USGS Streamgage 09410100
Santa Clara River below Winsor Dam, near Santa Clara, UT
Santa Clara River below Winsor Dam, near Santa Clara, UT is USGS streamgage 09410100 in Utah, monitoring river discharge in hydrologic subbasin 15010008. It sits on the Santa Clara River, alongside 3 other gauges Rivermatics tracks on the same river. It drains a watershed of about 378 square miles. Discharge records at this site go back to 1971. Typical flow runs near 12.9 cfs in July and 14.8 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
- Utah
- Drainage area
- 378 sq mi
- Gauge elevation
- 3,195 ft
- Subbasin (HUC-8)
- 15010008
- Coordinates
- 37.19, -113.76806
- USGS site number
- 09410100
- Records begin
- 1971-11-24 (55 years)
- Rivermatics forecast
- 14-day flow outlook
14-day flow forecast
Based on observations through for Santa Clara River below Winsor Dam, near Santa Clara, UT. 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 |
|---|---|---|---|---|
| 0.8 | 0.9 | 1 | ||
| 0.8 | 1.1 | 4.1 | ||
| 0.7 | 1 | 2.3 | ||
| 0.7 | 0.9 | 1.5 | ||
| 0.6 | 0.9 | 1.5 | ||
| 0.6 | 0.9 | 1.4 | ||
| 0.6 | 0.9 | 1.6 | ||
| 0.6 | 0.9 | 1.5 | ||
| 0.5 | 0.9 | 1.4 | ||
| 0.5 | 1 | 1.9 | ||
| 0.5 | 1 | 1.8 | ||
| 0.4 | 0.9 | 1.6 | ||
| 0.5 | 0.9 | 1.6 | ||
| 0.4 | 0.9 | 1.5 |
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 54 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 | 0 | 1.6 | 17.5 | |
| February | 0.2 | 2.9 | 60.1 | |
| March | 1.2 | 10.7 | 113.8 | |
| April | 2.3 | 14.8 | 113.8 | |
| May | 1.6 | 15 | 107.5 | |
| June | 1.1 | 13.8 | 88.8 | |
| July | 0.8 | 12.9 | 30.5 | |
| August | 0.6 | 11.6 | 23.7 | |
| September | 0.1 | 5.7 | 19.2 | |
| October | 0 | 0.6 | 9.8 | |
| November | 0 | 1.6 | 13.5 | |
| December | 0 | 1 | 10.8 |
All values in cubic feet per second (cfs).
Common questions
- When does Santa Clara River below Winsor Dam, near Santa Clara, UT normally run highest?
- May, on the long-term record. The median daily flow that month is about 15 cfs, against 0.6 cfs in October, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Santa Clara River below Winsor Dam, near Santa Clara, UT?
- It depends on the month. In January, half of days historically fall near 1.6 cfs, with the middle 80% of days between 0 and 17.5 cfs. The month-by-month table on this page gives the full range.
- How long has Santa Clara River below Winsor Dam, near Santa Clara, UT been measured?
- Discharge records at USGS site 09410100 begin in 1971, about 55 years, covering roughly 4,389 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Is there a flow forecast for Santa Clara River below Winsor Dam, near Santa Clara, UT?
- 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 Santa Clara River below Winsor Dam, near Santa Clara, UT?
- The gauge sits at 37.19, -113.76806, in Utah, in hydrologic subbasin 15010008, at an elevation of about 3,195 feet, draining roughly 378 square miles.
- Can I use Santa Clara River below Winsor Dam, near Santa Clara, UT 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 Santa Clara River
Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Santa Clara River in full.
- Santa Clara River near Pine Valley, UT 19 sq mi
- Santa Clara River above Baker Reservoir, near Central, UT 116 sq mi
- Santa Clara River below Winsor Dam, near Santa Clara, UT this page
- Santa Clara River at St. George, UT 541 sq mi
Other gauges in this subbasin
- Santa Clara River at St. George, UT
- East Fork Virgin River near Glendale, UT
- East Fork Virgin River near Springdale, UT
- North Fork Virgin River near Springdale, UT
- Virgin River at Virgin, UT
- Virgin River Ab La Verkin Creek near La Verkin, UT
- Leeds Creek near Leeds, UT
- Virgin River Ab Quail Creek near Hurricane, UT