Anderson Ranch Reservoir Water Level
U.S. Army Corps of Engineers · Idaho
Latest reading Oct 26, 2:00 AM · elevation
Anderson Ranch Reservoir is 43.7 ft below normal pool today (4,150.28 ft vs 4,194.00 ft). It is 48% full.
Water level chart
ft above sea levelNormal pool (4,194.0 ft) is 43.7 ft above the latest reading, off this chart
Reading
Anderson Ranch Reservoir fishing report & conditions
updated Oct 26, 12:50 PM ETLake 43.7 ft below normal pool, moderate S wind — good fall fishing day (6/10), best window 8:28 AM–9:28 AM (moonset near sunrise).
- Water temp—no water-temperature sensor on this water yet
- Air temphigh 58°F / low 29°FPartly Sunny then Chance Showers And Thunderstorms
- WindModerate S7–15 mph 6 AM–6 PM, gusts to 22
- Level43.7 ft below normal poolNo 24-hour level change available
Official Idaho fishing info: Idaho Fish and Game — Idaho Fishing Planner
Best fishing times today
Today is a good fishing day (solunar + local conditions)
6/10
Full moon · 99% lit · New moon Mon, Nov 9 · Sunrise 8:09 AM · Sunset 6:40 PM
Major fishing times
- Moon overhead12:26 AM–2:26 AM
- Moon underfoot12:54 PM–2:54 PM
Minor fishing times
- Moonset8:28 AM–9:28 AMSunrise
- Moonrise6:10 PM–7:10 PMSunset
Fishing times for the next 7 days
| TodayOct 26 | 6/10Good | Major 12:26 AM–2:26 AM · 12:54 PM–2:54 PM Minor 8:28 AM–9:28 AM · 6:10 PM–7:10 PM Moderate wind 7–15 mph |
|---|---|---|
| TueOct 27 | 5/10Fair | Major 1:23 AM–3:23 AM · 1:53 PM–3:53 PM Minor 9:49 AM–10:49 AM · 6:50 PM–7:50 PM Light wind 4–8 mph |
| WedOct 28 | 3/10Poor | Major 2:24 AM–4:24 AM · 2:55 PM–4:55 PM Minor 11:07 AM–12:07 PM · 7:40 PM–8:40 PM Light wind 2–8 mph |
| ThuOct 29 | 5/10Fair | Major 3:28 AM–5:28 AM · 4:00 PM–6:00 PM Minor 12:18 PM–1:18 PM · 8:44 PM–9:44 PM Light wind 4–7 mph |
| FriOct 30 | 3/10Poor | Major 4:32 AM–6:32 AM · 5:04 PM–7:04 PM Minor 1:15 PM–2:15 PM · 9:57 PM–10:57 PM Calm wind 2–6 mph |
| SatOct 31 | 4/10Fair | Major 5:34 AM–7:34 AM · 6:03 PM–8:03 PM Minor 2:00 PM–3:00 PM · 11:15 PM–12:15 AM Calm wind 2–5 mph |
| SunNov 1 | 5/10Fair | Major 5:31 AM–7:31 AM · 5:58 PM–7:58 PM Minor 1:34 PM–2:34 PM · 11:32 PM–12:32 AM Light wind 2–7 mph |
How this rating works
Solunar theory says fish feed more when the moon is overhead or underfoot (major periods, about 2 hours) and around moonrise and moonset (minor periods, about 1 hour). On a lake or river there is no tide, so instead of tide changes we score the local conditions anglers watch: the barometric pressure trend, the wind, whether the lake level is steady, and the water temperature where it is measured.
| Base | every day starts at 1 | 1 |
|---|---|---|
| Sunrise / sunset | a period overlaps sunrise or sunset ±1 h: major +2, minor +1 (max 3) (Moonset × sunrise +1; Moonrise × sunset +1) | 2 |
| Moon phase | within 2 days of a new or full moon +2, within 4 days +1 (today: 0.5 days) | 2 |
| Local conditions | pressure 6 AM→6 PM: falling +2, steady or slowly rising +1, rising fast 0 · daytime wind 4–15 mph +1, over 20 mph (or gusts over 30) −1 · level within ±0.25 ft in 24 h +1 · water 55–75°F +1, below 45°F or above 85°F −1 (0 to 4 in total)
| 1 |
| Today | 6, rounded | 6/10 |
1–3 poor · 4–5 fair · 6–7 good · 8–10 excellent. Pressure and wind are the NOAA National Weather Service hourly forecast for this spot; the level/flow trend is the latest 24 hours of readings on this page. Days 2–7 score sun, moon, forecast pressure and forecast wind only (level and water temperature aren’t forecast). Solunar times are a rule of thumb, not a guarantee.
Solunar periods calculated for 43.36, -115.45 (moon times from astronomical equations, Anderson Ranch Reservoir local time).
Weather & wind at Anderson Ranch Reservoir
air temperature, not water3-day forecast
- Today58° / 29°Partly Sunny then Chance Showers And ThunderstormsWind S 7 to 15 mphRain 53%
- Tuesday49° / 26°Partly SunnyWind WSW 3 to 8 mphRain 4%
- Wednesday53° / 28°SunnyWind SE 3 to 8 mphRain 0%
NOAA National Weather Service forecast for 43.360, -115.449 (grid BOI), issued Oct 26, 12:29 AM local time. High / low are air temperatures; water temperature is in the fishing section above. The “Air temp & weather” tile at the top refreshes live.
Nearby lakes & rivers
About this data
- Source
- U.S. Army Corps of Engineers — Anderson Ranch Dam nr Mtn Home
- Location
- 43.3598, -115.4493 · Idaho
- Measures
- Reservoir water-surface elevation, feet above sea level (NGVD29)
- Latest reading
- Oct 26, 2:00 AM local time
- History
- 1 days on file since 2026-10-26
- Page built
- Oct 26, 2026 12:50 PM ET
- Normal pool
- 4,194.00 ft — U.S. Army Corps of Engineers (Top of Normal)
- Storage
- 229,665 of 482,800 acre-ft (Top of Normal)
Source: U.S. Army Corps of Engineers (official page). Operator data is preliminary and may be revised. Weather: NOAA National Weather Service.