USGS Streamgage 09479350
Gila River near Maricopa, AZ
Gila River near Maricopa, AZ is USGS streamgage 09479350 in Arizona, monitoring river discharge in hydrologic subbasin 15050100. It drains a watershed of about 19,915 square miles. Discharge records at this site go back to 1995. Typical flow runs near 0 cfs in July and 0 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- Arizona
- Drainage area
- 19,915 sq mi
- Gauge elevation
- 1,114 ft
- Subbasin (HUC-8)
- 15050100
- Coordinates
- 33.16866, -112.00736
- USGS site number
- 09479350
- Records begin
- 1995-05-19 (31 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 32 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 | 0 | |
| February | 0 | 0 | 0 | |
| March | 0 | 0 | 0 | |
| April | 0 | 0 | 0 | |
| May | 0 | 0 | 0 | |
| June | 0 | 0 | 0 | |
| July | 0 | 0 | 0 | |
| August | 0 | 0 | 0 | |
| September | 0 | 0 | 0 | |
| October | 0 | 0 | 0 | |
| November | 0 | 0 | 0 | |
| December | 0 | 0 | 0 |
All values in cubic feet per second (cfs).
Common questions
- When does Gila River near Maricopa, AZ normally run highest?
- January, on the long-term record. The median daily flow that month is about 0 cfs, against 0 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 Gila River near Maricopa, AZ?
- It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 0 cfs. The month-by-month table on this page gives the full range.
- How long has Gila River near Maricopa, AZ been measured?
- Discharge records at USGS site 09479350 begin in 1995, about 31 years, covering roughly 9,111 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Gila River near Maricopa, AZ?
- The gauge sits at 33.16866, -112.00736, in Arizona, in hydrologic subbasin 15050100, at an elevation of about 1,114 feet, draining roughly 19,915 square miles.
- Can I use Gila River near Maricopa, 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.