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Water-Quality Data-Collection Activities in Colorado and Ohio: Phase 3. Evaluation of Existing Data for Use in Assessing Regional Water-Quality Conditions and Trends (Chapter C).

机译:科罗拉多州和俄亥俄州的水质数据收集活动:第3阶段。评估用于评估区域水质条件和趋势的现有数据(C章)。

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摘要

During the past several years, a growing number of questions have been raised by members of Congress and others about current water-quality conditions in the Nation, trends in water quality, and the major factors that affect water-quality conditions and trends. One area of particular interest and concern has been the suitability of existing water-quality data for addressing these types of questions at regional and national scales. In response to these questions and concerns, the U.S. Geological Survey began a pilot study in Colorado and Ohio to determine (1) the characteristics of current water-quality data-collection activities of Federal, State, regional, and local agencies and universities and (2) how well the date from these activities, collected for various purposes and using different procedures, can be used to improve our ability to address questions.

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