Download Free Watershed Assessment In The Southern Interior Of British Columbia Book in PDF and EPUB Free Download. You can read online Watershed Assessment In The Southern Interior Of British Columbia and write the review.

The British Columbia Forest Practices Code made watershed assessment mandatory in community watersheds and on selected high-value fish streams. A research program was established to verify various concepts incorporated into the guidebook that was written to prescribe the method by which watershed assessment was to take place. Other research programs were put in place to better understand hydrologic processes that are occurring in watersheds. This report presents proceedings of a workshop organized to update those who perform & who use the watershed assessments with regard to the most recent research findings. Topics of presentations include watershed processes in interior British Columbia, assessing hydrologic risk, effects of forest cover changes on stream flow, forest influences on snow, effects of harvesting on peak flow, flow modelling, stream channel assessment, sediment budgets, assessing natural sedimentation patterns, and stream- side logging & riparian hazard assessment.
Forests cover approximately 26% of the world's land surface area and represent a distinct biotic community. They interact with water and soil in a variety of ways, providing canopy surfaces which trap precipitation and allow evaporation back into the atmosphere, thus regulating how much water reaches the forest floor as through fall, as well as pull water from the soil for transpiration. The discipline "forest hydrology" has been developed throughout the 20th century. During that time human intervention in natural landscapes has increased, and land use and management practices have intensified. The book will be useful for graduate students, professionals, land managers, practitioners, and researchers with a good understanding of the basic principles of hydrology and hydrologic processes.
The use of cumulative watershed effects models is mandated as part of interagency consultation over projects that might affect habitat for salmonids federally listed as threatened or endangered. Cumulative effects analysis is also required by a number of national forest plans in the Pacific Northwest Region (Region 6). Cumulative watershed effects in many cases are measured with the equivalent clearcut area (ECA) model, which generates an index of cumulative disturbance by considering disturbance type, extent, and recovery over time. Although the model has many limitations, it provides an index of vegetative disturbance that can be used to compare the existing condition of different watersheds, and the potential impacts among land management alternatives. Calculating ECA on multiple watersheds and management scenarios for project-level analysis is a tedious process. We automated the process with a program called Equivalent Treatment Area Calculator to streamline its application on national forests in the Blue Mountains of eastern Oregon. The program, operation, and limitations of the ECA model are described in this paper.
Over the last two decades, hydrologists and geomorphologists have often discussed the need to document the history, scientific discoveries, and field expertise gained in watershed management in British Columbia. Several years ago, a group of watershed scientists from FORREX, academia, government, and the private sector gathered at the University of British Columbia to discuss the idea of a provincially relevant summary of hydrology, geomorphology, and watershed management. Through this meeting, the Compendium of Forest Hydrology and Geomorphology was born. As a synthesis document, the Compendium consolidates current scientific knowledge and operational experience into 19 chapters. To ensure reliable, relevant, and scientifically sound information, all chapters were extensively peer reviewed employing the standard double-blind protocol common to most scholarly journals. Chapters in the Compendium summarize the basic scientific information necessary to manage water resources in forested environments, explaining watershed processes and the effects of disturbances across different regions of the province. In short, the Compendium is about British Columbia and is primarily intended for a British Columbian audience, giving it a uniquely regional focus compared to other hydrology texts. At over 800 pages, the Compendium showcases the rich history of forest hydrology, geomorphology, and aquatic ecology research and practice in British Columbia and sets forth the foundation for the future by showing us how much more we have yet to learn.
A watershed assessment is required before any forest development plan is prepared for a community watershed in British Columbia. This guidebook is intended to provide direction to all professionals required to conduct watershed assessments, based on an assessment of the potential for cumulative hydrological effects from past and proposed forest harvesting and road building. It first describes the components of a watershed assessment, including formation of an advisory committee, compilation of existing information, field assessments, a hydrologist's report, and making forest development plan recommendations. Finally, administrative issues are discussed. Appendices include guidance on identification of watershed units, estimation of peak flow factors, sediment source surveys, and stream channel stability classification.
Lakes are among the most extensive freshwater aquatic ecosystems in the world. Their evolution results from the interactions of numerous natural and anthropogenic factors. This book includes 12 chapters and presents case studies on the impacts of changes and tectonic movements on the evolution of lake water levels (Section 1), the interactions between anthropogenic activities and the physicochemical characteristics of lakes (Section 2), and the limnological characteristics and their interactions with other components of the environment (Section 3).
Includes a database of relevant studies reporting peak flow data across rain-, transient-, and snow-dominated hydrologic zones. Provides a quantitative comparison of changes in peak flow across both a range of flows and forest practices. Increases in peak flows generally diminish with decreasing intensity of percentage of watershed harvested and lengthening recurrence intervals of flow. Peak flow effects on channel morphology should be confined to stream reaches where channel gradients are less than 0.02 and streambeds are composed of gravel and finer material. Managers should evaluate the potential risk of peak flow increases based on factors such as presence of roads, specific mgmt. treatments employed, and watershed drainage efficiency.