Reservoir Levels Weather Hydrology

Whale Rock is a natural landmark located in San Luis Obispo County, California. The rock is a volcanic plug that rose from the ocean floor over 25 million years ago. It is approximately 361 feet tall and dominates the landscape of the nearby town of Cayucos. The hydrology of the area is determined by the Whale Rock Reservoir, which is located just west of the rock. The reservoir provides surface water flow to the area through the Los Osos Creek watershed. The water in the reservoir comes from a combination of surface flow and snowpack melt from the surrounding mountains. The water from the reservoir is used for agricultural purposes in the surrounding area. Recreational activities, such as hiking and fishing, are also popular in the area.

July 21, 2024







24hr Change None%
Percent of Normal None%
Dam_Height 193
Hydraulic_Height 176
Drainage_Area 20.8
Year_Completed 1960
Nid_Storage 40662
River_Or_Stream Old Creek
Surface_Area 594
Hazard_Potential High
Dam_Length 850
Primary_Dam_Type Earth
Nid_Height 193

Regional Streamflow


Cubic Feet Per Second


Cubic Feet Per Second


Cubic Feet Per Second


Cubic Feet Per Second

Explore the Interactive Map

View recreational hotspots like fishing, camping, and parks, alongside climate-related data such as river levels, snowpack, and weather forecasts. Enjoy 3D mapping for an immersive experience, and switch to satellite view for a detailed look at your favorite spots. Simply click, explore, and discover nature like never before!

5-Day Weather Forecast

16-Day Weather Forecast

Explore Nearby Places

Floyd Rice Park

Floyd Rice Park is a beautiful park located in the state of California, USA. This park is known for its stunning natural beauty, numerous recreational activities, and historic significance. It is a popular destination for tourists seeking peaceful surroundings, hiking, fishing, and picnicking. Floyd Rice Park has several points of interest that visitors should see, including the pristine lake, the historic bridge, and the beautiful hiking trails. The park also has a large campground, a playground for children, and picnic areas for families and groups. One of the interesting facts about Floyd Rice Park is that it was once a ...