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Lauren Hay

Estimating Flows at Ungaged Stations
While streamgages can provide accurate and timely measurements of streamflow, streamflow needs are too wide ranging and disparate to allow installation of streamgages at every location where information is required. This project seeks to develop estimates of streamflow at ungaged locations by making use of nearby gaged records and state of the art modeling techniques.
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Assessing the Drivers of Water Availability for Historic and Future Conditions in the South Central U.S.
Understanding the changes in the distribution and quantity of, and demand for, water resources in response to a changing climate is essential to planning for, and adapting to, future climatic conditions. In order to plan for future conditions and challenges, it is crucial that managers understand the limitations and uncertainties associated with the characterization of these changes when making management decisions. Changes in consumptive water use (water removed without return to a water resources system) will change streamflow, impacting downstream water users, their livelihoods, as well as aquatic ecosystems. Historical changes in available water may be attributed to changes in precipitation; but these changes...
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Developing a VisTrails Platform for Modeling Streamflow Hydrology and Projecting Climate Change Effects on Streamflow
Hydrologic models are used throughout the world to forecast and simulate streamflow, inform water management, municipal planning, and ecosystem conservation, and investigate potential effects of climate and land-use change on hydrology. The USGS Modeling of Watershed Systems (MoWS) group is currently developing the infrastructure for a National Hydrologic Model (NHM) to support coordinated, comprehensive, and consistent hydrologic model development and application. The NHM is expected to provide internally consistent estimates of total water availability, water sources, and streamflow timing, and measures of uncertainty around these estimates, for the entire United States. VisTrails, a scientific workflow and provenance...
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