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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 ...
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.
Since water, needed for refinement of ore, was not present near the mine, a mill was established 4 miles (6.4 km) away on the west bank of the San Pedro River, in a town that came to be known as Mammoth, after the mine and the mill. The ore was hauled to the mill by way of mule teams, until just after the start of the 20th century when an ...
Not only do conifer trees thrive in acidic soils, they actually make the soil more acidic. Acidic leaflitter (or needles) from conifers falls to the forest floor and the precipitation leaches the acids down into the soil. Other species that can tolerate the acidic soils of the taiga are lichens and mosses, yellow nutsedge, and water horsetail.
The Arizona Game and Fish Department lists the lowland leopard frog as a species of special concern. [77] Urban sprawl, air and water pollution, noise, light pollution, and a range of habitat restricted by human infrastructure put stress on the park's mammals and other animals, but the most serious immediate threat to them is roadkill.
The Arizona mountain lion can be found in habitats all across the state. The video shows a thirsty mountain lion getting a good long drink. It returns to the pool after dark, this time with a friend.
The ecosystem within the Bill Williams River National Wildlife Refuge is situated in an ecotone (transition zone) between Mojave Desert and Sonoran Desert ecoregions, increasing diversity of plant species present within it, There are few places in the Arizona deserts where one can view saguaro cacti forests, wetland broadleaf cattail (Typha latifolia) stands, and cottonwood woodlands in a ...
Because of its arid climate and large population, water is critically important in the state of Arizona. Most drinking water is drawn from surface water sources, including Bureau of Reclamation dams and the Central Arizona Project diversion. Much of this surface water is from the Colorado River. Groundwater serves to augment surface water.