USGS Streamgage 09179450
Dolores River near Gateway, CO
Dolores River near Gateway, CO is USGS streamgage 09179450 in Colorado, monitoring river discharge in hydrologic subbasin 14030004. It sits on the Dolores River, alongside 6 other gauges Rivermatics tracks on the same river. It drains a watershed of about 4,146 square miles. Discharge records at this site go back to 2014. Typical flow runs near 270.5 cfs in July and 340.3 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
- 4,146 sq mi
- Gauge elevation
- 4,573 ft
- Subbasin (HUC-8)
- 14030004
- Coordinates
- 38.66804, -108.96552
- USGS site number
- 09179450
- Records begin
- 2014-11-18 (12 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Dolores River near Gateway, 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 |
|---|---|---|---|---|
| 11.1 | 12.9 | 15.4 | ||
| 9.5 | 12.9 | 20.4 | ||
| 9 | 13.8 | 26.4 | ||
| 9.8 | 21 | 113 | ||
| 12.9 | 40.8 | 173 | ||
| 18.1 | 73.6 | 286 | ||
| 23.9 | 118 | 406 | ||
| 19.3 | 99.2 | 446 | ||
| 16.6 | 58.6 | 207 | ||
| 15 | 43.1 | 116 | ||
| 12.4 | 32.7 | 81 | ||
| 11.4 | 29.2 | 66.6 | ||
| 9.8 | 23.1 | 58.5 | ||
| 8.8 | 21.7 | 52.3 |
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 12 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 | 60.1 | 106.4 | 177.6 | |
| February | 78.2 | 138.4 | 234.9 | |
| March | 86.8 | 186.4 | 769.9 | |
| April | 117.7 | 340.3 | 3,147.7 | |
| May | 136.6 | 476.3 | 4,872.3 | |
| June | 113.8 | 757.9 | 3,209.7 | |
| July | 32.4 | 270.5 | 1,286.6 | |
| August | 15.9 | 165.3 | 509.1 | |
| September | 23.6 | 90.1 | 211.7 | |
| October | 54.1 | 127.9 | 505.7 | |
| November | 87.8 | 132.7 | 198.4 | |
| December | 60.1 | 111 | 162 |
All values in cubic feet per second (cfs).
Common questions
- When does Dolores River near Gateway, CO normally run highest?
- June, on the long-term record. The median daily flow that month is about 757.9 cfs, against 90.1 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Dolores River near Gateway, CO?
- It depends on the month. In January, half of days historically fall near 106.4 cfs, with the middle 80% of days between 60.1 and 177.6 cfs. The month-by-month table on this page gives the full range.
- How long has Dolores River near Gateway, CO been measured?
- Discharge records at USGS site 09179450 begin in 2014, about 12 years, covering roughly 4,279 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Dolores River near Gateway, 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 Dolores River near Gateway, CO?
- The gauge sits at 38.66804, -108.96552, in Colorado, in hydrologic subbasin 14030004, at an elevation of about 4,573 feet, draining roughly 4,146 square miles.
- Can I use Dolores River near Gateway, 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 Dolores River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Dolores River in full.
- Dolores River below Rico, CO 106 sq mi
- Dolores River at Dolores, CO 504 sq mi
- Dolores River near Slick Rock, CO 1,434 sq mi
- Dolores River at Bedrock, CO 2,025 sq mi
- Dolores River near Bedrock, CO 2,147 sq mi
- Dolores River near Gateway, CO this page
- Dolores River near Cisco, UT 4,580 sq mi