IdahoReservoirAda County

Lucky Peak Lake

Fed by the Boise River, Lucky Peak Lake holds roughly 2,820 acres of water in Idaho. It lies in Ada County. Management is in the hands of USACE Walla Walla District. The gauge last read 2,991.67 ft.

Photo: Karthikc123 · CC BY-SA 3.0 · Wikimedia Commons

CountiesAda County

Coordinates43.5253, -116.0430

Surface area2,820 acres

RiverBoise River

Managed byUSACE Walla Walla District

Swimming beaches on Lucky Peak Lake

1 named swimming spot and shoreline access points, from USGS GNIS, Recreation.gov and the Forest Service. None is staffed by a lifeguard unless the operating agency posts one.

Lucky Peak Lake

Sandy Point Beach

Ada County; 0.8 mi from the lake center.

USGS GNISSwimming

Lucky Peak Lake on the map

Lake center, swimming spots and access points.

Get directions

Weather and water temperature

Air temperature and wind from Open-Meteo. Water temperature only when the lake has a public sensor.

Weather data by Open-Meteo

A closer look at Lucky Peak Lake

On the map, Lucky Peak Lake is centered near 43.5253, -116.0430. Releases go downstream into the Boise River. Surface elevation is about 3,050 feet.

Station 13201500, LUCKY PEAK LAKE NR BOISE ID, publishes the water surface elevation used here. The last value stored here, 2,991.67 ft, is from 2026-09-09. Check the reading the morning you go if your plan depends on a specific ramp.

Season dates vary by park; the operating agency publishes them each spring. Water temperature is not measured at this lake by any public agency we read. Freshwater advisories are issued locally, so check the state health department before you swim.

If Lucky Peak Lake is busy, the nearest alternatives here are Arrowrock Reservoir (Idaho, 12 mi), Lake Lowell (Idaho, 32 mi) and Anderson Ranch Reservoir (Idaho, 35 mi). In all, 26 lakes in Idaho are covered here.

Public access at Lucky Peak Lake covers 1 named swimming spot and 1 public recreation area. They include Sandy Point Beach. These come from USGS GNIS. Recreation areas nearby include Sandy Point Bike Path / Trail. Facilities vary from one access point to the next, so check before you rely on one.

Recreation areas on Lucky Peak Lake

1 public recreation areas mapped around the lake by the U.S. Army Corps of Engineers. Facilities vary by area; check the managing office for opening dates and fees.

Sandy Point Bike Path / Trail

Source: USACE Recreation Areas

Questions about Lucky Peak Lake

What is the current water level at Lucky Peak Lake?

The latest reading is 2,991.67 ft, from USGS gauge 13201500.

Can you swim in Lucky Peak Lake?

Yes. This guide maps 1 named swimming spot around the lake, including Sandy Point Beach. None is staffed by a lifeguard unless the operating agency posts one.

How big is Lucky Peak Lake?

About 2,820 acres.

What other lakes are near Lucky Peak Lake?

The closest in this guide is Arrowrock Reservoir, about 12 miles away in Idaho.