USGS Streamgage 09371000
Mancos River near Towaoc, CO
Mancos River near Towaoc, CO is USGS streamgage 09371000 in Colorado, monitoring river discharge in hydrologic subbasin 14080107. It sits on the Mancos River, alongside 1 other gauge Rivermatics tracks on the same river. It drains a watershed of about 526 square miles. Discharge records at this site go back to 1921. Typical flow runs near 2.7 cfs in July and 72.4 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
- 526 sq mi
- Gauge elevation
- 5,052 ft
- Subbasin (HUC-8)
- 14080107
- Coordinates
- 37.0275, -108.74149
- USGS site number
- 09371000
- Records begin
- 1921-04-01 (105 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Mancos River near Towaoc, 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 |
|---|---|---|---|---|
| 0 | 0 | 0.1 | ||
| 0 | 0 | 0.1 | ||
| 0 | 0 | 0.1 | ||
| 0 | 0.4 | 68.5 | ||
| 0 | 2.4 | 63.4 | ||
| 0.2 | 12.3 | 134 | ||
| 0.2 | 11.1 | 103 | ||
| 0 | 2.6 | 29.9 | ||
| 0 | 0.3 | 15.4 | ||
| 0 | 0.1 | 8.7 | ||
| 0 | 0.1 | 5.4 | ||
| 0 | 0.1 | 3.5 | ||
| 0 | 0.1 | 3.2 | ||
| 0 | 0.1 | 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 105 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 | 2.9 | 10.4 | 22.1 | |
| February | 7 | 17.1 | 48.8 | |
| March | 8.6 | 33.1 | 121.9 | |
| April | 3 | 72.4 | 289.6 | |
| May | 0.3 | 94.8 | 403.1 | |
| June | 0 | 22.6 | 222.7 | |
| July | 0 | 2.7 | 80.2 | |
| August | 0 | 4.3 | 60.3 | |
| September | 0 | 7.7 | 60.3 | |
| October | 0.4 | 11.5 | 49.7 | |
| November | 2.7 | 12.6 | 34.1 | |
| December | 2.4 | 10 | 23.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Mancos River near Towaoc, CO normally run highest?
- May, on the long-term record. The median daily flow that month is about 94.8 cfs, against 2.7 cfs in July, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Mancos River near Towaoc, CO?
- It depends on the month. In January, half of days historically fall near 10.4 cfs, with the middle 80% of days between 2.9 and 22.1 cfs. The month-by-month table on this page gives the full range.
- How long has Mancos River near Towaoc, CO been measured?
- Discharge records at USGS site 09371000 begin in 1921, about 105 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 Mancos River near Towaoc, 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 Mancos River near Towaoc, CO?
- The gauge sits at 37.0275, -108.74149, in Colorado, in hydrologic subbasin 14080107, at an elevation of about 5,052 feet, draining roughly 526 square miles.
- Can I use Mancos River near Towaoc, 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 Mancos River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Mancos River in full.
- Mancos River near Towaoc, CO this page
- Mancos River near Four Corners, CO 801 sq mi