High quality digital hypsography data is needed as a part of many research projects at CARES. The U. S. Geological Survey (USGS) has as one of it's missions to produce and disseminate digital hypsograhy. However, CARES requires more timely digital data production than existing priorities of the USGS, National Mapping Division, production capacity alone will allow. Therefore, CARES has entered into a cooperative agreement with the USGS in order to jointly produce 1:24,000 scale hypsography ArcIfo coverage data for Missouri with funding provided by MoDNR. Quadrangles are chosen for development based on the needs of soil scientists and other interested parties.
4-19-2005 Bounding Coordinate Spatial Extents have been updated for all hypsography and DEM metadata.
Download Hypsography
Download associated 10 meter DEMs
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Hypsography Digitizing Status Map (click to view larger image)
Principle Investigators: Chris Barnett, Chris Fulcher
Project Manager: Scott Burton
Project Staff: Michael Barbaro, Michael Hardy, Richard Charrier, Craig Callison, Brian Beckstrom
Funding Amount: See Missouri Soils Digitization Project
Funding Source: Missouri Department of Natural Resources (MoDNR)
Project Duration: October 1997 - June 2005
How do I find the hypsography I want?
First download the file QuadZ15N83.e00.gz from the ftp site. It looks like the picture below and has all of the relevant data for the state. (All coverages are produced at the 7.5 minute quadrangle level which matches a typical topographic map.) Then for example if you were looking for the Columbia, Northeast quadrangle you would search Mapname = Columbia NE. This will give you the Hypcode of hyp38092h3. Note that the hypcode is based on the usgscode of 38092-h3. Then you would go the the HYP38 directory for your data
This file also is home to other information about the data such as the commonly used source date of the topographic map that the data was produced from, whether the map was produced in meters or feet and what contour interval was used. You can access all this information in programs like ArcView using the info tools. Once you identify which quadrangles you need to download, you will find them in their appropriate Latitude folders.
How do I know what latitude directory my data is in?
Missouri is broken into 6 degrees of latitude. It looks like the picture below. The southern bootheel strip (violet color) is in latitude 36 and the northern strip (gold color) is in latitude 40. Using the earlier example of Columbia NE quadrangle with a hypcode of hyp38092h3 I can tell that my latitude is 38 degrees and so I should look in the HYP38 folder for my hypsography coverage.
How do I know what new data is available?
The file "NewDate.txt" is a text file that has any changes and you can quickly tell if there are any new updates as the filename has the date of the last update listed in its name. The project is nearing completion, and as new data becomes available, this is a file that is updated with any changes that might be relevant. If any errors are discovered please contact the (Project Manager) and we will make the appropriate changes! Where is the Metadata located?
Metadata files are located inside each individual coverage directory. It is based on Federal Geographic Data Committee (FGDC) standards and written with eXtensible Markup Language (XML) tags. It is ideally viewed in ARCcatalog or can be viewed in a web browser. Metadata files contain where the information originated, who compiled it, and all other relevant technical details about the data set. Some examples of "properties" are map extent or precision of the data. Some examples of "documentation" are steps on how the data was created and error checked for logical consistency or collar information from the matching topographic map. Quick start information?
All data is in UTM Zone 15 NAD 83. Each quadrangle consists of 1 line and 1 point coverage. (3 quadrangles created by a third party contained no point coverages, 37093a2, 37093d5, 37093d6) Items found in the coverages. Elev_F: The elevation in FEET (or the highest elevation of a line carrying more than one contour.)* Elev_M: The elevation in METERS (or the highest elevation of a line carrying more than one contour.)* *These were changed from the field "Elevation" in July 2005. ElevLow: The lowest elevation of a contour (lines only) if it carries more than one contour. Color: 1 for standard contour, 6 for index contour and 12 for any "Special" coded contour. Special: 3 character identifier for additional information. See below. Special feature codes - Arcs dep = depression uwc = underwater uwd = underwater-depression car = carrying contours that have more than one elevations (i.e. steep relief) cde = carrying-depression cuw = carrying-underwater sup = supplementary contour sde = supplementary-depression voi = void arcs bvd = void arcs on boundary Special feature codes - Points spt = spot elevation bsp = bridge spot ben = benchmark (not available in third party coverages.)
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