Blue River level at Silverthorne
Colorado · Fishing & wading
Measured at USGS 09050700 — BLUE RIVER BELOW DILLON, CO. · NWS forecast point BLRC2
Reading taken · as of 48 min ago
Low and clear — wadeable, and fish will be spooky
At 54 CFS, this gauge is running 51% of normal for mid-September — below the 106 CFS median USGS has recorded for this date across 63 years of record (1963–2026). The stage is 2.6 ft below the NWS action stage of 3.5 ft.
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Flood stages at Silverthorne
National Weather Service categories for gauge BLRC2, WFO BOU. Impact wording is the NWS's own, verbatim.
-
Major flood 7.0 ft
- 7.0 ft Widespread, major flooding occurs with several bridges overtopped downstream of Dillon Dam. Many roads, homes and businesses are impacted.
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Moderate flood 5.5 ft
- 6.0 ft Colorado Highway 9 is overtopped near Silverthorne.
- 6.5 ft Water flows over the 6th Street bridge and into businesses in Silverthorne.
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Minor flood 4.0 ft · 2,002 CFS
- 4.0 ft Homes flood in the South 40 Subdivision in northern Silverthorne.
- 5.0 ft Homes flood along the Blue River in Silverthorne.
-
Action 3.5 ft · 1,561 CFS
- 3.7 ft Water approaches yards in the South 40 Subdivision in northern Silverthorne and walkways along the Blue River in Silverthorne.
- Right now 0.86 ft
NWS forecast: 0.86 ft by .
Flow history at Silverthorne
Daily values from USGS 09050700, updated every 15 to 60 minutes; NWS forecast for BLRC2 reissued through the day. Provisional.
Highest crests on record at Silverthorne
12 on record
| Stage | Flow | Date |
|---|---|---|
| 3.95 ft | 1,990 CFS | Jun 22, 1983 |
| 3.89 ft | 1,910 CFS | Jul 6, 2019 |
| 3.88 ft | 2,010 CFS | May 25, 1984 |
| 3.83 ft | 1,870 CFS | Jun 10, 1985 |
| 3.78 ft | 1,800 CFS | Jun 17, 2015 |
| 3.76 ft | 2,000 CFS | Jul 14, 1995 |
| 3.74 ft | 1,780 CFS | Jul 9, 2011 |
| 3.68 ft | 1,714 CFS | Jun 8, 2014 |
| 3.68 ft | 1,730 CFS | Jun 26, 1971 |
| 3.64 ft | 1,800 CFS | Jun 7, 2010 |
Crests published by the National Weather Service.
About Blue River at Silverthorne
In Colorado — the reading paddlers, anglers and outfitters here check before committing to a shuttle. Dillon Dam tailwater; year-round flow page.
Blue River at Silverthorne — common questions
3 questions
What makes the flow change on Blue River at Silverthorne?
Rain upstream, plus seasonal baseflow. The 12-month chart shows how it behaves through the year.
Is Blue River at Silverthorne high or low for this time of year?
The USGS median flow for mid-September here is 106 CFS, from 63 years of record (1963–2026). Today is 51% of it. The comparison is what makes the raw number mean anything: the same reading is a drought on one river and a flood on another.
How often does this reading update?
USGS transmits from gauge 09050700 every 15 to 60 minutes, and the National Weather Service reissues the flood forecast for BLRC2 a few times a day — more often when the river is rising. This page refreshes from both when you open it. The timestamp is in the gauge's local time.