CountiesSan Luis Obispo County
CaliforniaReservoirSan Luis Obispo County
Lake Nacimiento
Fed by the Nacimiento River, Lake Nacimiento holds roughly 5,400 acres of water in California. The lake is in San Luis Obispo County. Management is in the hands of Monterey County Water Resources Agency. The gauge last read 748.53 ft.
Water level today: 748.53 ft · see the full record
Coordinates35.7435, -120.9608
Surface area5,400 acres
RiverNacimiento River
Managed byMonterey County Water Resources Agency
Swimming beaches on Lake Nacimiento
No named swimming beach is mapped yet for this lake. Access is through agency day-use areas and boat ramps listed below. We add beach pages only when we can confirm a name, coordinates and an operating agency.
Lake Nacimiento on the map
Lake center, swimming spots and access points.
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
Water level today
Station 11149300, NACIMIENTO RES NR BRADLEY CA, publishes the water surface elevation used here. The last value stored here, 748.53 ft, is from 2026-09-09. Beach width and ramp access both move with the pool, so the number above is worth a look first.
748.53 ft trend not available
Lake Nacimiento explained
Lake Nacimiento sits at 35.7435, -120.9608. Releases go downstream into the Nacimiento River.
Station 11149300, NACIMIENTO RES NR BRADLEY CA, publishes the water surface elevation used here. The last value stored here, 748.53 ft, is from 2026-09-09. Beach width and ramp access both move with the pool, so the number above is worth a look first.
The closest lakes in this guide are Lake San Antonio (California, 7 mi), Lopez Lake (California, 47 mi) and Los Banos Reservoir (California, 86 mi). In all, 86 lakes in California are covered here.
Algae blooms are seasonal and local: look for posted signs at the ramp or park entrance. Season dates vary by park; the operating agency publishes them each spring. There is no water temperature sensor here, so only air conditions are shown.
Shoreline access on lakes like this one is often informal and unsigned. There is no beach on record at Lake Nacimiento in the datasets this guide reads.
Questions about Lake Nacimiento
Is there a beach at Lake Nacimiento?
No named swimming beach appears in the federal and state datasets this guide reads. Check the operating agency for day-use areas on the ground.
How big is Lake Nacimiento?
About 5,400 acres.
What other lakes are near Lake Nacimiento?
The closest in this guide is Lake San Antonio, about 7 miles away in California.
Lakes near Lake Nacimiento
Other lakes in this guide, ordered by distance.
Lopez Lake
Lopez Lake is a 974-acre reservoir on the Arroyo Grande Creek in California. Its shoreline falls inside San Luis Obispo County.…
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San Luis Reservoir
San Luis Reservoir is a reservoir of some 12,700 acres on the California Aqueduct, in California. It lies in Merced County. It is…
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Lake Cachuma
Lake Cachuma covers about 3,100 acres of the Santa Ynez River in California. It lies in Santa Barbara County. Management is in…
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Millerton Lake
Millerton Lake is a 4,900-acre reservoir on the Friant-Kern Canal Madera Canal San Joaquin River in California. You will find it…
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Pine Flat Lake
Pine Flat Lake is a 5,970-acre reservoir on the Kings River in California. Its shoreline falls inside Fresno County. Management…
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Lake Casitas
Lake Casitas covers about 1,100 acres of the Coyote Creek in California. Its shoreline falls inside Ventura County. It is managed…
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Sources
Every figure on this page comes from one of these public sources.