Assessing the Hydrogeomorphic Effects of Environmental Flows using Hydrodynamic Modeling

摘要: Water managers are increasingly using environmental flows (e-flows) as a tool to improve ecological conditions downstream from impoundments. Recent studies have called for e-flow approaches that explicitly consider impacts on hydrogeomorphic processes when developing management alternatives. Process-based particularly relevant in river systems been highly modified and where water supplies over allocated. One-dimensional (1D) two-dimensional (2D) hydrodynamic models can be used resolve at different spatial temporal scales support the development, testing, refinement of hypotheses. Thus, objective this paper is demonstrate use assisting stakeholders targeting assessing within decision-making framework. We present case study e-flows Rio Chama northern New Mexico, USA, 1D 2D modeling was collaborative process implement an experiment. A specific goal spawning habitat brown trout by flushing fine sediments gravel features. The results revealed model provided much greater insight with respect sediment transport processes, which led reduction recommended discharge. suggest useful tools improving understanding, recommendations, supporting adaptive even limited or no data available calibration validation.