Package: okBATHTUB
Title: Empirical Reservoir Eutrophication Modelling with Oklahoma
        Calibration
Version: 0.1.11
Authors@R: 
    person("Jordon", "Henderson",
           role  = c("aut", "cre", "cph"),
           email = "jordon.henderson@owrb.ok.gov")
Description: Empirical reservoir water quality modelling using Walker's
        'BATHTUB' Model 1 (second-order available-phosphorus
        sedimentation) from Walker (1985)
        <https://hdl.handle.net/11681/13884> and Walker (1996)
        <https://hdl.handle.net/11681/4353> as the default retention
        model. The Vollenweider (1976) hydraulic- residence form and
        the equivalent formulation of Larsen and Mercier (1976) are
        available as alternatives. Predicts in-lake total phosphorus,
        total nitrogen, chlorophyll-a, and Secchi depth from tributary
        nutrient and hydraulic loading inputs, and computes Carlson
        (1977) <doi:10.4319/lo.1977.22.2.0361> Trophic State Indices.
        Optional Oklahoma-specific chlorophyll and Secchi regression
        coefficients are provided, calibrated from publicly available
        state lake monitoring data. Supports single-segment and
        multi-segment reservoir configurations and load-reduction
        scenario analysis. Designed to complement watershed loading
        models such as the Soil and Water Assessment Tool ('SWAT';
        <https://swat.tamu.edu>) and the U.S. EPA Hydrologic and Water
        Quality System ('HAWQS'; <https://hawqs.tamu.edu>) in a
        two-model nutrient management workflow.
License: MIT + file LICENSE
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
Depends: R (>= 4.1.0)
Imports: utils
Suggests: ggplot2 (>= 3.4.0), dplyr (>= 1.1.0), tidyr (>= 1.3.0),
        stringr (>= 1.5.0), knitr, rmarkdown, testthat (>= 3.0.0)
Config/testthat/edition: 3
VignetteBuilder: knitr
LazyData: true
URL: https://0011235813.github.io/Oklahoma-BATHTUB/,
        https://github.com/0011235813/Oklahoma-BATHTUB
BugReports: https://github.com/0011235813/Oklahoma-BATHTUB/issues
Config/roxygen2/version: 8.0.0
Repository: https://0011235813.r-universe.dev
Date/Publication: 2026-07-18 20:37:48 UTC
RemoteUrl: https://github.com/0011235813/oklahoma-bathtub
RemoteRef: HEAD
RemoteSha: 07e57fa23735daec110184f46c2168a0f55315af
RemoteSubdir: okBATHTUB
NeedsCompilation: no
Packaged: 2026-07-18 21:48:12 UTC; root
Author: Jordon Henderson [aut, cre, cph]
Maintainer: Jordon Henderson <jordon.henderson@owrb.ok.gov>