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Streams_TrendLikelihood_Results

Published by data.kingcounty.gov | King County, Washington | Metadata Last Checked: February 14, 2026 | Last Modified: 2026-02-11
Trend analysis results for water quality data collected through King County's ambient stream water quality monitoring program. Trends were calculated for all sites with at least 5 years of data. Trend results are based on Mann-Kendall–style pairwise slope estimation with censored-data imputation using a truncated log-normal distribution. Trend likelihoods reflect statistical probability rather than regulatory exceedance or causal inference. Results may be sensitive to data gaps, sampling frequency, and changes in analytical methods over time.

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