Interface to the National Lakes Assessment

Client for programmatic access to the 2007 and 2012 National Lakes Assessment database <> containing data for hundreds of lakes in the lower 48 states of the contiguous US.

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The goal of nlaR is to provide an R interface to the National Lakes Assessment data. At this point it serves either the 2007 or 2012 data (see examples below).


You can install nlaR from Github with:



Load package


Retrieve data from EPA Website

nla_get(2012, use_rappdirs = TRUE)

Load data from local machine

dt <- nla_load(2012)

View NLA tables

#>  [1] "algaltoxins"    "atrazine"       "bentcond"       "bentmet"       
#>  [5] "benttaxa_wide"  "chla_wide"      "phytocnt"       "phytotaxa_wide"
#>  [9] "secchi"         "topsedhg"       "waterchem_wide" "wide_benthic"  
#> [13] "wide_phab"      "wide_phabmet"   "wide_profile"   "wide_siteinfo" 
#> [17] "zoopcond"       "zoopmets"       "zooptaxa_wide"
#> 1        2/12/2014 6160        PHYL    4075        BIOVOLUME 219.9113
#> 2        2/12/2014 6160        PHYL    4075          DENSITY       25
#> 3        2/12/2014 6160        PHYL    4075   INITIAL_VOLUME     1080
#> 4        2/12/2014 6160        PHYL    4095 SUBSAMPLE_VOLUME      200
#> 5        2/12/2014 6160        PHYL    4095   VOLUME_COUNTED       10
#> 6        2/12/2014 6160        PHYL    4095       TOTAL_AREA 283.5287

More Examples

See vignettes.


  • National Lakes Assessment EPA page

  • Water quality metadata

  • Stoddard, J.L., Van Sickle, J., Herlihy, A.T., Brahney, J., Paulsen, S., Peck, D.V., Mitchell, R. and Pollard, A.I., 2016. Continental-scale increase in lake and stream phosphorus: Are oligotrophic systems disappearing in the United States?. Environmental Science & Technology, 50(7), pp.3409-3415. 10.1021/acs.est.5b05950


nlaR 0.4

  • Bug fix to create missing folder when using rappdirs

nlaR 0.3

  • Added a file to track changes to the package.

Reference manual

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0.4.0 by Joseph Stachelek, a year ago

Report a bug at

Browse source code at

Authors: Joseph Stachelek [aut, cre]

Documentation:   PDF Manual  

GPL license

Imports rappdirs

Suggests knitr, rmarkdown, dplyr, magrittr, skimr, sf, maps, R.rsp

See at CRAN