American Falls Reservoir

American Falls Reservoir

American Falls, Power County, ID
88mi²
1324.00ft
Directions
Lake Information

American Falls Reservoir is located in Power County, Idaho, the American Falls Reservoir is a massive body of water that spans over 56,000 acres, making it one of the largest reservoirs in the state. The reservoir is created by a dam built on the Snake River and provides irrigation water for farms, hydroelectric power, and a range of recreational activities for visitors. The reservoir is a popular destination for anglers, boaters, and outdoor enthusiasts, offering a diverse range of fishing opportunities and scenic surroundings. Anglers visiting the American Falls Reservoir can expect to catch a wide variety of fish species, including Rainbow Trout, Brown Trout, Walleye, Channel Catfish, and Smallmouth Bass. The reservoir's Rainbow Trout and Brown Trout populations are highly sought after, with many anglers targeting them using fly fishing techniques or spinning gear. The Walleye population in the reservoir has also been thriving, providing anglers with a challenging and rewarding fishing experience. The American Falls Reservoir is also known for its Smallmouth Bass population, which can be caught using a variety of techniques, including fishing around the lake's rocky shorelines and submerged structures. Channel Catfish are also abundant in the reservoir, providing anglers with a unique fishing experience. These fish can be caught using live bait, cut bait, or even stink bait, with many anglers targeting them around the lake's drop-offs and submerged structures. In addition to fishing, the American Falls Reservoir offers a range of recreational activities, including boating, swimming, and camping. The lake's calm waters are ideal for boating, providing visitors with a peaceful and scenic setting for a leisurely boat ride. The reservoir's beaches are also popular for swimming and sunbathing during the summer months. Several campgrounds are situated around the lake's shores, providing visitors with a range of camping options, from primitive tent camping to full RV hookups. The American Falls Reservoir is also home to a variety of wildlife, including bald eagles, ospreys, and a range of waterfowl. The surrounding hills and forests provide excellent opportunities for hiking and wildlife viewing, with many visitors catching glimpses of deer, elk, and other native wildlife. In conclusion, the American Falls Reservoir is a massive and vibrant body of water located in Power County, Idaho, offering a range of recreational activities for outdoor enthusiasts. Its diverse fish populations, scenic beauty, and tranquil atmosphere make it an ideal spot for fishing, boating, swimming, camping, and wildlife viewing. Whether you're an experienced angler or simply looking to enjoy the great outdoors, the American Falls Reservoir is a must-visit destination in Idaho.

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Current Conditions

73°F°
Feels like 74°F°
MostlyClear
Today's High
76°F°
Today's Low
49°F°

Water Temperature

52°F
Updated: (May 7)
Sign in to contribute temps.

Current water temperature for American Falls Reservoir is 52°F.

Current Snapshot

Wind7 mph WSW (Gust 12 mph)
Pressure
29.89 inHg
Visibility35 mi
Humidity22%
Cloud Cover17%

Forecast: Thursday, May 8

Day 1 of 9

Hourly Insights

7 AM
50°F°
10 AM
62°F°
1 PM
73°F°
4 PM
75°F°

Temperature

High
76°F°
Low
49°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

8mph
Avg Speed
Gusts up to
18mph
CalmModerateStrong
Max Speed13 mph

Sun, Moon & UV

Sunrise12:16 PM
Sunset2:40 AM
Moon PhasewaxingGibbous
Max UV Index9 (Very High)

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)

6:00 AM - 6:00 AM

1:02 PM - 3:32 PM

Minor Times (Good)

10:37 PM - 12:07 AM

9:56 AM - 11:26 AM

Outlook for Thursday at American Falls Reservoir

Expect temperatures ranging from 49°F to 76°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 8 mph, with potential gusts reaching up to 18 mph. The maximum UV index will be 9 (Very High), 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 6:00 AM and 1:02 PM, or try the minor windows near 10:37 PM and 9:56 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for American Falls Reservoir.

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May 8th 2025

Lake Information

Elevation
1324 ft
Area
88 mi²
Coordinates
42.779, -112.875

Weather Forecast

Thursday

76°F
49°F

Friday

82°F
47°F

Saturday

85°F
53°F

Sunday

78°F
59°F

Monday

67°F
49°F

Tuesday

58°F
44°F

Wednesday

52°F
40°F

Thursday

62°F
41°F

Friday

63°F
41°F
Thursday - 5/8/2025
76°F
49°F
12am
58°F
52°F
29.95 hPa
6 mph
S
G: 13 mph
2am
57°F
52°F
29.96 hPa
7 mph
S
G: 14 mph
4am
54°F
52°F
29.96 hPa
8 mph
S
G: 15 mph
6am
50°F
52°F
29.99 hPa
5 mph
SSW
G: 11 mph
8am
54°F
52°F
30.04 hPa
3 mph
NNE
G: 4 mph
10am
62°F
52°F
30.05 hPa
5 mph
WSW
G: 10 mph
12pm
71°F
52°F
30.06 hPa
8 mph
WSW
G: 13 mph
2pm
75°F
52°F
30.03 hPa
12 mph
WSW
G: 16 mph
4pm
75°F
52°F
30.02 hPa
12 mph
WSW
G: 16 mph
6pm
76°F
52°F
30.00 hPa
13 mph
WSW
G: 18 mph
8pm
71°F
52°F
30.01 hPa
7 mph
WSW
G: 13 mph
10pm
61°F
52°F
30.06 hPa
6 mph
SW
G: 8 mph

Water Temperature History

Trends for American Falls Reservoir

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

32°F

On Jan 1

Coldest point in the Last 12 Months.

Average in Period

48°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 (73°F).
  • Coolest avg: December (34°F).
  • Rapid warming often occurs: May → June (+12°F).
  • Sharpest cooling trend: October → November (-13°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm05101520

Wind Direction

188°

Pressure

1014 mb

Cloud Cover

6%

Visibility

25 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About American Falls Reservoir

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