Chemistry of a Near-Shore Lake Region during Spring Snowmelt

Chad P. Gubala, Charles T. Driscoll, Robert M. Newton, Carl L. Schofield

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The thermal and chemical characteristics of a spawning area within a base-neutralized lake were monitored through the spring snowmelt of 1989. While the greater part of the lake remained relatively neutral, severe pH (<5.0) and acid neutralizing capacity (ANC; <0 μequiv L-1) depressions were observed in the upper (1-1.5 m) portion of the water column. Thermal stratification of the near-shore area and a combination of groundwater and surface runoff events controlled the hydrologic response and the changes in water chemistry that occurred during the acid pulse. Dilution of basic cations (SBC) combined with NO3“ eluted from the snowpack and/or soils resulted in low ANC, low pH runoff affecting the near-shore area. Increases in monomeric Al and H+ were coincident with the ANC depression, creating a harmful environment for fish fry emerging from the spawning zone.

Original languageEnglish (US)
Pages (from-to)2024-2030
Number of pages7
JournalEnvironmental Science and Technology
Volume25
Issue number12
DOIs
StatePublished - Dec 1 1991

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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