USGS Streamgage 09147025
Uncompahgre River below Ridgway Reservoir, CO
Uncompahgre River below Ridgway Reservoir, CO is USGS streamgage 09147025 in Colorado, monitoring river discharge in hydrologic subbasin 14020006. It sits on the Uncompahgre River, alongside 4 other gauges Rivermatics tracks on the same river. It drains a watershed of about 265 square miles. Discharge records at this site go back to 1988. Typical flow runs near 379.1 cfs in July and 191.6 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.
View live conditions & forecast →
Gauge details
- State
- Colorado
- Drainage area
- 265 sq mi
- Gauge elevation
- 6,649 ft
- Subbasin (HUC-8)
- 14020006
- Coordinates
- 38.24056, -107.76031
- USGS site number
- 09147025
- Records begin
- 1988-10-01 (38 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Uncompahgre River below Ridgway Reservoir, 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.
| Date | Low p10 | Expected p50 | High p90 | Range |
|---|---|---|---|---|
| 102 | 110 | 115 | ||
| 98.4 | 109 | 117 | ||
| 94 | 108 | 120 | ||
| 89.7 | 108 | 123 | ||
| 84.3 | 107 | 124 | ||
| 79 | 107 | 127 | ||
| 74 | 104 | 125 | ||
| 70 | 103 | 124 | ||
| 62.7 | 98.9 | 121 | ||
| 57.7 | 95.7 | 120 | ||
| 52.3 | 91.3 | 118 | ||
| 47.6 | 86.9 | 117 | ||
| 45.7 | 85.6 | 117 | ||
| 44.4 | 85.7 | 119 |
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 38 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.
| Month | Low p10 | Typical p50 | High p90 | Range |
|---|---|---|---|---|
| January | 39.1 | 49.4 | 76.3 | |
| February | 38.8 | 49.4 | 83.5 | |
| March | 36 | 57.3 | 157.4 | |
| April | 44.1 | 191.6 | 394.5 | |
| May | 145.3 | 295.1 | 486.6 | |
| June | 164.4 | 390.2 | 726.7 | |
| July | 216.7 | 379.1 | 625.2 | |
| August | 178.5 | 328.5 | 512.5 | |
| September | 70.7 | 156.4 | 335.9 | |
| October | 51 | 76.7 | 196.3 | |
| November | 39.9 | 50.4 | 103.9 | |
| December | 40.9 | 51.4 | 95.1 |
All values in cubic feet per second (cfs).
Common questions
- When does Uncompahgre River below Ridgway Reservoir, CO normally run highest?
- June, on the long-term record. The median daily flow that month is about 390.2 cfs, against 49.4 cfs in January, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Uncompahgre River below Ridgway Reservoir, CO?
- It depends on the month. In January, half of days historically fall near 49.4 cfs, with the middle 80% of days between 39.1 and 76.3 cfs. The month-by-month table on this page gives the full range.
- How long has Uncompahgre River below Ridgway Reservoir, CO been measured?
- Discharge records at USGS site 09147025 begin in 1988, about 38 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 Uncompahgre River below Ridgway Reservoir, 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. 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 Uncompahgre River below Ridgway Reservoir, CO?
- The gauge sits at 38.24056, -107.76031, in Colorado, in hydrologic subbasin 14020006, at an elevation of about 6,649 feet, draining roughly 265 square miles.
- Can I use Uncompahgre River below Ridgway Reservoir, 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 Uncompahgre River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Uncompahgre River in full.
- Uncompahgre River near Ouray, CO 77 sq mi
- Uncompahgre River near Ridgway, CO 149 sq mi
- Uncompahgre River below Ridgway Reservoir, CO this page
- Uncompahgre River at Colona, CO 448 sq mi
- Uncompahgre River at Delta, CO 1,114 sq mi