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Figure 1. This BLM map depicts the principal meridians and baselines used for surveying states (colored) in the PLSS. The following are the principal and guide meridians and base lines of the United States, with the year established and a brief summary of what areas' land surveys are based on each.
Fort Cobb Reservoir has a total capacity of 143,740 acre-feet (177,300,000 m 3) and covers an area of 5,956 acres (24.10 km 2) at top of flood pool level. The uncontrolled morning-glory spillway in the left abutment consists of a concrete intake structure, concrete conduit, and concrete chute and stilling basin.
Image:Canada_blank_map.svg — Canada. File:Blank US Map (states only).svg — United States (including Alaska and Hawaii). Each state is its own vector image, meaning coloring states individually is very easy. File:Blank USA, w territories.svg – United States, including all major territories.
The term "United States," when used in the geographic sense, refers to the contiguous United States (sometimes referred to as the Lower 48, including the District of Columbia not as a state), Alaska, Hawaii, the five insular territories of Puerto Rico, Northern Mariana Islands, U.S. Virgin Islands, Guam, American Samoa, and minor outlying possessions. [1]
An orthographic projection of the United States. The following outline is provided as an overview of and topical guide to the United States: . United States of America – federal republic located primarily in North America, and the world's third-largest country by both land and total area.
Lake Sakakawea, Garrison Dam, and other dams and reservoirs of the Pick–Sloan Project, and affected Indian reservations. The reservoir was created by construction of Garrison Dam, part of a flood control and hydroelectric power generation project named the Pick–Sloan Project along the Missouri river.
English: A blank map of the United States, not including territories such as Puerto Rico and Guam. Uses the Albers projection.All paths of the states in the file have been assigned an ID consisting of their standard two-letter abbreviations in order to enable easy editing using a text editor.
Floods in the United States (2000–present) is a list of flood events which were of significant impact to the country during the 21st century, since 2000. Floods are generally caused by excessive rainfall, excessive snowmelt, storm surge from hurricanes , and dam failure.