Anderson Ranch Reservoir water level today
Reservoir in Elmore, Idaho · South Fork Boise River
4,150.41ft
1,265.04 m · NGVD29
Measured · provisional
Normal for the date
What this means
It is lower than on Oct 21 in 8 of the last 10 years.
The lake has fallen 0.45 ft in 7 days and fallen 2.01 ft in 30 days.
Since 1990, the lowest daily level was 4,000.00 ft (Oct 1996) and the highest 4,196.60 ft (Jun 1998).
Anderson Ranch Reservoir level chart
Loading chart…
Measured
Normal range for the date (middle 50% of past years)
Same date in past years
| Date | Level | vs today |
|---|---|---|
| Oct 21, 2025 | 4,153.44 ft | ▲ 3.03 ft |
| Oct 21, 2024 | 4,163.31 ft | ▲ 12.90 ft |
| Oct 21, 2023 | 4,181.40 ft | ▲ 30.99 ft |
| Oct 21, 2022 | 4,171.78 ft | ▲ 21.37 ft |
| Oct 21, 2021 | 4,119.61 ft | ▼ 30.80 ft |
| Oct 19, 2020 | 4,154.22 ft | ▲ 3.81 ft |
| Oct 21, 2019 | 4,164.72 ft | ▲ 14.31 ft |
| Oct 21, 2018 | 4,152.82 ft | ▲ 2.41 ft |
| Oct 21, 2017 | 4,170.17 ft | ▲ 19.76 ft |
| Oct 21, 2016 | 4,145.12 ft | ▼ 5.29 ft |
Records & details
- Highest
- 4,196.60 ft on Jun 6, 1998
- Lowest
- 4,000.00 ft on Oct 29, 1996
- Records from
- 1990 (37 years of daily data)
- Inflow
- 193 cfs (5.47 m³/s)
- Outflow
- 310 cfs (8.77 m³/s)
- Water temperature
- Not measured here
Weather & wind
This Afternoon71°F · Sunny
Wind SE 9 mph
Wind SE 9 mph
Tonight46°F · Partly Cloudy
Wind E 8 mph
Wind E 8 mph
Thursday68°F · Rain Showers
Wind ESE 6 to 16 mph
Wind ESE 6 to 16 mph
Thursday Night40°F · Showers And Thunderstorms
Wind SSW 1 to 10 mph
Wind SSW 1 to 10 mph
Friday48°F · Rain Showers
Wind WSW 7 to 15 mph
Wind WSW 7 to 15 mph
Friday Night28°F · Slight Chance Rain Showers then Partly Cloudy
Wind SW 2 to 14 mph
Wind SW 2 to 14 mph
NOAA National Weather Service forecast for this lake's location, updated 10 min ago.