USGS Streamgage 09424900
Santa Maria River near Bagdad, AZ
Santa Maria River near Bagdad, AZ is USGS streamgage 09424900 in Arizona, monitoring river discharge in hydrologic subbasin 15030203. It drains a watershed of about 1,129 square miles. Discharge records at this site go back to 1966. Typical flow runs near 0 cfs in July and 0.4 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Arizona
- Drainage area
- 1,129 sq mi
- Gauge elevation
- 1,374 ft
- Subbasin (HUC-8)
- 15030203
- Coordinates
- 34.30587, -113.34715
- USGS site number
- 09424900
- Records begin
- 1966-04-18 (60 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 60 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 | 0.3 | 260.7 | |
| February | 0 | 3.1 | 386.1 | |
| March | 0 | 9.7 | 395.1 | |
| April | 0 | 0.4 | 78.8 | |
| May | 0 | 0 | 21.2 | |
| June | 0 | 0 | 1.2 | |
| July | 0 | 0 | 0.1 | |
| August | 0 | 0 | 6.1 | |
| September | 0 | 0 | 5.9 | |
| October | 0 | 0 | 1 | |
| November | 0 | 0 | 3.8 | |
| December | 0 | 0 | 75.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Santa Maria River near Bagdad, AZ normally run highest?
- March, on the long-term record. The median daily flow that month is about 9.7 cfs, against 0 cfs in May, 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 Maria River near Bagdad, AZ?
- It depends on the month. In January, half of days historically fall near 0.3 cfs, with the middle 80% of days between 0 and 260.7 cfs. The month-by-month table on this page gives the full range.
- How long has Santa Maria River near Bagdad, AZ been measured?
- Discharge records at USGS site 09424900 begin in 1966, about 60 years, covering roughly 9,119 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Santa Maria River near Bagdad, AZ?
- The gauge sits at 34.30587, -113.34715, in Arizona, in hydrologic subbasin 15030203, at an elevation of about 1,374 feet, draining roughly 1,129 square miles.
- Can I use Santa Maria River near Bagdad, AZ 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.