Largest lakes & reservoirs in Inland Empire Region, CA by water volume
The estimated volume of water that a lake contains is measured at the lake’s normal elevation. By this measure, the world’s largest freshwater lake is Siberia’s Lake Baikal.Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet. 1 acre-foot is equal to 325,851 US gallons. Siberia’s Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater – nearly 1 million gallons for every living person on earth.
The other – and more widely used – measure of a lake’s size is the lake’s surface acreage. By that measure, the world’s largest freshwater lake is North America’s Lake Superior.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
You can find many of the the world’s largest lakes (by water volume) on LakeLubbers. Note: For some lakes, the water volume data is unknown or does not apply, so you may see fewer lakes than the total 7 articles we have published for Inland Empire Region, CA lakes.
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Below are lakes within USA > US West Region > California > Inland Empire Region, CA > Compared by water volume. This list does not represent all lakes in Inland Empire Region, CA, only the 7 Inland Empire Region, CA lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Diamond Valley Lake, CA (California, Inland Empire Region, CA, US West Region, USA) |
800,000 ac-ft | (Also known as Diamond Valley Reservoir) Diamond Valley Lake lies between two mountains in California’s Inland Empire tourism region. The 4,500-acre lake is Southern California’s newest and l… |
| Big Bear Lake, CA (California, Inland Empire Region, CA, US West Region, USA) |
73,370 ac-ft | Located just 100 miles from Los Angeles but wrapped in an entirely different environment, Big Bear Lake is both convenient and escapist. Surrounded by… |
| Silverwood Lake, CA (California, Inland Empire Region, CA, US West Region, USA) |
73,000 ac-ft | (Also known as Lake Silverwood) Rimmed with live oak, manzanita, and mountain mahogany and set against the backdrop of the snow-capped San Bernardino Mountains, Silverwood Lake is an… |
| Lake Arrowhead, CA (California, Inland Empire Region, CA, US West Region, USA) |
47,418 ac-ft | (Also known as Little Bear Lake) In 1891 a group of Ohio businessmen formed a company to construct a reservoir to provide water to irrigate the southern California lowlands. Lake Arro… |
| Lake Elsinore, CA (California, Inland Empire Region, CA, US West Region, USA) |
30,000 ac-ft | Cradled at the foot of the Ortega Mountains and at the entrance to the Cleveland National Forest, Lake Elsinore enjoys an ideal location. At about 3,3… |
| Lake Hemet (California, Inland Empire Region, CA, US West Region, USA) |
14,000 ac-ft | (Also known as Lake Hemet Reservoir) Not far from the famed San Jacinto Peak in California’s Inland Empire, Lake Hemet Reservoir offers plenty of nature-focused recreation to lucky visito… |
| Lake Gregory, CA (California, Inland Empire Region, CA, US West Region, USA) |
500 ac-ft | (Also known as Lake Gregory Regional Park) Lake Gregory is a recreational retreat situated almost 5,000 feet above sea level in the San Bernardino Mountains of Southern California. Surrounded b… |