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Hydrology of the Hawaiian Islands

This project examines the hydrology of the Hawaiian Islands, focusing on freshwater resources such as precipitation, streamflow, runoff, soil moisture, and groundwater aquifers. It utilizes GIS to investigate natural factors influencing the distribution of freshwater in Hawaii, including elevation, topography, wind direction, and trade winds. The study visualizes rainfall distribution patterns influenced by topography and wind, highlighting rain shadows and the impact of vegetative cover. Additionally, it explores man-made factors affecting freshwater distribution, such as stream diversions. The project aims to quantify the relationships between topography, wind direction, and freshwater flow, using various data sets including DEM, wind speed, NHD, rainfall rasters, aquifers, and streams. For inquiries or collaboration, contact Colleen Dawes at cdawes@utexas.edu.

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Hydrology of the Hawaiian Islands

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  1. Hydrology of the Hawaiian Islands Colleen Dawes, Energy and Earth Resources November 19, 2013

  2. Freshwater Resources: • Precipitation • Streamflow • Runoff • Soil moisture • Groundwater aquifers Hawaiian Islands

  3. Use GIS to explore the natural factors that influence freshwater distribution on Hawaii Elevation Topography Wind Direction Project Description

  4. Hawaii’s Topography and Elevation

  5. Wind Speed and Direction:Hawaii interrupts Pacific patterns

  6. Rainfall Elevation Trade Winds Rainfall Distribution:Influenced by Topography and Wind

  7. Rain Shadows Visualized:Vegetative Cover

  8. NHD Flowline: Maui Rain Shadows Visualized:Stream Location, Need for man-made diversion

  9. NHD Flowline: Oahu Part 2: Man-Made FactorsFreshwater Distribution and Artificial Paths

  10. Data I Have Data I Need Wind direction Other freshwater: snow, fog, soil moisture Time-Series Data: Flow and Consumption • Topography: DEM • Wind Speed • NHD • Monthly & Annual Rainfall Rasters • Aquifers & Streams Progress ReportQuantify relationships between topography, wind direction and flow

  11. Colleen Dawes EER ’14 cdawes@utexas.edu Questions?

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