Washington Geothermal Play Fairway Analysis Heat, Permeability, and Fracture Model Data washington_playfairway_phase2_final_combined_rasters.zip

This submission contains raster and vector data for the entire state of Washington, with specific emphasis on the three geothermal play fairway sites: Mount St. Helens seismic zone (MSHSZ), Wind River valley (WRV), and Mount Baker (MB). Data are provided for 3 major geothermal models: heat, permeability, and fluid-filled fractures, and an additional infrastructure model. Both of the permeability and fluid-filled-fracture models are produced at 200 m and at 2 km depths; the heat model is only produced at the 200 m depth. Values are provided for both model favorability and model confidence. A combined model at 200m and 2 km depths is provided for favorability, confidence, and exploration risk.

Raster data are provided in GeoTiff format and have a statewide coverage. Cell size is 104.355 ft; file type is unsigned 8-bit integer (0-255); 0 represents no favorability or confidence; 255 represents maximum favorability or confidence. The NAD83(HARN)/Washington South (ftUS) projection is used (EPSG:2927). Vector data are provided in shapefile or comma-delimited text file formats. Geographic coordinates, where provided, are in WGS84. A readme file accompanies each folder and provides an overview and description of the enclosed data.

The heat model combines 5 intermediate raster layers (which are included in the download package): temperature gradient wells, young volcanic vents, hot springs, young intrusive volcanic rocks, and geothermometry. The permeability model combines 8 intermediate raster layers: density of mapped faults, 2D dilation tendency of mapped faults, 2D slip tendency of mapped faults, seismicity, 3D dilation tendency, 3D slip tendency, 3D maximum coulomb shear stress, and 3D slip gradients. The fluid-filled fracture model combines up to 4 intermediate rasters: resistivity from magneto-telluric 3D inversions, seismicity, Vp/Vs anomalies from passive seismic tomography, and Vs anomalies from ambient-noise tomography.

A statewide infrastructure model is also provided that formalizes land-use constraints and restrictions relevant for geothermal prospecting and development. This model combines 10 intermediate rasters: areas off limits to drilling, existing or proposed geothermal leases, DNR-owned land, land-use restrictions along the Columbia River Gorge, areas inundated by water, availability of potential process water, proximity to existing roads, proximity to transmission lines, distance from urban areas, and snow-related elevation restrictions.

Supporting vector data for the development of each raster layer is provided.

For details on the areas of interest and modeling process please see the 'WA_State_Play_Fairway_Phase_2_Technical_Report' in the download package. This folder contains the final model results for the Washington State Phase 2 Play Fairway Analysis in 3 separate folders. Each folder contains a GeoTiff for the 200 m depth slice and the 2 km depth slice. The construction of these files and their GIS parameters are detailed in the Phase 2 Technical Report. Each raster is classified from 0 (least favorable/least confident) to 255 (most favorable/most confident). A brief summary of this folder's contents and processing steps is provided in the enclosed readme file.

Data and Resources

Metadata Source

Additional Info

Field Value
Citation Date 2017-12-23T00:00:00-07:00

Harvest Information

Original ID f0000003-58cc-4372-a567-000000000992
Index Date 2018-06-14T11:02:34-06:00
Original Format ISO-USGIN
Original Version 1.2

Author

Name Alex Steely
Position primary contact
Organization Washington Geological Survey
Email alex.steely@dnr.wa.gov

Geographic Extent

North Bound 49
South Bound 45.5
East Bound -117
West Bound -125