Rivermatics

USGS Streamgage 09073300

Roaring Fork River Ab Difficult C near Aspen, CO

Roaring Fork River Ab Difficult C near Aspen, CO is USGS streamgage 09073300 in Colorado, monitoring river discharge in hydrologic subbasin 14010004. It sits on the Roaring Fork River, alongside 5 other gauges Rivermatics tracks on the same river. It drains a watershed of about 76 square miles. Discharge records at this site go back to 1979. Typical flow runs near 65.1 cfs in July and 27.6 cfs in April, with the higher of the two arriving in July. 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
Colorado
Drainage area
76 sq mi
Gauge elevation
8,143 ft
Subbasin (HUC-8)
14010004
Coordinates
39.14111, -106.77361
USGS site number
09073300
Records begin
1979-10-01 (47 years)
Rivermatics forecast
14-day flow outlook + water temperature

14-day flow forecast

Based on observations through for Roaring Fork River Ab Difficult C near Aspen, CO. 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
7.7 8.2 8.7
7.4 8 8.7
7.4 8.4 10.3
8.2 10.3 17.3
8.5 11.2 20.1
9.1 12.8 24.5
9.2 13.3 24.8
8.9 12.5 21.2
8.4 11.4 18.5
7.9 10.6 17
7.7 10.4 16.9
7.4 10 15.7
7.3 9.9 15.8
7.2 10 16.3

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 47 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 7.1 12.4 18
February 6.4 11.7 17
March 7.4 13.2 21.3
April 15.7 27.6 48.2
May 49.6 97.9 203.7
June 79 183.5 754.6
July 33.2 65.1 286.1
August 22.5 37.7 92.6
September 18.1 29.6 55.6
October 13.7 22.1 40.3
November 9.1 15.8 28.6
December 8 13.4 22.6

All values in cubic feet per second (cfs).

Common questions

When does Roaring Fork River Ab Difficult C near Aspen, CO normally run highest?
June, on the long-term record. The median daily flow that month is about 183.5 cfs, against 11.7 cfs in February, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
What is a normal flow for Roaring Fork River Ab Difficult C near Aspen, CO?
It depends on the month. In January, half of days historically fall near 12.4 cfs, with the middle 80% of days between 7.1 and 18 cfs. The month-by-month table on this page gives the full range.
How long has Roaring Fork River Ab Difficult C near Aspen, CO been measured?
Discharge records at USGS site 09073300 begin in 1979, about 47 years, covering roughly 9,200 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
Is there a flow forecast for Roaring Fork River Ab Difficult C near Aspen, CO?
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 Roaring Fork River Ab Difficult C near Aspen, CO?
The gauge sits at 39.14111, -106.77361, in Colorado, in hydrologic subbasin 14010004, at an elevation of about 8,143 feet, draining roughly 76 square miles.
Can I use Roaring Fork River Ab Difficult C near Aspen, CO 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 Roaring Fork River

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

Other gauges in this subbasin