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Effects of basin size on low-flow stream chemistry and subsurface contact time in the neversink river watershed, New York

January 1, 1997

The effects of basin size on low-flow stream chemistry and subsurface contact time were examined for a part of the Neversink River watershed in southern New York State. Acid neutralizing capacity (ANC), the sum of base cation concentrations (SBC), pH and concentrations of total aluminum (Al), dissolved organic carbon (DOC) and silicon (Si) were measured during low stream flow at the outlets of nested basins ranging in size from 0.2 to 166.3 km2. ANC, SBC, pH, Al and DOC showed pronounced changes as basin size increased from 0.2 to 3 km2, but relatively small variations were observed as basin size increased beyond 3 km2. An index of subsurface contact time computed from basin topography and soil hydraulic conductivity also showed pronounced changes as basin size increased from 0.2 to 3 km2 and smaller changes as basin size increased beyond 3 km2. These results suggest that basin size affects low-flow stream chemistry because of the effects of basin size on subsurface contact time. ?? 1997 by John Wiley & Sons, Ltd.

Citation Information

Publication Year 1997
Title Effects of basin size on low-flow stream chemistry and subsurface contact time in the neversink river watershed, New York
DOI
Authors D.M. Wolock, J. Fan, G. B. Lawrence
Publication Type Article
Publication Subtype Journal Article
Series Title Hydrological Processes
Series Number
Index ID 70019769
Record Source USGS Publications Warehouse
USGS Organization