States

Angostura Reservoir

South Dakota · Reclamation gauge
3,1663,1683,1703,1723,1743,176
Grey bar: 12-month range 3,166.1–3,175.5 ft.
Water level · NGVD29
3,169.48FT
Storage 58,642 acre-feet
The source publishes no % full figure.
7 days +0.08 ft30 days +1.26 ft
Reading for Oct 24, 2026 · page refreshed Oct 25, 21:16 UTC
Source: U.S. Bureau of Reclamation (RISE)
Worth going today?This Afternoon
Fair – check conditions
Wind up to 16 mph, 41% chance of rain
Wind16 mph
Rain41%
Temp44°F
Level3,169.5 ft
This AfternoonLight Rain Likely · 44°F
NE 16 mph · rain 41%
TonightRain And Snow Showers · 34°F
NE 17 mph · rain 88%
NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Level history

3,168.03,168.53,169.03,169.5ftSep 24Oct 2Oct 9Oct 16Oct 24
3,168.03,168.53,169.03,169.5ftSep 24Oct 9Oct 24
3,1663,1683,1703,1723,1743,176ftDec 2025Mar 2026May 2026Aug 2026Oct 2026
3,1663,1683,1703,1723,1743,176ftDec 2025May 2026Oct 2026

Field notes

On Oct 24, 2026, Angostura Reservoir was at 3,169.48 (NGVD29) ft.

Reclamation reports storage of 58,642 acre-feet for the same day.

Over the past 7 days the lake has been rising (+0.08 ft), and it is +1.26 ft over 30 days.

Readings come from the Bureau of Reclamation's daily reservoir data for Angostura Reservoir and Dam.

Lake facts

Storage (latest)58,642 acre-feet
Gauge / stationAngostura Reservoir and Dam
Elevation datumft (NGVD29)
Gauge location43.3433, -103.4383

Nearby lakes

Deerfield Reservoir50 mi N5,901.62 ft−0.70 ftPactola Reservoir50 mi N4,558.98 ft+0.33 ftBox Butte Reservoir64 mi S · NE3,984.47 ft+0.21 ftLake Alice94 mi S · NE4,159.00 ft±0.00 ftLittle Lake Alice Reservoir96 mi S · NE4,130.99 ft−0.01 ft

Common questions

Is Angostura Reservoir rising or falling?

Over the last 7 days it changed +0.08 ft and over 30 days +1.26 ft.

How full is Angostura Reservoir?

Reclamation publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.

How often is this page updated?

The page is rebuilt automatically every day from Reclamation's published data. Values can be revised later by the source agency.

Where does the data come from?

The U.S. Bureau of Reclamation's RISE data portal (data.usbr.gov). Forecasts come from the National Weather Service.

Daily values published by the Bureau of Reclamation. Reclamation data are provisional and subject to revision unless otherwise noted. This page is not affiliated with or endorsed by the Bureau of Reclamation. See data sources.