USGS Streamgage 09470920
San Pedro at Lewis Springs
San Pedro at Lewis Springs is USGS streamgage 09470920 in Arizona, monitoring river discharge in hydrologic subbasin 15050202. It drains a watershed of about 831 square miles. Discharge records at this site go back to 1995.
Gauge details
- State
- Arizona
- Drainage area
- 831 sq mi
- Gauge elevation
- 5,500 ft
- Subbasin (HUC-8)
- 15050202
- Coordinates
- 31.55444, -110.14
- USGS site number
- 09470920
- Records begin
- 1995-05-20 (31 years)
Common questions
- How long has San Pedro at Lewis Springs been measured?
- Discharge records at USGS site 09470920 begin in 1995, about 31 years, covering roughly 8,196 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is San Pedro at Lewis Springs?
- The gauge sits at 31.55444, -110.14, in Arizona, in hydrologic subbasin 15050202, at an elevation of about 5,500 feet, draining roughly 831 square miles.
- Can I use San Pedro at Lewis Springs 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.