The connection of fish depending upon water quality, which depends on habitat, which in turn depends upon land use, is
accepted. This paper explores the land use to water quality part. Twenty years ago water quality was degraded largely by
point sources of pollutants coming out of pipes. Regulations, discharge...
This report presents estimates of land uses, concentrating on agricultural land in the Tualatin drainage basin. Acreage in different crop groups and agricultural water use and distribution in the watershed were estimated. The total amounts of nitrogen and phosphate applied to agricultural land and the average loading of nutrients per...