Monterey County, Central California

Lake San Antonio

Lake San Antonio

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Lake San Antonio

Lake San Antonio draws boaters, waterskiers, campers, and anglers. The 17-mile lake offers hundreds of campsites, miles of horseback riding and mountain biking trails, and a dazzling array of springtime wildflowers. Bald eagles nest in the area while deer and other wildlife roam the surrounding hills.

Located 25 miles inland on California's central coast area, Lake San Antonio is only 30 miles from Paso Robles and 7 miles from Lake Nacimiento.

Lake San Antnio Operations for 2018

Lake San Antonio North and South shore will be open at 8:00 AM on Thursday, March 29, 2018 and close on Sunday following Easter by 12:00 PM, April 9, 2018.

After Easter week and until the Thursday before Memorial Day, the south shore of the lake will be open on Fridays at 6:00 AM through Sundays at 6:00 PM.

After the Thursday before Memorial Day, expect that the south shore will be open 7 days a week.

The north shore will open for the season at 7:00 AM on June 8, 2018. It is best to check Monterey Co. Parks - Lake San Antonio website for the most up-to-date campground information.


Lake San Antonio offers all kinds of boating from houseboats to sailing, from jet skis to water skiing. The long narrow configuration of the lake along with few inlets makes San Antonio less attractive to pleasure boaters as some other nearby lakes. Several launch ramps around the lake make it easy to get on the water.


Lake San Antonio has one marina with limited boat rentals. The marina provides a variety of services including fuel, towing, minor repairs, and boat storage. A cafe and store are located near the marina. Friendly people there are ready to help you and answer questions.


Anglers at Lake San Antonio is great for striped bass. Some trophy stripers have been pulled from the lake. An abundance of structures provide plenty of good habitat for smallmouth and largemouth bass. The usual bluegills, catfish, and sunfish are also found here.


Lake San Antonio has hundreds of campsites. Many are located in three well organized campgrounds on the South Shore, while others are found along the shoreline on the northeast side of the lake. Most are first come, first served, but a few may be reserved. A good number of sites have RV hook-ups. Showers and restrooms are found in all the campgrounds. Group campsites are also available. Outside the lake area, few campsites can be found except at several RV Parks.


Lake San Antonio has a few cabins for rent. They offer basic necessities. Outside the lake lodging is very limited. You have to head south to Paso Robles or even San Luis Obispo to find a good selection of hotels and motels.


In the springtime the hills around Lake San Antonio come alive with wildflowers. By early summer the hills dry to a golden color. Oak trees are scattered about the slopes. Only a few inlets offer variety to the long, narrow shape of the lake.

Nearby Communities

Lake San Antonio is about 30 miles northwest of Paso Robles. Almost any service or supply needed can be found there. Fifty-five miles south of the lake is San Luis Obispo and beyond that the coastal towns of Pismo Beach and Grover City.

Nearby Beaches

Within easy driving distance of Lake San Antonio are all the great beaches along the San Luis Obispo Coast:
Pismo Beach, Morro Bay, Oceano State SVRA, Avila Beach, Cayucos Beach, Moonstone Beach, San Simeon Beach, and many more. Find them all at California's Best Beaches

Lake San Antonio Facts
Lake Size: 5,720 surface acres
Maximum Depth: about 210 feet
Length: 17 miles
Shoreline: 64 miles
Dam Construction: 1965
Reservoir Manager: Monterey County Water Authority
Maximum Lake Elevation: 779 feet
Average High Air Temperatures
  spring: 78 degrees
  summer: 92 degrees
  fall: 85 degrees
  winter: 61 degrees
Summer Surface Water Temperature: 72 degrees

California's Greatest Lakes

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