Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence

Journal of the American Water Resources Association
By: , and 

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Abstract

Regression models to predict baseflow alkalinity from basin hydrogeology were developed and verified for headwater streams on the Laurel Hill anticline in southwestern Pennsylvania. Predicted baseflow alkalinities were then used to estimate sensitivity to acidification and presence of trout (Salvelinus fontinalis) populations for 61 headwater streams. Sensitivity classifications were verified by surveying trout populations. Geologic variables relating to the carbonate rock burial depth, extent of carbonate rock recharge areas, and length of stream channel flowing through effluent carbonate rock outcrops were much more useful in predicting baseflow alkalinity than areal extent of carbonate rocks. Baseflow alkalinity was not well related to status of trout populations on these anticlinal basins, especially on noneffluent basins where bedrock dip exceeded surface slope.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Predicting baseflow alkalinity as an index to episodic stream acidification and fish presence
Series title Journal of the American Water Resources Association
DOI 10.1111/j.1752-1688.1987.tb00781.x
Volume 23
Issue 1
Year Published 1987
Language English
Publisher Wiley
Contributing office(s) Washington Water Science Center
Description 7 p.
First page 29
Last page 35
Online Only (Y/N) N
Additional Online Files (Y/N) N