Angostura Reservoir

Angostura Reservoir

Hot Springs, Fall River County, SD
7mi²
969.00ft
Directions
Lake Information

Nestled amid the picturesque landscapes of Fall River County, South Dakota, Angostura Reservoir stands as a testament to the ingenuity of human engineering and the natural beauty of the Cheyenne River basin. Created in 1949 with the construction of the Angostura Dam by the U.S. Bureau of Reclamation, this sprawling reservoir has since evolved into a haven for outdoor enthusiasts and nature lovers alike. Stretching across 36 miles of shoreline, Angostura Reservoir beckons visitors with its inviting waters and sandy beaches, offering a myriad of recreational opportunities to delight adventurers of all ages. Whether camping under the starlit sky, cruising along its tranquil waters in a boat, or casting a line in search of the next big catch, the reservoir promises endless hours of summer fun and excitement. But it's not just the array of water sports and leisure activities that draw visitors to Angostura Reservoir—it's also the promise of a thriving fishery brimming with an abundance of aquatic life. Anglers flock to these pristine waters in pursuit of the prized walleye, smallmouth bass, crappie, and northern pike that call the reservoir home. Largemouth bass, perch, and bluegill further add to the allure, ensuring that there's always a new challenge waiting beneath the surface. Beneath the shimmering waves, Angostura Reservoir reveals its hidden depths, with an average depth of 29 feet and the deepest portion plunging to a staggering 75 feet when full. Yet, despite its impressive dimensions, the reservoir maintains a comfortable average summer temperature of 66 degrees Fahrenheit, inviting swimmers and sunbathers to bask in the warmth of its embrace. In summary, Angostura Reservoir epitomizes the perfect blend of natural splendor and recreational excitement, offering visitors an unparalleled opportunity to connect with the great outdoors. Whether seeking adventure on the water or simply seeking solace amidst the serenity of its shores, Angostura Reservoir captivates the hearts and minds of all who venture to its tranquil waters.

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Current Conditions

52°F°
Feels like 53°F°
PartlyCloudy
Today's High
58°F°
Today's Low
43°F°

Water Temperature

59°F
Updated: (Apr 29)
Sign in to contribute temps.

Current water temperature for Angostura Reservoir is 59°F.

Current Snapshot

Wind4 mph NNW (Gust 12 mph)
Pressure
29.87 inHg
Visibility11 mi
Humidity73%
Cloud Cover52%

Forecast: Thursday, May 1

Day 1 of 9

Hourly Insights

7 AM
44°F°
10 AM
54°F°
1 PM
58°F°
9%
4 PM
57°F°
12%

Temperature

High
58°F°
Low
43°F°

Precipitation

Chance23%
Amount0.14"
Typerain

Wind

7mph
Avg Speed
Gusts up to
23mph
CalmModerateStrong
Max Speed15 mph

Sun, Moon & UV

Sunrise11:46 AM
Sunset1:56 AM
Moon PhasewaxingCrescent
Max UV Index4 (Moderate)

Solunar Fishing Forecast

Action Rating
2/5

Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

10:24 PM - 12:54 AM

8:01 AM - 10:31 AM

Minor Times (Good)

2:02 PM - 3:32 PM

6:00 AM - 6:00 AM

Outlook for Thursday at Angostura Reservoir

Expect temperatures ranging from 43°F to 58°F. There's a 23% chance of rain, potentially bringing around 0.14" rain. Winds will be averaging 7 mph, with potential gusts reaching up to 23 mph. The maximum UV index will be 4 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 2/5 (Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 10:24 PM and 8:01 AM, or try the minor windows near 2:02 PM and 6:00 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Angostura Reservoir.

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April 30th 2025

Lake Information

Elevation
969 ft
Area
7 mi²
Coordinates
43.337, -103.424

Weather Forecast

Thursday

58°F
43°F

Friday

63°F
37°F

Saturday

75°F
39°F

Sunday

77°F
47°F

Monday

69°F
49°F

Tuesday

61°F
44°F

Wednesday

67°F
44°F

Thursday

70°F
46°F

Friday

75°F
51°F
Thursday - 5/1/2025
58°F
43°F
12am
46°F
59°F
29.98 hPa
5 mph
WSW
G: 9 mph
2am
45°F
59°F
29.99 hPa
6 mph
WNW
G: 13 mph
4am
43°F
59°F
30.03 hPa
6 mph
WNW
G: 12 mph
6am
43°F
59°F
30.02 hPa
6 mph
SW
G: 8 mph
8am
48°F
59°F
30.04 hPa
5 mph
W
G: 11 mph
10am
54°F
59°F
30.03 hPa
7 mph
NW
G: 11 mph
12pm
57°F
59°F
29.99 hPa
11 mph
WNW
G: 21 mph
2pm
57°F
59°F
29.97 hPa
15 mph
NW
G: 23 mph
4pm
57°F
59°F
29.96 hPa
10 mph
NNW
G: 21 mph
6pm
54°F
59°F
29.99 hPa
11 mph
NNE
G: 17 mph
8pm
50°F
59°F
30.02 hPa
4 mph
NW
G: 9 mph
10pm
46°F
59°F
30.08 hPa
5 mph
NW
G: 13 mph

Water Temperature History

Trends for Angostura Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

35°F

On Dec 15

Coldest point in the Last 12 Months.

Average in Period

55°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: July (78°F).
  • Coolest avg: December (36°F).
  • Rapid warming often occurs: May → June (+10°F).
  • Sharpest cooling trend: September → October (-20°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm06121824

Wind Direction

249°

Pressure

1015 mb

Cloud Cover

19%

Visibility

12 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About Angostura Reservoir

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