Package: swcEcon
Title: Economic Analysis of Soil and Water Conservation Measures in
        Watersheds
Version: 0.1.0
Authors@R: 
    person(
        given = "Sadikul",
        family = "Islam",
        email = "sadikul.islamiasri@gmail.com",
        role = c("aut", "cre"),
        comment = c(ORCID = "0000-0003-2924-7122")
    )
Description: Provides functions and benchmark datasets for the economic
    appraisal of soil and water conservation (SWC) measures in watershed
    development projects. Implements benefit-cost ratio (BCR), net present
    value (NPV), internal rate of return (IRR) via the bisection method of
    Brent (1973, ISBN:9780130223715), modified BCR, marginal rate of return
    using the CIMMYT (1988, ISBN:9686127127) method, payback period,
    soil loss economic valuation via the Universal Soil Loss Equation of
    Wischmeier and Smith (1978, ISBN:0160016258), groundwater recharge
    valuation, employment generation ratio, sensitivity analysis, switching
    value analysis, and Monte Carlo simulation. Six datasets are included:
    state-wise BCR benchmarks from NABARD (2019) watershed evaluations,
    USLE erodibility parameters for Indian soil orders from NBSS and LUP,
    rainfall erosivity for twenty Indian districts from IMD data, SWC unit
    cost norms from PMKSY-WDC (GoI 2015), and two hypothetical datasets for
    illustration. Methods follow Gittinger (1982, ISBN:9780801825439) and
    Squire and van der Tak (1975, ISBN:9780801816697).
License: GPL (>= 3)
Encoding: UTF-8
Language: en-US
LazyData: true
RoxygenNote: 7.3.3
Depends: R (>= 4.1.0)
Imports: stats, graphics, grDevices, utils
Suggests: testthat (>= 3.0.0), knitr, rmarkdown, covr
VignetteBuilder: knitr
Config/testthat/edition: 3
NeedsCompilation: no
Packaged: 2026-04-13 05:18:42 UTC; acer
Author: Sadikul Islam [aut, cre] (ORCID:
    <https://orcid.org/0000-0003-2924-7122>)
Maintainer: Sadikul Islam <sadikul.islamiasri@gmail.com>
Repository: CRAN
Date/Publication: 2026-04-16 20:10:02 UTC
Built: R 4.6.0; ; 2026-04-25 22:42:08 UTC; unix
