Preliminary Water-Table Map and Water-Quality Data for Part of the Matanuska-Susitna Valley, Alaska, 2005

Shallow groundwater in the Matanuska-Susitna Valley, Alaska—Conceptualization and simulation of flow

“…At Memory Lake, the groundwater from two wells downgradient from the lake is isotopically enriched relative to mean regional groundwater values, indicating leakage from the lake into the underlying aquifer. This is corroborated by similar major ion chemistry (Moran and Solin, 2006). In the area surrounding Seymour Lake, however, the isotopic composition of groundwater differed from the isotopic composition of nearby lakes.…”

“…The relation between shallow groundwater in the wetlands surrounding Big Lake and the regional groundwater flow system has not been clearly established. Moran and Solin (2006) compiled water levels in nearly 800 wells penetrating unconfined aquifers and used those levels to construct a contour map of water-table altitude in the core area. The configuration of the water table was similar to that described by Jokela and others (1990).…”

“…The configuration of the water table was similar to that described by Jokela and others (1990). On the basis of the apparent water-table surface and similarities and the geochemical and isotopic composition of surface water and groundwater, Moran and Solin (2006) also identified locations of potentially substantial groundwater/surface-water interaction. Geochemical and isotopic data for groundwater throughout Upper Cook Inlet Basin were also collected and compiled by Glass (2001).…”

“…Data on the isotopic composition of surface water and groundwater in the study area are available from several sources. Glass (2001) and Moran and Solin (2006) published analyses of surface-water and groundwater samples for deuterium:protium ( 2 H: 1 H) and oxygen-18:oxygen-16 ( 18 O: 16 O) isotopic ratios. In addition, event precipitation samples were collected at the Tideview station in Anchorage from 2007 to 2010, and monthly composite rain samples were collected at the MAES weather station during April-November in 2010 and 2011.…”

Planning for climate change impacts on hydropower in the Far North

“…The shortcomings in estimates of ET and precipitation have already been discussed. Very little is known or understood about groundwater in the Far North, or how it might be changing because observations are so sparse (Bense et al, 2009;Moran and Solin, 2006). There are considerable unknowns about the timing of glacial retreat, thawing of permafrost, and change in subsurface storage of water (Walsh et al, 2014;Murray et al, 2010).…”