A Resource for the Protected Areas Database of the United States (PAD-US)

Posts by padus

Naming agencies in protected areas databases

Managing agency datasets are integrated into PAD-US for federal agencies, some national nonprofits, and as available for each state. Appropriately, the USGS PAD-US team uses the names as submitted by the contributing data stewards.

The challenge is that, particularly for state data collections, the names of owning and managing agencies may not be consistent, leading to challenges when classifying or searching protected areas data. One record may show the “Town of Jonesville” as the owner, while another might show “Jonesville town”, or some other variation – all meaning the same agency.  Here are more examples, from PAD-US:

image of agency naming issues


GreenInfo Network’s involvement in developing the California Protected Areas Database (CPAD), which has 1,000 agencies’ holdings inventoried, and its longstanding work with PAD-US led us to develop a short working paper about agency naming practices, which you can download here.

In it, we review the issues with naming, as discovered in reviewing PAD-US data from states, and we outline ways that state data stewards can easily improve their inventories of local and regional (and even state) holdings. While it may take a few hours (usually not more), once done, it makes a dataset much more valuable to users. Lots of GIS options are reviewed.

The paper also outlines a way to have a simple master agency database (usually in the form of an online spreadsheet), which, linked to a GIS database through an agency ID, can make both updating much more efficient and can add more functionality. In California, for example, we take standard agency levels or types (“nonprofit, special district”) that are assigned to every agency and create subtypes (“land trust”, “museum”; or “port district”, “flood district”), allowing for much more specific queries and searches. Changes done in the agency database are then rolled automatically into the GIS database via linking (all of which can be done fully in GIS, too – but the above approach may be more straightforward for small agency GIS shops).

Image of spreadsheet

Give the paper a read and let us know what you think!


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PAD-US and Fed Lands Group Presentation at Dept. of Interior

PAD-US is nearing publication of its version 2 release, which is a major improvement in coverage, structure, and quality over version 1.4. To preview the database changes and to highlight roles of federal agencies in developing this new version, the USGS PAD-US team led a briefing presentation at the Department of the Interior on July 9, 2018.

The presentation featured representatives from four of the agencies in the Federal Lands Working Group (Doug Vandegraft of Bureau of Ocean and Energy Management; Troy Warburton of the US Forest Service, Ron Salz of the US Fish & Wildlife Service and Bob Ratcliffe of the National Park Service), plus the PAD-US Coordinator, Lisa Johnson of Boise State University, a USGS Cooperator.

You can watch the hour-long presentation from the Dept. of Interior media site

or access presentation slides.

Doug Vandegraft (BOEM), FGDC Federal Lands Working Group c0-chair

Lisa Johnson (USGS Cooperator – Boise State University) Federal Lands Working Group co-chair:







The whole panel:

Lisa Johnson (USGS Cooperator), Troy Warburton (USFS), Ron Salz (FWS), Doug Vandegraft (BOEM), Bob Ratcliffe (NPS)

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PAD-US and Public Health

PAD-US is a great resource for public health researchers, analysts, planners and others. Here’s a 45 minute webinar recorded in July 2017 that outlines how PAD-US works and indicates ways that it can help those working on public health, including active living, park equity and other related issues:


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