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This is a list of Superfund sites in Arizona designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up ...
Arizona is also one of the Four Corners states and is diagonally adjacent to Colorado. Arizona has a total area of 113,998 square miles (295,253 km 2), making it the sixth largest U.S. state. [1] Of this area, just 0.3% consists of water, which makes Arizona the state with the second lowest percentage of water area (New Mexico is the lowest at ...
In the Arizona ecoregion section, the Arizona transition zone is the major section of the EPA designated, Level III ecoregion, Arizona/New Mexico Mountains ecoregion. The other two outlier subregions to the transition zone in Arizona, are the Kaibab Plateau of the North Rim of the Grand Canyon , and associated ranges of the Chuska Mountains ...
Rio Rico is located in Santa Cruz County, north of Nogales at the confluence of Sonoita Creek and the Santa Cruz River. [8] According to the United States Census Bureau, the community has a total area of 62.3 square miles (161.2 km 2), all land. [9] Rio Rico includes the site of the ghost town of Calabasas, Arizona.
The river begins below the dam at Sullivan Lake, fed by Big Chino Wash and Williamson Valley Wash in Yavapai County.The Verde flows freely for 125 miles (201 km) through private, state, tribal and United States Forest Service lands, [5] specifically the Prescott National Forest, Coconino National Forest and Tonto National Forest, before encountering the first of two dams that make Horseshoe ...
Whitewater Draw: originally considered the upper reach of the Rio de Agua Prieta, it enters Mexico as the head of Rio de Agua Prieta, which runs southward then southeast to join the Rio de San Bernardino, at La Junta de los Rios, Sonora, about 24.5 miles southeast of Douglas, Arizona.
Sites marked where persons perished crossing la Frontera from Mexico, North up San Pedro River. The San Pedro Valley is a site for Holocene mammal fossils because of the riparian environment. In recent decades, the Arizona Geological Society has focused on the region, as well as researchers. Development pressures, recreation, and groundwater ...
Marana (/ m ə ˈ r æ. n ə /) is a town that mostly lies in Pima County with a small portion in Pinal County, in the U.S. state of Arizona. [3] [4] It is located northwest of Tucson, Arizona. As of the 2020 census, the population of the town was 51,908. [5]