SEASONAL VARIATION OF CHLORIDE INPUTS FROM ROAD SALT APPLICATION IN A MIXED URBAN/AGRICULTURAL WATERSHED IN CENTRAL ILLINOIS

2016 ◽  
Author(s):  
Lucas P. Chabela ◽  
◽  
Eric W. Peterson ◽  
Joseph Miller
Keyword(s):  
Seasonal Variation ◽  
Road Salt ◽  
Agricultural Watershed ◽  
Central Illinois

Nitrogen Mass Balance of a Tile-drained Agricultural Watershed in East-Central Illinois

2009 ◽  
Vol 38 (5) ◽  
pp. 1841-1847 ◽  
Author(s):  
Lowell E. Gentry ◽  
Mark B. David ◽  
Frederick E. Below ◽  
Todd V. Royer ◽  
Gregory F. McIsaac
Keyword(s):  
Mass Balance ◽  
Agricultural Watershed ◽  
East Central ◽  
Central Illinois

Seasonal Variation in Selected Nutrients of a River System

1970 ◽  
Vol 27 (5) ◽  
pp. 837-846 ◽  
Author(s):  
H. R. MacCrimmon ◽  
J. R. M. Kelso
Keyword(s):  
Carbon Dioxide ◽  
Seasonal Variation ◽  
Dissolved Oxygen ◽  
Water Chemistry ◽  
Water Samples ◽  
River System ◽  
Agricultural Watershed ◽  
Small City ◽  
Seasonal Patterns ◽  
Nitrate N

Water samples were collected biweekly from five locations on the Grand River, Ont., from August 16, 1967, to September 1, 1968. Headwater nutrient levels and associated water chemistry were radically altered by the influence of a small city. Processes of recovery occurred downriver in a primarily agricultural watershed. Levels of dissolved oxygen, carbon dioxide, pH, alkalinity, hardness, ammonia, nitrate, and silica followed similar seasonal patterns at all locations. High and widely fluctuating levels of chloride, ammonia, nitrate-N, nitrite, and orthophosphate were evidence of gross enrichment. Nitrate-N, orthophosphate, iron, and sulfate levels varied irregularly during the 13-month period.

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