NDLI: Effect if reduced salinity input on river stratification and dissolved oxygen

Content Provider	Springer Nature Link
Author	Effler, Steven W. Doerr, Susan M. Owens, Emmet M.
Copyright Year	1997
Abstract	Changes in the occurrence, character, and longitudinal extent of salinity (S) stratification, and related impacts on dissolved oxygen (DO), in the Seneca and Oswego Rivers, NY, in response to the abatement of ionic pollution of inflowing Onondaga Lake, is documented. The analysis is based on vertical profiles of specific conductance and DO collected over a 20 km reach of the river system for several years before and after the closure of the source of the ionic pollution, a soda ash manufacturing facility. TheS difference between the lake and the Seneca River decreased from about 2.6 to 0.7 parts per thousand (%.) following the closure; more than 50% of the continuing difference is associated with lingering ionic waste loading from soda ash production. The occurrence and longitudinal range of theS stratification phenomenon was, and continues to be, highly dependent on river flow. It is most strongly manifested when river flow is low. The occurrence, magnitude, and longtitudinal extent ofS stratification have decreased, and vertical exchange between the stratified layers has increased, since the closure, thereby ameliorating the coupled negative impact on the river's oxygen resources. However, under low flow conditions (e.g., probability of occurrence equal to 15%)S stratification continues to extent > 2 km upstream and > 8 km downstream of the point of entry of Onondaga Lake into the Seneca River. Severe DO depletion in the lowel river layer, representing violations of New York water quality standards, continues to occur where S stratification prevails. Elimination of the continuing ionic waste inputs from soda ash production would further limit the stratification phenomenon and improve the river's DO problem.
Starting Page	45
Ending Page	58
Page Count	14
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	95
Issue Number	1-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1997-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	salinity stratification oxygen depletion ionic waste river Hydrogeology Environment Atmospheric Protection/Air Quality Control/Air Pollution Terrestrial Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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