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

48°F°
Feels like 30°F°
Windy
Today's High
65°F°
Today's Low
36°F°

Water Temperature

53°F
Updated: (May 4)
Sign in to contribute temps.

Current water temperature for American Falls Reservoir is 53°F.

Current Snapshot

Wind20 mph NE (Gust 31 mph)
Pressure
29.90 inHg
Visibility13 mi
Humidity62%
Cloud Cover98%

Forecast: Tuesday, May 6

Day 1 of 9

Hourly Insights

7 AM
39°F°
10 AM
46°F°
1 PM
58°F°
4 PM
64°F°

Temperature

High
65°F°
Low
36°F°

Precipitation

Chance82%
Amount0.12"
Typerain

Wind

9mph
Avg Speed
Gusts up to
33mph
CalmModerateStrong
Max Speed20 mph

Sun, Moon & UV

Sunrise12:18 PM
Sunset2:38 AM
Moon PhasewaxingGibbous
Max UV Index5 (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)

3:11 AM - 5:41 AM

11:42 AM - 2:12 PM

Minor Times (Good)

8:32 PM - 10:02 PM

9:20 AM - 10:50 AM

Outlook for Tuesday at American Falls Reservoir

Expect temperatures ranging from 36°F to 65°F. There's a 82% chance of rain, potentially bringing around 0.12" rain. Winds will be averaging 9 mph, with potential gusts reaching up to 33 mph. The maximum UV index will be 5 (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 3:11 AM and 11:42 AM, or try the minor windows near 8:32 PM and 9:20 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 4th 2025

Lake Information

Elevation
1324 ft
Area
88 mi²
Coordinates
42.779, -112.875

Weather Forecast

Tuesday

65°F
36°F

Wednesday

72°F
41°F

Thursday

76°F
49°F

Friday

83°F
48°F

Saturday

83°F
51°F

Sunday

79°F
55°F

Monday

69°F
51°F

Tuesday

66°F
44°F

Wednesday

53°F
39°F
Tuesday - 5/6/2025
65°F
36°F
12am
40°F
53°F
29.96 hPa
20 mph
NE
G: 33 mph
2am
36°F
53°F
29.98 hPa
15 mph
NE
G: 25 mph
4am
37°F
53°F
29.98 hPa
13 mph
NE
G: 23 mph
6am
38°F
53°F
29.98 hPa
9 mph
NE
G: 16 mph
8am
41°F
53°F
30.02 hPa
10 mph
NE
G: 18 mph
10am
46°F
53°F
30.03 hPa
12 mph
NE
G: 18 mph
12pm
55°F
53°F
30.02 hPa
9 mph
NE
G: 18 mph
2pm
61°F
53°F
29.98 hPa
9 mph
NE
G: 16 mph
4pm
64°F
53°F
29.94 hPa
8 mph
NE
G: 15 mph
6pm
65°F
53°F
29.93 hPa
7 mph
NE
G: 12 mph
8pm
61°F
53°F
29.94 hPa
3 mph
NE
G: 6 mph
10pm
53°F
53°F
29.99 hPa
3 mph
ESE
G: 4 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 (+10°F).
  • Sharpest cooling trend: October → November (-13°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm09182736

Wind Direction

38°

Pressure

1015 mb

Cloud Cover

100%

Visibility

9 miles

Daily Pressure Forecast

TueWedThuFriSatSunMonTueWed0.008.8617.7226.5835.44
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Frequently Asked Questions About American Falls Reservoir

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