USGS Streamgage 09489000
Santa Cruz River near Laveen, AZ
Santa Cruz River near Laveen, AZ is USGS streamgage 09489000 in Arizona, monitoring river discharge in hydrologic subbasin 15050303. It drains a watershed of about 8,581 square miles. Discharge records at this site go back to 1940. 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
- 8,581 sq mi
- Gauge elevation
- 1,023 ft
- Subbasin (HUC-8)
- 15050303
- Coordinates
- 33.23263, -112.16958
- USGS site number
- 09489000
- Records begin
- 1940-01-01 (86 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 87 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 | 7.1 | |
| February | 0 | 0.1 | 7.9 | |
| March | 0 | 0.1 | 8.3 | |
| April | 0 | 0 | 4.9 | |
| May | 0 | 0 | 3.3 | |
| June | 0 | 0 | 1.5 | |
| July | 0 | 0 | 16.7 | |
| August | 0 | 0.2 | 66.6 | |
| September | 0 | 0.1 | 15.7 | |
| October | 0 | 0 | 2.9 | |
| November | 0 | 0 | 1.3 | |
| December | 0 | 0 | 4.7 |
All values in cubic feet per second (cfs).
Common questions
- When does Santa Cruz River near Laveen, AZ normally run highest?
- August, on the long-term record. The median daily flow that month is about 0.2 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 Santa Cruz River near Laveen, 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 7.1 cfs. The month-by-month table on this page gives the full range.
- How long has Santa Cruz River near Laveen, AZ been measured?
- Discharge records at USGS site 09489000 begin in 1940, about 86 years, covering roughly 9,120 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Santa Cruz River near Laveen, AZ?
- The gauge sits at 33.23263, -112.16958, in Arizona, in hydrologic subbasin 15050303, at an elevation of about 1,023 feet, draining roughly 8,581 square miles.
- Can I use Santa Cruz River near Laveen, 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.