USGS Streamgage 09349800
Piedra River near Arboles, CO
Piedra River near Arboles, CO is USGS streamgage 09349800 in Colorado, monitoring river discharge in hydrologic subbasin 14080102. It drains a watershed of about 653 square miles. Discharge records at this site go back to 1962. Typical flow runs near 176.9 cfs in July and 666.9 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
- Colorado
- Drainage area
- 653 sq mi
- Gauge elevation
- 6,151 ft
- Subbasin (HUC-8)
- 14080102
- Coordinates
- 37.08834, -107.39784
- USGS site number
- 09349800
- Records begin
- 1962-09-01 (64 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Piedra River near Arboles, 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 |
|---|---|---|---|---|
| 9.3 | 10.1 | 10.9 | ||
| 8.6 | 9.7 | 11.1 | ||
| 8.1 | 9.5 | 11.7 | ||
| 8.1 | 10.3 | 16.5 | ||
| 9.2 | 13.6 | 37.3 | ||
| 12 | 37.9 | 327 | ||
| 16.1 | 77.6 | 378 | ||
| 18.2 | 72.6 | 275 | ||
| 18 | 59 | 215 | ||
| 17.6 | 49.9 | 170 | ||
| 15.9 | 40.1 | 124 | ||
| 14.4 | 34.5 | 102 | ||
| 13.4 | 31.4 | 89.4 | ||
| 13 | 28.3 | 72.6 |
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 64 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 | 40.7 | 67.3 | 116.5 | |
| February | 42.8 | 73.1 | 171.6 | |
| March | 73.9 | 221.9 | 718.5 | |
| April | 257.8 | 666.9 | 1,706.3 | |
| May | 428.8 | 1,058.8 | 2,222.9 | |
| June | 169.5 | 771.7 | 1,954.3 | |
| July | 49 | 176.9 | 705 | |
| August | 38.2 | 148.2 | 390.5 | |
| September | 43.8 | 114.9 | 397.7 | |
| October | 55 | 114.2 | 351.5 | |
| November | 50.3 | 92.9 | 198.2 | |
| December | 39.9 | 73.5 | 138.3 |
All values in cubic feet per second (cfs).
Common questions
- When does Piedra River near Arboles, CO normally run highest?
- May, on the long-term record. The median daily flow that month is about 1,058.8 cfs, against 67.3 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 Piedra River near Arboles, CO?
- It depends on the month. In January, half of days historically fall near 67.3 cfs, with the middle 80% of days between 40.7 and 116.5 cfs. The month-by-month table on this page gives the full range.
- How long has Piedra River near Arboles, CO been measured?
- Discharge records at USGS site 09349800 begin in 1962, about 64 years, covering roughly 9,196 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Piedra River near Arboles, 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 Piedra River near Arboles, CO?
- The gauge sits at 37.08834, -107.39784, in Colorado, in hydrologic subbasin 14080102, at an elevation of about 6,151 feet, draining roughly 653 square miles.
- Can I use Piedra River near Arboles, 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.