Water supply at Los Alamos during 1996. Progress report

Abstract

I ICover illustration: The graph illustrates the changes in water levels observed in the test welki in the main aquifer of the Los Alamos area. These changes indicate declines of as much as 35 feet. Water level changes in pumping well fields are discussed in Section V of this report. An Afirmative Acfion/Equal Opportunity Employer

Analyses of the PM-2 Aquifer Test Using Multiple Observation Wells

“…Figure 31 shows the combined monthly water production pattern during 2003 for all wells in Los Alamos County. With some minor variations, this seasonal pattern is fairly typical of the water supply system (e.g., Purtymun and Stoker 1988;McLin et al 1998;Koch and Rogers 2003). During 2003, average monthly production was lowest during January at about 91 million gallons (or about 2.9 million gallons per day [mgpd]).…”

Water Supply at Los Alamos 1998-2001

“…Surface water has historically been collected from reservoirs in Guaje and Los Alamos Canyons, and from the Water Canyon spring gallery (e.g., McLin et al 1998). However, surface water has not been used from Guaje reservoir since 1991 or from the Water Canyon gallery since 1995.…”

“…Previous water supply reports estimated LANL water consumption to be 30% of the total water production (McLin et al 1998 …”

“…Additional information about the Water Canyon gallery was provided in earlier water supply reports (see Appendix A). The historical water production data from the Water Canyon gallery are provided by McLin et al (1998).…”

Water Supply at Los Alamos during 1997

“…The levels in the Los Alamos well field (see Fig. 5 in [27]) generally ranged from about40 to 140 ft below initial levels until 1992 when the well field was taken out ofproduction. Since then, levels have trended back toward conditions similar to those recorded at the time the wells were first drilled.…”