The objective of this study was to determine if the stability of water temperature attributes suggested by an analysis conducted in 2003 (Larson and Larson 2001; 2003) was continued over a 20-yr period. The pattern of degree accumulations observed in the daily heating and cooling cycles of three streams in 1998, 2013, 2014, 2016, and 2018 were studied in Grant County, Oregon. The average air and water temperatures remained stable at each site and followed the expected natural patterns (Larson and Larson 2001) described in an earlier study. Within each sampling year, mean air and water temperature remained within 1−2°C and there were no significant differences between the rates of heating between the study years or between sites.

这项研究的目的是确定2003年进行的分析（Larson和Larson 2001； 2003）所建议的水温属性的稳定性是否持续了20年。在俄勒冈州格兰特县研究了1998年，2013年，2014年，2016年和2018年在三股水流的每日加热和冷却循环中观察到的度数累积模式。每个地点的平均空气和水温保持稳定，并遵循早期研究中描述的预期自然模式（Larson和Larson 2001）。在每个采样年内，平均空气和水温保持在1-2°C之内，并且在研究年度之间或站点之间的加热速率之间没有显着差异。