Person

Noah Knowles

Research Hydrologist

Email: nknowles@usgs.gov
Office Phone: 650-329-4476
ORCID: 0000-0001-5652-1049

4 items:

Data used in projected flow analysis in Yolo Bypass under 20 scenarios of climate change Yolo Bypass is an ecological feature of the Bay-Delta ecosystem in California that provides floodplain habitat for spawning and rearing of Sacramento Splittail (Pogonichthys macrolepidotus) and rearing of juvenile Chinook Salmon (Oncorhynchus tshawytscha) when inundated. We used outputs from 10 climate change models for two Representative Concentration Pathways (RCPs) for greenhouse gas concentrations to assess the effects of climate change on the frequency, duration, and timing of flood flows in Yolo Bypass. We also assessed a planned notched weir modification to the primary weir that controls inflow from the Sacramento River into Yolo Bypass that has been designed to allow the bypass to be inundated at lower river... Categories: Data; Tags: Climatology, Hydrology, Sacramento River, USGS Science Data Catalog (SDC), Yolo Bypass, All tags...
Hydroclimatology of Watersheds and Estuaries Research Objectives: To better understand the response of watershed hydrology, freshwater management and estuaries to climate variability and change. In the estuarine component of this research, there is an emphasis on the responses of physical processes that drive ecological variability and change. Categories: Project; Tags: Climate Change, Ecology, Estuaries and Near-Shore Environments, Hydroclimatology (including droughts and floods)
Data and Associated Code for Projections of Unimpaired Flows, Storage, and Managed Flows for Climate Change Scenarios in the San Francisco Bay-Delta Watershed, California This data release includes data containing projections of unimpaired hydrology, reservoir storage, and downstream managed flows in the Sacramento River/San Joaquin River watershed under scenarios of future climate change generated for the CASCaDE2 project (Computational Assessments of Scenarios of Change for the Delta Ecosystem, phase 2). Code used to produce the data is also included. The dataset is produced using a multiple-model approach. First, downscaled global climate model outputs are used to drive an existing Variable Infiltration Capacity/Variable Infiltration Capacity Routing (VIC/RVIC) model of Sacramento/San Joaquin hydrology, resulting in projections of daily, unimpaired flows throughout the watershed.... Categories: Data; Tags: Don Pedro Reservoir, Folsom Lake, Lake McClure, Lake Oroville, Millerton Lake, All tags...
Data used in projected air and water temperatures for selected regions of the upper San Francisco Estuary and Yolo Bypass under 20 scenarios of climate change Understanding the effects of climate change is a substantial challenge in estuarine systems because the mixing of freshwater and ocean water adds complexity to climate change projections. Such climate change projections have been conducted in the San Francisco Estuary as part of the U.S. Geological Survey’s CASCaDE Project. In this project, we assessed downscaled air temperature data from 10 Global Climate Change models under 2 Representative Concentration Pathway (RCP) trajectories for greenhouse gas concentrations for three regions of the upper San Francisco Estuary: Suisun and Grizzly Bays, Suisun Marsh, and the legal Delta. We also utilized previously derived regression models to estimate future water temperatures... Categories: Data; Tags: CASCADE Project, Climatology, Grizzly Bay, Sacramento-San Joaquin Delta, San Francisco Estuary, All tags...

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