pt_elevations point elevationsfor the Chandler lake B-1 and C-1 1:63,360 scale Quadrangles contours topographic contour lines for the Chandler lake B-1 and C-1 1:63,360 scale Quadrangles section_gridsection grid township_range_gridtownship and range grid manmadeinfrastructures such as roads, airstrips, etc. wells well locations hydrology_lines hydrologic line features such as rivers hydrology_polygons hydrologic polygon features such as lakes
Delaney, P.R., 2009, Geologic Map of the Cobblestone Creek - May Creek Area, Brooks Range Foothills, Alaska: Preliminary Interpretive Report PIR 2009-5, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, Alaska - USA.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000064
Ordinates (y-coordinates) are specified to the nearest 0.000064
Planar coordinates are specified in meters
The horizontal datum used is D_Clarke_1866.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.978698.
| Range of values | |
|---|---|
| Minimum: | 1400 |
| Maximum: | 7500 |
| Value | Definition |
|---|---|
| access | XX |
| airstrip | airstrip |
| Value | Definition |
|---|---|
| lake | lake |
| Range of values | |
|---|---|
| Minimum: | 1328 |
| Maximum: | 6217 |
| Units: | feet |
Point elevations digitized from USGS paper quadrangle maps.Hypsography data exported as DEM from All Topo Maps Software from iGage Mapping Corp., Salt Lake City, Utah (version 7.26.28.7370).
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This data set was created and attributed for use as a base map for the Cobblestone Creek-May Creek geologic mapping project. The dataset was created to provide maximum quality resolution for printing and publication purposes.
Survey, U.S Geological , 1987, Chandler Lake (B-4), Alaska: 15-minute map series unknown, U.S. Geological Survey, Reston, Virginia, USA.
Survey, U.S Geological , 1987, Chandler Lake (C-4), Alaska: 15-minute map series unknown, U.S. Geological Survey, Reston, Virginia, USA.
Person who carried out this activity:
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Spatial data attributes were attached to data objects using ArcGIS 9. Attributes within the geologically mapped area were verified for consistency and completeness by comparing to the paper USGS quadrangle maps. Entities and attributes that occur or extend beyond the geologic map boundary have not been quality controlled for completeness or accuracy.
Hypsography contours are accurate to within the 30m DEM exported from AllTopo.The magnitude of error with respect to ground surface is assumed to be very small or non-existent relative to possible errors in the associated geologic dataset.
This dataset includes geospatial data that contain information about the topography and hydrology of the Chandler Lake C-1 and B-1 1:63,360 quadrangle maps as illustrated by the U.S. Geological Survey.
Polygon topology is present and clean on the originating geospatial dataset. All polygon features were were topologically validated using the ESRI ArcGIS 9.0 software prior to export to shape file format. The logical consistency of the point and line files has been visually checked but not systematically verified.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- Use_Constraints:
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Preliminary Interpretative Report 2009-5
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| Data format: | PDF (version 1.6) |
|---|---|
| Network links: |
<http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=15757> |
| Data format: | ArcGIS Shapefile (version ESRI ArcGIS 9.x) |
|---|---|
| Network links: |
<http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=15757> |
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