Not all breaks are equal: Variable hydrologic and geomorphic responses to intentional levee breaches along the lower Cosumnes River, California

The transport of water and sediment from rivers to adjacent floodplains helps generate complex floodplain, wetland, and riparian ecosystems. However, riverside levees restrict lateral connectivity of water and sediment during flood pulses, making the re-introduction of floodplain hydrogeomorphic...

Climate-Adaptive Water Year Typing for Instream Flow Requirements in California’s Sierra Nevada

Water year types (WYTs), whereby years are classified by river runoff quantity compared to historical runoff, are one tool to help make major water management decisions. Increasingly, these decisions include instream flow requirements (IFRs) below dams for river ecosystem management. However,...

Management of the Spring Snowmelt Recession in Regulated Systems

In an effort to restore predictable ecologically relevant spring snowmelt recession flow patterns in rivers regulated by dams, this study defined a methodology by which spring flow regimes can be modeled in regulated systems from the quantifiable characteristics of spring snowmelt recessions in...

StreamDev

Forecasts of surface water availability are improved by "ground truth" measurements by stream gaging stations. This project aims to improve stream discharge measurements for regions that lack the infrastructure of access to establish a formal gaging station. Water surface elevation (stage) information can be extracted from images of the stream's banks. The objectives of this project seek to establish open-source methods for the automated partitioning of water surface levels from stream images.

CERC-WET: Sustainable Hydropower Operations

River systems worldwide have been modified through water management practices resulting in impaired flow regimes critical to supporting hydrogeomorphic processes and ecological functionality of riverscapes. In particular, hydropower operations affect downstream ecosystems through changes in flow patterns, temperature, and sediment transport. A functional flows paradigm – emphasizing process-based hydrograph components – has emerged as a guide for developing environmental flow frameworks in heavily managed river systems.

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