DOI: 10.5061/dryad.kh18932jc
title: Data from: Soil chemical variation along a four-decade time-series of reclaimed water amendments in northern Idaho forests

description: Application of municipal reclaimed water to forests for water reclamation
 is a pragmatic approach that provides water and nutrients to soil and
 lowers the liability of reclaimed water disposal, yet little is known
 about the long-term impacts of reclaimed water amendment on forest soil
 chemical properties. We hypothesized that reclaimed water constituents
 will increase plant nutrient availability in soil with the magnitude of
 response depending on the facility establishment date. We collected
 samples from three mineral soil depth layers to 75 cm from treated and
 control plots at five water reuse facilities that represent a four-decade
 time series. Depth explained most of the observed variation. Several plant
 nutrients increased in soil at the different sites in response to
 reclaimed water treatments, including N, Ca, Fe, S, and B concentration as
 well as B content, while P was not significantly affected. Increases in
 cation concentrations positively correlated with pH and salinity. The
 treatment response was significantly greater at all facilities for total
 N, B, and Na. However, the treatment response only occurred at
 long-established facilities for NO3-N and Ca concentrations and for Fe and
 S content. The outcomes of this study are useful for guiding future
 management of soil at forest water reclamation facilities and for limiting
 the risk of downstream environmental impacts.
description: We collected field samples across a time-series of forest water
 reclamation facilities, processed them through laboratory analysis,
 formally analyzed the data using analysis of variance and summarized the
 results of the deposited tabular data in graphical form in the
 manuscript.  The linked manuscript includes detailed methods.
description: # Data from: Soil chemical variation along a four-decade time-series of
 reclaimed water amendments in northern Idaho forests Temesgen G. Wedajo 1,
 [Eureka Joshi2 Ruifang Hu3, Daniel G. Strawn4 and Mark D. Coleman5*
 1. Ethiopian Institute of Agricultural Research, National Soil Research
 Center, Addis Ababa, Ethiopia,
 [getahuntemesgen@gmail.com](mailto:getahuntemesgen@gmail.com)
 2. Environmental Science Program, Trinity College, Hartford, CT, 06105,
 USA; [eureka.joshi@trincoll.edu](mailto:eureka.joshi@trincoll.edu) 1.
 Department of Environmental Science and Technology, College of Agriculture
 and Natural Resources, University of Maryland;
 [rfhu@umd.edu](mailto:rfhu@umd.edu) 2. Department of Soil and Water
 Systems, University of Idaho, Moscow, ID, 83844, USA;
 [dgstrawn@uidaho.edu](mailto:dgstrawn@uidaho.edu) 3. Department of Forest,
 Rangeland, and Fire Sciences, College of Natural Resources, University of
 Idaho, Moscow, ID, 83844, USA;
 [mcoleman@uidaho.edu](mailto:mcoleman@uidaho.edu)
 [https://doi.org/10.5061/dryad.kh18932jc](https://doi.org/10.5061/dryad.kh18932jc) ## Data description The zip directory "FWR_Soil_Chemistry_2025.zip" contains the data spreadsheet and metadata files required to reproduce analyses reported in the associated study. Wedajo, TG; Joshi, E; Hu, R; Strawn, DG; and Coleman, MD All comments and requests should be addressed to: M. D. Coleman ([mcoleman@uidaho.edu](mailto:mcoleman@uidaho.edu)) File list (files within FWR_Soil_Chemistry_2025.zip) * Metadata.csv * FWR.Chem_CN_AOD_Cnt.csv ### File descriptions `README.csv` contains a brief description of study and information for each of data columns in the data file file.  `FWR.Chem_CN_AOD_Cnt.csv` is the data file containing 150 data records and 114 data columns. There are six ID variable columns on the left with the remaining variable columns on the right containing the soil chemical information.