We studied how the extensive diversion of Colorado River water, induced by dams and agricultural activities of the last 70 years, affected the growth rates of two abundant bivalve mollusk species (Chione cortezi and Chione fluctifraga) in the northern Gulf of California. Shells alive on the delta today ( Post-dam shells) grow 5.8–27.9% faster than shells alive prior to the construction of dams ...

Diversion of river water has diminished freshwater flow into many estuaries worldwide, yet the effects of these diversions on marine fisheries, many of which depend on estuaries, are largely unexplored. We document the impact of diverting Colorado River flow from the Gulf of California on the life history of a now-endangered marine fish (Totoaba macdonaldi, Sciaenidae). Growth increments in pre...

The U.S. Army Corps of Engineers elevated Zoar Levee and Diversion Dam to a Dam Safety Action Class I (urgent and compelling) ranking due to seepage concerns. An accelerated program is in progress to address project deficiencies which include seepage through the levee’s glacial outwash foundation, through a fractured rock knoll beneath the levee, and through the dam’s fractured rock abutments a...

Wild riverine fishes are known to rely on burst swimming to traverse hydraulically challenging reaches, and yet there has been little investigation as to whether swimming anaerobically in areas of high flow can lead to delayed mortality. Using acoustic accelerometer transmitters, we estimated the anaerobic activity of anadromous adult sockeye salmon (Oncorhynchus nerka) in the tailrace of a div...

The objective of this study is to use two hydrological indices (coefficients variation and immoderation) analyze the impacts dam management methods on seasonal daily flow rate change downstream three dams: Manouane (diversion-type method), Ouareau (natural-type method) Matawin (inversion-type method). results show that far greater (characterized by an inversion-type than other dams. Moreover, d...

In this study, the spatial and temporal variability of water quality including monthly series of TDS, EC, So4, Cl, Ca and Na in common statistical period 1993-2014 was evaluated for the Karun River. This assessment is based on qualitative data stations including Susan in the upstream of Gotvand reservoir, Gotvand, Mollasani and Ahvaz in the downstream. To determine the parameters trend process,...

Causes of nonregenerative anemia may be categorized by a mnemonic using the letter D: Detection, Delay, Destruction, Deficiency, Deep-Development-Dam, Diversion, Displacement, Depression, Dilution and Drugs. The categories are not mutually exclusive and anemia may be multifactorial in etiology. A pathophysiologic mechanism common to many of the causes is defective development of erythroid cells...