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San Joaquin soil landscape. San Joaquin is an officially designated state insignia, the state soil of the U.S. state of California. The California Central Valley has more than 500,000 acres (2,000 km 2) of San Joaquin soils, named for the south end of that valley. This series is the oldest continuously recognized soil series within the state.
The Unified Soil Classification System (USCS) is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. Each letter is described below (with the exception of Pt): If the ...
Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity. There are generally a high concentration of roots in topsoil since this is where plants obtain most of their vital nutrients.
The Storie index is a method of soil rating based on soil characteristics that govern the land's potential use and productivity capacity.Developed by R. Earl Storie at University of California, Berkeley in the 1930s as a method of land valuation, it is independent of other physical or economic factors that might determine the desirability of growing certain plants in a given location.
Largest lakes. In terms of area covered, the largest lake in California is the Salton Sea, a lake formed in 1905 which is now saline. It occupies 376 square miles (970 km 2) in the southeast corner of the state, but because it is shallow it only holds about 7.5 million acre⋅ft (2.4 trillion US gal; 9.3 trillion L) of water. [2]
Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore wind farms, offshore oil exploration and drilling and related activities. Surveys may also be conducted to determine the route of subsea cables such as telecommunications cables, cables ...
USS Yancey (AKA-93/LKA-93) was an Andromeda-class attack cargo ship built by the Moore Dry Dock Company of Oakland, California for the United States Navy during World War II. The ship was named in honor of Yancey County, North Carolina. Yancey ' s keel was laid in May 1944, and the ship was launched in July, and commissioned in October.
The seamount that San Francisco struck did not appear on the chart in use at the time of the accident, but other charts available for use indicated an area of "discolored water", an indication of the probable presence of a seamount. The Navy determined that information regarding the seamount should have been transferred to the charts in use ...