Pecos River below Sumner Dam, NM

Gauge details

State

New Mexico

Drainage area

4,390 sq mi

Gauge elevation

4,145 ft

Subbasin (HUC-8)

13060003

Coordinates

34.60406, -104.38792

USGS site number

08384500

Records begin

1912-10-01 (114 years)

Rivermatics forecast

14-day flow outlook

14-day flow forecast

Based on observations through September 15 for Pecos River below Sumner 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 90 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 Pecos River below Sumner Dam, NM normally run highest?

June, on the long-term record. The median daily flow that month is about 105.2 cfs, against 2.4 cfs in November, the lowest month. These are historical normals for the date, not a forecast and not today's reading.

What is a normal flow for Pecos River below Sumner Dam, NM?

It depends on the month. In January, half of days historically fall near 4.2 cfs, with the middle 80% of days between 0.2 and 62.3 cfs. The month-by-month table on this page gives the full range.

How long has Pecos River below Sumner Dam, NM been measured?

Discharge records at USGS site 08384500 begin in 1912, about 114 years, covering roughly 9,130 days of published daily values. The long record is what makes the monthly percentiles on this page meaningful.

Is there a flow forecast for Pecos River below Sumner 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 Pecos River below Sumner Dam, NM?

The gauge sits at 34.60406, -104.38792, in New Mexico, in hydrologic subbasin 13060003, at an elevation of about 4,145 feet, draining roughly 4,390 square miles.

Can I use Pecos River below Sumner 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 Pecos River

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

• Pecos River near Pecos, NM 189 sq mi
• Pecos River near Anton Chico, NM 1,050 sq mi
• Pecos River above Canon del Uta near Colonias, NM 2,330 sq mi
• Pecos River above Santa Rosa Lake, NM 2,340 sq mi
• Pecos River below Santa Rosa Dam, NM 2,430 sq mi
• Pecos River near Puerto de Luna, NM 3,970 sq mi
• Pecos River below Sumner Dam, NM this page
• Pecos River below Taiban Creek near Fort Sumner, NM 5,908 sq mi
• Pecos River near Dunlap, NM 6,647 sq mi
• Pecos River near Acme, NM 11,380 sq mi
• Pecos River near Lake Arthur, NM 14,760 sq mi
• Pecos River near Artesia, NM 15,300 sq mi
• Pecos River below Brantley Dam near Carlsbad, NM 17,650 sq mi
• Pecos River at Damsite 3 near Carlsbad, NM 17,980 sq mi
• Pecos River below Avalon Dam, NM 18,080 sq mi
• Pecos River below Dark Canyon at Carlsbad, NM 18,550 sq mi
• Pecos River near Malaga, NM 19,190 sq mi
• Pecos River at Pierce Canyon Crossing, NM 19,260 sq mi
• Pecos River at Red Bluff, NM 19,540 sq mi
• Pecos River near Orla, TX 25,070 sq mi
• Pecos River at FM 3398 near Pecos, TX 26,230 sq mi
• Pecos River at RR 1776 near Grandfalls, TX 34,740 sq mi
• Pecos River near Girvin, TX 37,300 sq mi
• Pecos River near Sheffield, TX 40,685 sq mi
• Pecos River at Brotherton Rh near Pandale, TX 42,169 sq mi
• Pecos River near Langtry, TX 44,015 sq mi

Other gauges in this subbasin

• Fort Sumner Main Canal near Fort Sumner, NM
• Sand Gate Diversion From Ft Sumner Canal at Ft Sumner, NM
• Pecos River below Taiban Creek near Fort Sumner, NM
• Pecos River near Dunlap, NM