Geographic Coverage

NatureServe Surveyor offers data about at-risk species in the United States and Canada. Not only can you select an area within just about any state, province, or territory, but you can also select an area—e.g., an entire watershed or your own polygon—that encompasses more than one political jurisdiction. The ability to access this “multi-jurisdictional” data from one source is a key part of what makes Surveyor an invaluable tool!

Data Availability

NatureServe has member programs in all 50 U.S. states and areas managed by the Navajo Nation and Tennessee Valley Authority, all of Canada except Nunavut, and numerous countries in Latin America. These programs own the data in our databases; their membership in the NatureServe network allows us to aggregate and disseminate the data. With each of these programs, or “data stewards,” we have a data-sharing agreement that defines what we can reveal of the program’s data and how.

NatureServe Surveyor currently provides data for the United States and Canada in those jurisdictions and for those types of data agreed to by the data stewards, as shown in this map:


Note that some jurisdictions (e.g., Arizona, Maine) have areas within them for which data are not available. These within-state “excluded areas” represent Native American tribal lands, Department of Defense installations, or other places for which we are prohibited by the landowners from releasing any information through Surveyor (but data are available for other areas within those states). Reports for surveys that overlap spatially with any excluded areas will include a statement to that effect, and users must contact the data steward(s) or NatureServe’s custom data services team for more information.

Data Transparency

In most cases, member programs make all data fully transparent via NatureServe Surveyor; however, in some situations we have to mask the data slightly. We do this in one of two ways: by “fuzzing” the data (i.e., enlarging the known location of the species), or by masking (not showing) the name of the species itself, which we indicate by noting that it is a “sensitive species.” We usually do this only in situations where the species is threatened by unusually high collection pressures or where there are landowner concerns or similar sensitivities.

The table below shows where we have had to implement some degree of fuzzing or masking in the jurisdictions that participate in NatureServe Surveyor; unless noted for “all records,” this typically impacts a very small portion of the program’s data.


Any Spatial Data “Fuzzing”?

Any “Sensitive Species”?

Alabama No No
Alaska No No
Alberta No Yes
Arizona Yes (all records) No
California No Yes
Colorado Yes No
Connecticut No Yes
Delaware Yes Yes
Florida No No
Georgia No No
Hawaii No No
Idaho No No
Illinois No No
Indiana No No
Iowa No No
Kansas No No
Kentucky No Yes
Louisiana No No
Maine No Yes
Manitoba Yes No
Maryland No Yes
Michigan No No
Minnesota No Yes (all records)
Missouri No Yes
Mississippi No No
Montana No No
Navajo Nation No Yes
Nebraska No No
Nevada Yes Yes
New Hampshire Yes No
New Mexico No Yes
New York No Yes
North Carolina No No
North Dakota No No
Ohio No Yes
Oklahoma No No
Oregon No No
Quebec No Yes
Saskatchewan No No
South Carolina No No
South Dakota No No
Tennessee No No
Tennessee Valley Authority No No
Texas No No
Utah No No
Vermont No No
Virginia Yes (all records) No
Washington No No
West Virginia No Yes
Wisconson No Yes (all records)
Wyoming Yes No
Yukon Territory No No