Premium
Importance of groundwater sulfate to acidification in the Goose River watershed, Maine
Author(s) -
Sidle William C.,
Allen Derrick
Publication year - 2004
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/2004wr003101
Subject(s) - groundwater , sulfate , hydrology (agriculture) , bedrock , deposition (geology) , watershed , surface water , environmental science , drainage basin , goose , geology , streams , structural basin , geomorphology , environmental engineering , geography , chemistry , paleontology , computer network , geotechnical engineering , cartography , organic chemistry , machine learning , computer science
The role of groundwater sulfate discharge to ponds and streams within the Goose River basin (33.3 km 2 ) is examined. While airborne sulfate deposition has declined, acidity in surface waters locally remains elevated. Monthly SO 4 2− analyses (1999–2002) of wet deposition and surface waters are reported, and a sulfate budget for six catchments of the Goose River watershed, Maine is calculated. Groundwater values from different bedrock types are beneficial in identifying groundwater source(s) of sulfate in surface waters and discriminating them from atmospheric sulfate deposition. The variability of proposed sulfide oxidation among certain local chalcophile rocks and the depth of aeration in these sheared granitoids are elucidated from and data. Cosmogenic residence times estimate new atmospheric SO 4 2− deposition in the catchments and production of SO 4 2− from water‐rock interactions among some fractured granitoids.