USGS Streamgage 08330875
Rio Grande at Isleta Lakes near Isleta, NM
Rio Grande at Isleta Lakes near Isleta, NM is USGS streamgage 08330875 in New Mexico, monitoring river discharge in hydrologic subbasin 13020203. It drains a watershed of about 17,666 square miles. Discharge records at this site go back to 2002. Typical flow runs near 499.2 cfs in July and 806.5 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- New Mexico
- Drainage area
- 17,666 sq mi
- Gauge elevation
- 4,896 ft
- Subbasin (HUC-8)
- 13020203
- Coordinates
- 34.94667, -106.68028
- USGS site number
- 08330875
- Records begin
- 2002-10-01 (24 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 23 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 | 364.3 | 543.1 | 769.3 | |
| February | 405.8 | 596.6 | 902.2 | |
| March | 383 | 683.2 | 1,720 | |
| April | 417.1 | 806.5 | 3,232.3 | |
| May | 494.5 | 1,425.1 | 4,594.2 | |
| June | 374.7 | 839.8 | 4,309.3 | |
| July | 226.6 | 499.2 | 1,288.5 | |
| August | 132.1 | 413.9 | 953.9 | |
| September | 77.1 | 255.8 | 596.8 | |
| October | 90.3 | 258.9 | 743.9 | |
| November | 277.9 | 608.7 | 1,184.5 | |
| December | 400.8 | 693.6 | 1,276.9 |
All values in cubic feet per second (cfs).
Common questions
- When does Rio Grande at Isleta Lakes near Isleta, NM normally run highest?
- May, on the long-term record. The median daily flow that month is about 1,425.1 cfs, against 255.8 cfs in September, the lowest month. These are historical normals for the date, not a forecast and not today's reading.
- What is a normal flow for Rio Grande at Isleta Lakes near Isleta, NM?
- It depends on the month. In January, half of days historically fall near 543.1 cfs, with the middle 80% of days between 364.3 and 769.3 cfs. The month-by-month table on this page gives the full range.
- How long has Rio Grande at Isleta Lakes near Isleta, NM been measured?
- Discharge records at USGS site 08330875 begin in 2002, about 24 years, covering roughly 8,706 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Rio Grande at Isleta Lakes near Isleta, NM?
- The gauge sits at 34.94667, -106.68028, in New Mexico, in hydrologic subbasin 13020203, at an elevation of about 4,896 feet, draining roughly 17,666 square miles.
- Can I use Rio Grande at Isleta Lakes near Isleta, NM 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.
Other gauges in this subbasin
- Rio Grande near Bosque Farms, NM
- Rio Grande at State Hwy 346 near Bosque, NM
- Rio Grande Floodway near Bernardo, NM
- Rio Grande Floodway at San Acacia, NM
- Rio Grande at Bridge near Escondida, NM
- Rio Grande above US Hwy 380 near San Antonio, NM
- Rio Grande Conveyance Channel at San Marcial, NM
- Rio Grande Floodway at San Marcial, NM