Scott A. Drzyzga
Advising Courses GIS&T Research Contact

Click a state to access data.
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PASDA OGRIP NYS GIS Clearinghouse new jersey geographic information network Delaware Spatial Data Clearinghouse Maryland Mapping Resource Guide WV GIS Clearinghouse

No link on this page represents an endorsement of any firm, product, or service.
All links worked on April 4, 2014. Caveat emptor.

National datasets
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USDA Geospatial Data Gateway
The Geospatial Data Gateway (GDG) is the One Stop Source for environmental and natural resources data, at anytime, from anywhere, to anyone.

US Census Bureau, American FactFinder
Gateway to decennial Census counts and annual ACS estimates of demographic, socioeconomic and business data.

US Census Bureau, TIGER Products
TIGER products are spatial extracts from the Census Bureau's MAF/TIGER database, containing features such as roads, railroads, rivers, as well as legal and statistical geographic areas.

US Census Bureau, OnTheMap
A web-based mapping and reporting application that shows where workers are employed and where they live.

USGS, The U.S. National Map
The National Map Viewer provides access to all eight primary data themes, including: include: Elevation, Orthoimagery, Hydrography, Geographic Names, Boundaries, Transportation, Structures, and Land Cover, while products include: US Topo and Historical Topo Maps. .

USGS, National Elevation Dataset
The National Elevation Dataset (NED) is the primary elevation data product of the USGS. It provides basic elevation information for earth science studies and mapping applications in the United States.

FEMA, National Flood Hazard Layer
An application that provides for the display of flood hazard zones, floodways, Coastal Barrier Resources System and Otherwise Protected Area units, community boundaries and names, base flood elevations, cross sections and coastal transects and their labels, hydraulic and flood control structures, and Flood Insurance Rate Map and Letter of Map Revision boundaries and numbers.

NPS, National Park Service
National Park Service geospatial data clearinghouse.

NOAA NWS, National Weather Data in Shapefile format
The National Weather Service produces several data sets that are available in formats available to import into Geographic Information Systems (GIS).

USDA NRCS, Soil Data Access
Soil Data Access is a suite of web services and applications whose purpose is to meet requirements for requesting and delivering soil survey spatial and tabular data, that are not being met by the current Soil Data Mart and Geospatial Data Gateway websites.

Professional Certification

the GIS Certification Institute.

American Society for Photogrammetry & Remote Sensing.

Cool stuff

Brewer C, Harrower M, Woodruff A and Heyman D (2009) ColorBrewer v2.0: Color advice for cartography. PennState University, State College, PA.

Jensen K (2008) Color Explorer. Accessed on April 4, 2014, from

Viégas F and Wattenberg M (2012) wind map, Accessed on April 4, 2014 from

A useful tool for choosing colors that work well together.

Estimated value of Magnetic Declination
NOAA National Geophysical Data Center

Complete Sun and Moon Data for One Day
The US Naval Observatory allows you to obtain the times of sunrise, sunset, moonrise, moonset, transits of the Sun and Moon, and the beginning and end of civil twilight, along with information on the Moon's phase by specifying the date and location.
Ideas and techniques about relief representation on maps.

Bulk Rename Utility
From the website: Bulk Rename Utility is a software utility that allows you to easily rename files and directories. Add date-stamps, replace numbers, insert strings, convert case, add auto-numbers, and process folders and subfolders.

FREEWARE: IrfanView is a very fast, small, compact and innovative graphic viewer for Windows.

the GPS

GPS Basics
The Federal Aviation Administration has posted a brief introduction to the US Global Positioning System. The site also contains information about the WAAS.

The GPS has spawned a new form of recreation - GeoCaching. According to the werbsite, GeoCaching is basically an adventure game for GPS users. The basic idea is to have individuals and organizations set up caches all over the world and share the locations of these caches on the internet. Once found, a cache may provide the visitor with a variety of rewards.

Tasmanian GeoCaching
Next time you need to layover in Tasmania, logon this website and join the international group of Tassie cachers.

Aerial photography & remote sensing

PGS Historical aerial photo library
The Pennsylvania Geological Survey has digitized 1930s-era aerial photography for the Commonwealth of Pennsylvania. They are available via this website.

USGS booklets

Topographic map symbols
Describes and illustrates various symbols used on USGS topographic maps.

Topographic mapping
Introduces topographic mapping, including map scale, control surveys, national standards, symbols, revision, and information sources.

Map projections
Describes the key properties and characteristics of important map projections. Also provides graphics and a chart to help you select the appropriate projection for a given use and extent.

Open Source GIS

Open Street Map
OpenStreetMap is a free editable map of the whole world. It is made by people like you.

Open GIS Consortium
The Open GIS Consortium, Inc. (OGC) is a member-driven, non-profit international trade association that is leading the development of geoprocessing interoperability computing standards. OGC works with government, private industry, and academia to create open and extensible software application programming interfaces for geographic information systems (GIS) and other mainstream technologies.
Open source GIS on the web - on this page you will find papers and publications focusing on cartography, geography or techniques needed for these topics. Includes Scalable Vector Graphics (SVG) demos and tutorials.


Federal Geographic Data Committee
A metadata record is a file of information, usually presented as an XML document, which captures the basic characteristics of a data or information resource. It represents the who, what, when, where, why and how of the resource. Geospatial metadata commonly document geographic digital data such as Geographic Information System (GIS) files, geospatial databases, and earth imagery but can also be used to document geospatial resources including data catalogs, mapping applications, data models and related websites.

Metadata Primer
A "How To" Guide on Metadata Implementation.

Department of Geography & Earth Science Shippensburg University