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Portage Creek: Nonpoint Source Pollution Effects on Quality of the Water Resource

Publication number Date Published
95-300January 1991
VIEW NOW Portage Creek: Nonpoint Source Pollution Effects on Quality of the Water Resource (Number of pages: 98) (Publication Size: 2MB)

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Author(s) Plotnikoff, R.
Description Prevalent surface water quality problems in Portage Creek are probably exacerbated by land use in the watershed and by ground water influences. Quantified land use and activity information for the Portage Creek watershed was useful in interpretation of patterns of pollution observed during this study. Land use types such as pasturing and cropland appeared to significantly influence water quality in Portage Creek. Total suspended solids and total inorganic nitrogen concentrations and loads were probably influenced by over-application of manure or commercial fertilizers during the wet season. Total phosphorus and fecal coliform concentrations were not found to be seasonally influenced.
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Keywords stream, nonpoint, total suspended solids, creek, nitrogen, resource, study, water, water quality, sediment, quality, water resource, watershed, pH, phosphorus, point source, pollution, ground water, dissolved oxygen, fecal coliform, copper, chromium, benthic
WATERSHED Water Resource Inventory Area 05 Stillaguamish