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Twin Buttes Reservoir near San Angelo water level

Reservoir, Twin Buttes Reservoir, Texas, United States

Directions

Very low for mid-October

Surface elevation

1,894.51ft Down 0.10 ft over the last 24 hours

1,900 1,913 1,925

History

1,9001,9101,9201,930ftOct 16Oct 17Oct 18Oct 19Oct 201,9001,9101,9201,930ftOct 16Oct 18Oct 20
1,9001,9101,9201,930ftSep 21Sep 28Oct 5Oct 13Oct 201,9001,9101,9201,930ftSep 21Oct 5Oct 20
1,9001,920ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20261,9001,920ftOct 2025Apr 2026Oct 2026
1,9001,920ftOct 2020Apr 2022Oct 2023Apr 2025Oct 20261,9001,920ftOct 2020Oct 2023Oct 2026
1,9001,920ftJanMarMayJulSepNov20261,9001,920ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

At 1,894.51 ft, Twin Buttes Reservoir near San Angelo is far below normal for mid-October.

That puts it 14.43 ft below the median of 1,908.94 ft for mid-October, based on 7 years of readings. A year ago it stood at 1,905.72 ft (−11.21 ft).

The level is falling, down 0.10 ft over the past 24 hours. With the water still dropping, the shoreline keeps moving out. Over the past 30 days it has moved between 1,894.51 ft and 1,895.89 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

Compared with 7 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
1,908.94 ft14.43 ft below the median for this date
Normal for this date
1,901.13 ft – 1,928.63 ft8 years in 10 fall in this range (7 years of records)
Same day last year
1,905.72 ft−11.21 ft
Lowest and highest in 30 days
1,894.51 ft – 1,895.89 ft
Lowest and highest in 12 months
1,894.61 ft – 1,905.65 ft

Swimming and boating at Twin Buttes Reservoir near San Angelo

Low water changes a lake fast for boaters. Some ramps get shorter or close, docks may be moved, and rocks and sandbars that are usually well under the surface come within reach of a prop.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

What happens at each level

1,991.00 ft
Elevation of Top of Dam
1,969.10 ft
Elevation of Top of Flood Control Pool and Spillway.
1,940.20 ft
Elevation of Conservation Pool.
1,925.00 ft
Elevation of flow line of equalizing channel.
1,894.51 ft
Right now

Impact statements from the U.S. National Weather Service.

Weather at the gauge

Rain in the last 3 days: 0.50 in.

18 Sun 68° 42° – Wind 10 mph
19 Mon 75° 47° – Wind 12 mph
20 Tue 77° 58° – Wind 14 mph
21 Wed 82° 59° – Wind 11 mph
22 Thu 84° 63° – Wind 11 mph
23 Fri 82° 61° – Wind 18 mph
24 Sat 80° 62° – Wind 17 mph

Forecast: Open-Meteo

Sunrise 07:49 AM Sunset 07:06 PM Daylight 11 hr, 17 min First quarter 69%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Twin Buttes ReservoirReservoir 1,894.63 ft Low 0.5 mi
Lake NasworthyLake 1,871.67 ft High 3.6 mi
Spring Creek above Twin Buttes Reservoir near San AngeloRiver gauge, Spring Creek 0.91 ft Low ±0 5.1 mi
Spring Creek above TankersleyRiver gauge, Spring Creek 2.28 ft Very low ±0 7 mi
Red Arroyo at S. Chadbourne St. near San AngeloRiver gauge, Red Arroyo 6.54 ft Normal −0.15 ft 7 mi
Pecan Creek near San AngeloRiver gauge, Pecan Creek −0.04 ft Very low ±0 7 mi
S Concho River above Twin Buttes Reservoir near San AngeloRiver gauge, S Concho River 4.74 ft Low ±0 8 mi
Concho River at San AngeloRiver gauge, Concho River 1.50 ft Normal +0.01 ft 9 mi

Questions and answers

How does Twin Buttes Reservoir near San Angelo compare with last year?

It is 11.21 ft lower than on the same day last year, when the reading was 1,905.72 ft.

What is a normal level for Twin Buttes Reservoir near San Angelo in mid-October?

The median for mid-October is 1,908.94 ft. In 8 years out of 10 the reading falls between 1,901.13 ft and 1,928.63 ft, based on 7 years of records.

Is Twin Buttes Reservoir near San Angelo really 1,894.51 ft deep?

No. 1,894.51 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Twin Buttes Reservoir near San Angelo today?

On Oct 20, 2026, 09:00 AM CDT, the surface elevation was 1,894.51 ft. Down 0.10 ft over the last 24 hours.

Is Twin Buttes Reservoir near San Angelo rising or falling?

Down 0.10 ft over the last 24 hours. Down 0.36 ft over the last 7 days.

Is the level of Twin Buttes Reservoir near San Angelo normal?

Very low for mid-October. Compared with 7 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:08131200 (Agency page)
Coordinates
31.38211, -100.53843 (WGS84)
Vertical datum
NGVD29
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 1,894.51 ft 2026-10-20 14:00 Provisional

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How to cite

U.S. Geological Survey: Twin Buttes Reservoir near San Angelo (usgs:08131200). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/twin-buttes-reservoir-near-san-angelo

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer