United States Department of Agriculture
Natural Resources Conservation Service
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NSSC Soil Survey Soil Characterization Database
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Query by Lab Pedon Number

Lab pedon numbers are created by and for the laboratory. The standard form for a lab pedon number from the Kellogg Soil Survey Lab is: nnLxxxx


nn = Two digit number for the year the pedon was sampled. (Examples: 78, 92, 04, 40),

L = Letter (N, P, C, or A),

  • N—Current NSSC laboratory pedon,
  • P—Old NSSC laboratory pedon (1978 through 2000),
  • C—Old Riverside laboratory pedon (1967 through 1977),
  • A—Old Beltsville, Mandan, and Lincoln laboratories and other Soil Survey Investigations Report data (1930 through 1966), and

xxxx = Four digit number assigned by laboratory on receipt of sample. (Reset each fiscal year.)

Example lab pedon numbers: 40A0030, 78P0032, 67C0030, 03N0040.

When entering a query, the asterisk (*) character can be used as a wildcard to replace any number. For example, 78P002* or **P0030. Please be careful if using the asterisk character. An overly broad query can request the complete database.

If you do not know the exact lab pedon number, we suggest you query by country, state, and county. This method provides an array of data from the area of interest. The advanced query method is also available, but it requires more knowledge to use. If you want to use the advanced query method, we suggest you review the user manual. This website is optimized for Windows® Internet Explorer.

For assistance from the Soils Hotline, call Click For Phone Numbers:  or email Soils Hotline.