https://confluence-jwsm.ca/index.php/jwsm/issue/feed 2026-06-19T02:55:35+00:00 Dan Moore editor@confluence-jwsm.ca Open Journal Systems <p>Confluence: Journal of Watershed Science and Management is an open access science journal that aims to increase knowledge and awareness of watershed science and how it applies to management throughout the Pacific Northwest. All Confluence articles undergo technical peer review to ensure accuracy and relevancy to audiences interested in watershed management. The journal’s goal is to publish articles that will provide access to relevant, cutting edge information in a format that is easy to ready, reliable, and objective. Confluence is intended not only for the scientific community and water professionals, but for resource managers, government staff, stewardship groups, and other interested individuals who may not normally seek their information from journals.</p> <p>A key feature of Confluence is a preference for short (1500–2000 word) applied science articles that demonstrate how scientific learnings can be applied to water resources management. Types of articles accepted for Confluence include standard science manuscripts, applied “How to” articles, brief literature reviews, conference/ workshop summaries, and other extension-based articles. The focus of Confluence is on the extension of Watershed Management science primarily in Western North America, but submissions from other areas are most certainly welcomed.<br><br>Disclaimer: All articles published in Confluence are technically reviewed to ensure that we extend reliable and technically sounds content to our readers. All content published in Confluence is intended to provide general information and should not be relied upon as legal advice or legal opinion. The information and opinions expressed in Confluence are those of the respective authors and the editors and publisher do not warrant their accuracy or reliability and expressly disclaims any liability in relation there to.</p> https://confluence-jwsm.ca/index.php/jwsm/article/view/71 2025-11-27T15:25:05+00:00 R.D. (Dan) Moore dan.moore@ubc.ca Lili Callahan lilicallahan@gmail.com

<p class="p1">Stream temperature is widely considered a “master variable” in aquatic ecosystems. Stream temperature models are often used to evaluate historic thermal habitat suitability where measurements are lacking and to quantify the potential effects of future climate scenarios. A major barrier to the widespread application of models is the sparse coverage and limited duration of observed stream temperature records to support model calibration. This study quantified the sensitivity of the hybrid stream temperature model Air2stream to the length of the calibration record. The study involved 23 hydrometric stations in British Columbia, Canada, including rain-dominated, snow-dominated, hybrid rain-snow, and nivo-glacial regimes within regulated and unregulated systems. Air2stream was calibrated using two approaches. The first used all possible subsets of consecutive years ranging from one to eight years in length, depending on data availability at each site, followed by validation on the data not used for calibration. The second used the years 2021 and 2022 for validation after using all possible subsets of consecutive years up to and including 2020 for calibration. Air2stream generally performed best for rain-dominated and hybrid regimes and worst for nival regimes. Even just two years of calibration data produced validation root-mean-square errors of less than 2ÅãC for all but one site, regardless of hydrologic regime or regulation status, and calibrating with three or four years provided similar performance in validation to longer calibration periods.</p>

2026-06-19T00:00:00+00:00 Copyright (c) 2026 R.D. (Dan) Moore, Lili Callahan