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Nutrient survey of surface waters in southern Florida during a wet and a dry season, September 1970 and March 1971

Open-File Report 72-124

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Abstract

A mass nutrient survey of southern Florida surface waters was made in September 1970, during a period of generally high water, and again in March 1971, during a period of low water. Water samples were analyzed by automated chemical techniques for total ortho plus acid-hydrolyzable phosphorus (P-P04), ammonia nitrogen (NH3-N), nitrate nitrogen (N02-N), and nitrate nitrogen (N03-N). Phosphorus (P-P04) concentration averaged about 0.50 mg/l (milligram per liter) during the wet season; the average concentration was slightly higher during the dry season. At many sites sampled during the wet and dry seasons, less that 0.01 mg/l of phosphorus was found. At one site in Broward County near a point of sewage outfall, the concentration was 45 mg/l during the dry season. Ammonia was the most prevalent form of nitrogen detected. Concentrations of NH3-N ranged from less than 0.01 to 14 mg/l in the wet season and from less that 0.01 to 25 mg/l in the dry season. Throughout the study area, nitrite and nitrate concentrations were generally low in both wet and dry seasons. Nitrite ranged from less than 0.01 to 0.70 mg/l N02-N during the wet season and slightly lower in the dry season. Most nitrate concentrations were below 0.20 mg/l N03-N during the wet and dry seasons.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Nutrient survey of surface waters in southern Florida during a wet and a dry season, September 1970 and March 1971
Series title:
Open-File Report
Series number:
72-124
Edition:
-
Year Published:
1972
Language:
ENGLISH
Publisher:
United States Department of the Interior, Geological Survey,
Description:
26 p. :maps ;27 cm.