danville at 25%.
How the Sandy River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Marmot735 ft 222 cfs70%
- Danville481 ft 11 cfs25%
- Bull Run River230 ft 278 cfs69%
- Mercer190 ft 130 cfs68%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Sandy River streamgauge, placed by its own percent of normal. The line is the typical gauge (69%).
Sandy River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Sandy River Near Marmot OR
Oct 2, 12:15 AM · USGS 14137000 |
222 cfs | 70% | -1% | 689.62 ft | · | 735 ft |
|
Sandy River Near Danville VA
Oct 2, 4:00 AM · USGS 02074500 |
11 cfs | 25% | -4% | 0.89 ft | 7.1 ft below | 481 ft |
|
Sandy River Below Bull Run River OR
Oct 2, 12:45 AM · USGS 14142500 |
278 cfs | 69% | -1% | 7.58 ft | 11.7 ft below | 230 ft |
|
Sandy River Near Mercer ME
Oct 2, 4:00 AM · USGS 01048000 |
130 cfs | 68% | -19% | 2.92 ft | 9.1 ft below | 190 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Dams & reservoirs on the Sandy River
Releases from these dams shape the flow downstream. Tap one for its daily level and history.
Sandy River streamflow over time
Daily total flow across every monitored gauge on the river.
Maximum streamflow by year
Sandy River
The Sandy River is a 56-mile long river located in northern Oregon. The river was named after the sandbars that form at the mouth of the river. Historically, the river was used for fishing, logging, and transportation. Today, the river is used for hydroelectric power, irrigation, and recreational purposes. The river's hydrology is heavily influenced by snowmelt, and its flow is regulated by several dams and reservoirs, including the Bull Run Reservoir and the Sandy River Reservoir. These dams and reservoirs provide drinking water to the Portland metropolitan area. The river is a popular destination for fishing, camping, hiking, and river-rafting. The watershed of the Sandy River also supports agriculture and forestry in the region.
About the Sandy River
How is the Sandy River flowing right now?
As of October 2, 2026, the Sandy River is flowing at 278 cfs below Bull Run River, OR, about 69% of normal for the date. Across its 4 USGS gauges, current flows range from 11 to 278 cfs. Every gauge’s live reading is in the table above.
Is the Sandy River running high or low?
The typical gauge on the Sandy River is at 69% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
What is flood stage on the Sandy River?
The National Weather Service sets flood stages for Danville (8.0 ft), Bull Run River (19.3 ft), Mercer (12.0 ft). The table shows how far each gauge is below its flood stage right now.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.