USGS Streamgage 08317400
Rio Grande below Cochiti Dam, NM
Rio Grande below Cochiti Dam, NM is USGS streamgage 08317400 in New Mexico, monitoring river discharge in hydrologic subbasin 13020201. It drains a watershed of about 14,900 square miles. Discharge records at this site go back to 1970. Typical flow runs near 894.5 cfs in July and 1,248.7 cfs in April, with the higher of the two arriving in April.
Gauge details
- State
- New Mexico
- Drainage area
- 14,900 sq mi
- Gauge elevation
- 5,229 ft
- Subbasin (HUC-8)
- 13020201
- Coordinates
- 35.618, -106.32394
- USGS site number
- 08317400
- Records begin
- 1970-10-01 (56 years)
Typical flow by month
Long-term daily discharge percentiles from the USGS record (up to 56 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 | 447 | 660.6 | 1,105.2 | |
| February | 498.6 | 712.7 | 1,222.3 | |
| March | 531.8 | 920.6 | 1,926.5 | |
| April | 597.4 | 1,248.7 | 3,643.7 | |
| May | 755.5 | 2,614.2 | 5,462.3 | |
| June | 654.2 | 1,625.7 | 5,565.3 | |
| July | 360 | 894.5 | 3,198.4 | |
| August | 311.2 | 734.5 | 1,297.4 | |
| September | 200 | 588.5 | 1,098 | |
| October | 199.7 | 472.1 | 938 | |
| November | 342.1 | 738 | 1,428.7 | |
| December | 442.2 | 782.2 | 1,481 |
All values in cubic feet per second (cfs).
Common questions
- When does Rio Grande below Cochiti Dam, NM normally run highest?
- May, on the long-term record. The median daily flow that month is about 2,614.2 cfs, against 472.1 cfs in October, 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 below Cochiti Dam, NM?
- It depends on the month. In January, half of days historically fall near 660.6 cfs, with the middle 80% of days between 447 and 1,105.2 cfs. The month-by-month table on this page gives the full range.
- How long has Rio Grande below Cochiti Dam, NM been measured?
- Discharge records at USGS site 08317400 begin in 1970, about 56 years, covering roughly 9,126 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.
- Where is Rio Grande below Cochiti Dam, NM?
- The gauge sits at 35.618, -106.32394, in New Mexico, in hydrologic subbasin 13020201, at an elevation of about 5,229 feet, draining roughly 14,900 square miles.
- Can I use Rio Grande below Cochiti Dam, 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.