Costilla Creek below Costilla Dam, NM

Gauge details

State

New Mexico

Drainage area

55 sq mi

Gauge elevation

9,300 ft

Subbasin (HUC-8)

13020101

Coordinates

36.87281, -105.28367

USGS site number

08254000

Records begin

1937-04-09 (89 years)

Rivermatics forecast

14-day flow outlook

14-day flow forecast

Based on observations through September 15 for Costilla Creek below Costilla Dam, NM. Each day carries a median estimate and the band the model expects the flow to fall within — not a single number to plan against. Forecasts are re-issued daily; see the live screen for the current outlook.

All values in cubic feet per second (cfs). Estimates only — do not use them for navigation or for any safety, rescue, or emergency decision.

Typical flow by month

Long-term daily discharge percentiles from the USGS record (up to 89 years of data), averaged within each month. These describe the historical normal range — they are not a forecast and not today's reading.

All values in cubic feet per second (cfs).

Common questions

When does Costilla Creek below Costilla Dam, NM normally run highest?

July, on the long-term record. The median daily flow that month is about 60.1 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 Costilla Creek below Costilla Dam, NM?

It depends on the month. In January, half of days historically fall near 0 cfs, with the middle 80% of days between 0 and 0.6 cfs. The month-by-month table on this page gives the full range.

How long has Costilla Creek below Costilla Dam, NM been measured?

Discharge records at USGS site 08254000 begin in 1937, about 89 years, covering roughly 4,477 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.

Is there a flow forecast for Costilla Creek below Costilla Dam, NM?

Yes. Rivermatics trains a machine-learned model — a temporal-fusion transformer — on this basin's observed flows, weather, and snowpack, and issues a daily flow outlook reaching 14 days ahead: a median estimate inside a confidence band, not a single number to bet on. Every forecast is scored against days the model never trained on, and that track record is published on the live gauge screen. Open live conditions to see the current outlook.

Where is Costilla Creek below Costilla Dam, NM?

The gauge sits at 36.87281, -105.28367, in New Mexico, in hydrologic subbasin 13020101, at an elevation of about 9,300 feet, draining roughly 55 square miles.

Can I use Costilla Creek below Costilla 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.

Upstream and downstream on the Costilla Creek

Every gauge Rivermatics tracks on this river, ordered by drainage area — upstream first. See the Costilla Creek in full.

• Costilla Creek above Costilla Dam, NM 25 sq mi
• Costilla Creek below Costilla Dam, NM this page
• Costilla Creek near Costilla, NM 195 sq mi
• Costilla Creek near Garcia, CO 200 sq mi

Other gauges in this subbasin

• Costilla Creek near Costilla, NM
• Costilla Creek near Garcia, CO
• Rio Grande near Cerro, NM
• Red River near Questa, NM
• Red River below Fish Hatchery, near Questa, NM
• Rio Hondo near Valdez, NM
• Rio Pueblo de Taos near Taos, NM
• Rio Lucero near Arroyo Seco, NM