NPSTORET - Trend Analysis
National Park Service, Water Resources Division. 2020. NPSTORET - Trend Analysis. National Park Service, Water Resources Division
NPSTORET includes the ability to evaluate water quality data for changes or trends over time. Using the Mann-Kendall trend test, which makes no assumption about the distribution of the data, allows for missing data, is not greatly affected by outliers, handles censored data easily, and accommodates irregularly-spaced monitoring periods, NPSTORET determines whether there is an increase or decrease in a measured parameter over time and whether the trend is statistically significant.
- Type
- Help Documentation
- Authors
- National Park Service, Water Resources Division
- Date of Issue
- 2020-03-26
- Publisher
- National Park Service, Water Resources Division
- Keywords
- analysis, confidence intervals, data, EQuIS, Mann-Kendall, NPSTORET, quality, slope, STORET, Thiel-Sen, trend, water, WQX
- Subjects
- Ecological Framework: Water | Water Quality | Water Chemistry , Ecological Framework: Water | Water Quality | Nutrient Dynamics , Ecological Framework: Water | Water Quality | Toxics , Ecological Framework: Water | Water Quality | Microorganisms , Ecological Framework: Water | Water Quality | Aquatic Macroinvertebrates and Algae