List of Published Soil Surveys, United States
~90% of soil surveys from all states are available online at: https://www.nrcs.usda.gov/wps/portal/nrcs/soilsurvey/soils/survey/state/
Most soil surveys (and subsequent soil maps) can be found through the NRCS link above. The pdf’s of the soil surveys can be viewed using any browser, however, the soil maps can (currently) only be viewed using Firefox or possibly Microsoft Edge.
The soil surveys are available in print in Parks Library according to the table below.
|Soil Survey of Iowa, Report||1917-1942||
S599 I8 Io9s
|Storage, Microfilm, Special Collections||Covers only 82 of the 99 Iowa counties|
|Soil Maps of Iowa||1913-1930||
S599 I8 S65x
Covers 70 Iowa counties, including maps not covered by the above set.
Maps taken from the two series below and cut up and mounted in separate booklets by county, with one township per leaf.
|Soil Survey Reports (U.S.)||Covers 1923 onwards||
|Tier 5||All States, including Iowa (post-1923)|
|Field Operations of U.S. Bureau of Soils||1899-1922||
|Parks Library Storage Annex||All States, including Iowa (pre-1922)|
(NOTE: pre-1922 reports are in the Field Operations of U.S. Soils publication)
Concerning the state of Iowa soil maps: The following soil surveys for the county/year indicated are not available on the NRCS website. Soil maps only are available online for the counties with associated URLs.
Direct Links to missing Iowa Counties from the NRCS website where available through the ISU digital repository.
|Clarke County – 1926||https://lib.dr.iastate.edu/soilmaps/58/|
|Decatur County – 1910|
|Fremont County – 1928|
|Guthrie County – 1929||https://lib.dr.iastate.edu/soilmaps/92/|
|Hancock County – 1930||https://lib.dr.iastate.edu/soilmaps/91/|
|Ida County – 1939||https://lib.dr.iastate.edu/soilmaps/95/|
|Jefferson County – 1925||https://lib.dr.iastate.edu/soilmaps/59/|
|Lee County - 1916||https://lib.dr.iastate.edu/soilmaps/7/|
|Marion County – 1939|
|Monroe County – 1931|
|Osceola County - 1940|
|Pocahontas County – 1928||https://lib.dr.iastate.edu/soilmaps/85/|
|Story County – 1941|
|Tama County - 1950|
|Taylor County – 1954|
|Washington County - 1930||https://lib.dr.iastate.edu/soilmaps/93/|
|Winneshiek County – 1927|
|Woodbury County - 1923|
|Worth County - 1922||https://lib.dr.iastate.edu/soilmaps/60/