River Colorado

Another groundwater contaminant that can be removed by reduction reactions is perchlorate. Ammonium perchlorate is a solid rocket fuel, and wastes from its manufacturing have contaminated some irrigation and drinking water sources, among them the lower Colorado River in the American Southwest. Elevated perchlorate levels have been linked to human health effects, and because perchlorate has been found in vegetable crops such as lettuce, there is concern that this contamination could have serious consequences. 

Stanford JA, Ward JV (1986) The Colorado River System. In Davies BR, Walker KF (eds) The ecology of river systems. Dr. Junk Publishers, Dordrecht, p 793... 

Silver is usually found in extremely low concentrations in natural waters because of its low crustal abundance and low mobility in water (USEPA 1980). One of the highest silver concentrations recorded in freshwater (38 pg/L) occurred in the Colorado River at Loma, Colorado, downstream of an abandoned gold-copper-silver mine, an oil shale extraction plant, a gasoline and coke refinery, and a uranium processing facility (USEPA 1980). The maximum recorded value of silver in tapwater in the United States was 26 pg/L — significantly higher than finished water from the treatment plant (maximum of 5.0 pg/L) — because of the use of tin-silver solders for joining copper pipes in the home, office, or factory (USEPA 1980). 

Rusk, M.K. 1991. Selenium Risk to Yuma Clapper Rails and Other Marsh Birds of the Lower Colorado River. M.S. thesis, Univ. Arizona. 75 pp. 

The relationships developed from field measurements have been made dimensionless with the assumptions that v = 1.33 x 10 m /s and AijO = 2.6 x 10 m /s to facilitate comparisons between relations and avoid dimensional problems. They are given in Table 9.2. The early measurements were to investigate the loss of water from the reservoirs of the Colorado River in the United States, and the later measurements were designed to investigate heat loss from heated water bodies. A revelation occurred in 1969, when Shulyakovskyi brought in buoyancy forces as related to natural convection to explain the heat loss from heated water at low wind velocities. This was picked up by Ryan and Harleman (1973), who realized that natural convection could explain the need for a constant term in front of the relationship for gas film coefficient, as had been found by Brady et al. (1969), Kohler (1954), Rymsha and Dochenko (1958), and Shulyakovskyi (1969). Finally, Adams et al. (1990) rectified... 

There are a couple more entries for 5-MeO-DMT, one very important one, and the other quite trivial. There is a drug-use phenomenon that is often referred to by the popular title of "toadlicking." The toad involved is the Sonora Desert Toad, also called the Colorado River Toad, and carries the binomial Bufo alverius. It is not the closely related marine toad Bufo marinus, as... 

But how, exactly, does a toad secretion effect the human mind Bufotenin has a very close chemical similarity to serotonin, a substance used by the nervous system to transmit information from one nerve cell to another. Bufotenin overwhelms serotonin-sensitive cells and triggers effects ranging from hallucinations to seizures. Two Toronto men learned about this the hard way. They ended up in hospital after licking a cane toad they had purchased in a pet shop specializing in exotic animals. And a five-year-old Arizona boy did have a brush with death after he put a Colorado River toad into his mouth. (Just why he did this can only be explained by other five-year-old boys.) In any case, this species, bufo alvarias, is the most toxic toad in North America. The youngster developed seizures that had to be controlled with medication. 

Bonanza Road Victorville. CA 92392 (619) 241-6583 COLORADO RIVER BASIN REGION (7)... 

Estimated cost and C02 emissions for building 1.3-GW (gigawatt) power plants in 2000 and operating them tor 20 years. [Data from s. Pacca and A. Horvath, Greenhouse Gas Emissions from Building and Operating Electric Power Plants in the Upper Colorado River Basin, Environ. Sc/. Technol. 2002f 36,3194.]... 

Layers of rock exposed in the Grand Canyon by the erosive action of the Colorado River provide a window on a billion years Of Earth s history. /From J. Grotzinger. T. H. Jordan, F Press, and R. Siever, Understanding Earth. 5th ed. (New York ... 

The Colorado River in Colorado has a salinity of about 50 ppm. By the time this water passes into Mexico, its salinity has increased to about 1000 ppm. About how many milligrams of salts have been added to each liter of water over the course of the waters journey from Colorado to Mexico ... 

Legal Aspects of Salinity Caused by Cooling Towers. .. The Colorado River... 

Long ago, Southern California outgrew its local supplies and had to reach 240 miles across deserts and mountains to the Colorado River for its water supplies. This project, once criticized as a wasteful overdevelopment, will soon be inadequate. In the 1960... 

Upper Colorado River Basin Colorado USA 37 streambed sediment samples (8 from nonmined areas) USA Alabama northern impacted by acid mine drainage 25 sites USA Alaska Cook Inlet Basin streams 47 sites USA Black Hills Spearfish, Whitewood, and Bear Butte creeks watersheds USA (conterminous) (541 stream bed samples)... 

Deacon, J.R. and Driver, N.E. (1999) Distribution of trace elements in streambed sediment associated with mining activities in the Upper Colorado River Basin, Colorado, USA, 1995-96. Archives of Environmental Contamination and Toxicology, 37(1), 7-18. 

Colorado Upper Colorado River Basin Ore deposits and mining wastes Deacon and Driver (1999)... 

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