Hydrology of area 57, Northern Great Plains and Rocky Mountain coal provinces, Utah and Arizona

Summary of the U.S. Geological Survey and U.S. Bureau of Land Management national coal-hydrology program, 1974-84

“…Types of ground-water data collected included well and spring discharges, chemical quality of the water, depths of ground-water levels, and, locally, aquifer characteristics. The ground-water sites are too numerous to be shown on the maps in this report; however, most of these sites are located on maps in the coal-area hydrology reports (Lines and others, 1984;Chancy and others, 1987;Price and others, 1987).…”

“…Some mines require continuous dewatering, and others discharge water intermittently (Lines and others, 1984). The possibility of a longer term, more severe issue, also in Utah, exists where dewatering an underground mine may induce the flow of more mineralized water into a fresh-water aquifer, and continued pumping may degrade the quality of water in the receiving streams (Price and others, 1987). Wherever mine dewatering occurs, flows of springs that are sources of domestic, stock, and wildlife water may be affected.…”

“…Relations for estimating peak flows in natural-flow perennial streams in the Colorado part of the regions are presented by McCain and Jarrett (1976). Equations to estimate the peak flow and the depth of and others (1984) and Price and others (1987).…”

“…These regression equations were developed for streams in zone A that derive flow primarily from snowmelt and streams in zone B that derive flow primarily from thunderstorms. Similar information and regression equations for estimating surface-water characteristics in coal area 57 also are available (Price and others, 1987).…”

“…The summary reports of the hydrology of coal area 56 (Lines and others, 1984), coal area 57 (Price and others, 1987), and coal area 58 (Chaney and others, 1987) were compiled largely from information given in the other reports cited in table 4. Those three summary reports are in a generally standard format.…”