{ "_id": "6a198e8cacfb0bcc41dfcc64", "Package": "okBATHTUB", "Title": "Empirical Reservoir Eutrophication Modelling with Oklahoma\nCalibration", "Version": "0.1.10", "Authors@R": "person(\"Jordon\", \"Henderson\",\nrole = c(\"aut\", \"cre\", \"cph\"),\nemail = \"jordon.henderson@owrb.ok.gov\")", "Description": "Empirical reservoir water quality modelling using Walker's\n'BATHTUB' Model 1 (second-order available-phosphorus\nsedimentation) from Walker (1985)\n and Walker (1996)\n as the default retention\nmodel. The Vollenweider (1976) hydraulic- residence form and\nthe equivalent formulation of Larsen and Mercier (1976) are\navailable as alternatives. Predicts in-lake total phosphorus,\ntotal nitrogen, chlorophyll-a, and Secchi depth from tributary\nnutrient and hydraulic loading inputs, and computes Carlson\n(1977) Trophic State Indices.\nOptional Oklahoma-specific chlorophyll and Secchi regression\ncoefficients are provided, calibrated from publicly available\nstate lake monitoring data. Supports single-segment and\nmulti-segment reservoir configurations and load-reduction\nscenario analysis. Designed to complement watershed loading\nmodels such as the Soil and Water Assessment Tool ('SWAT';\n) and the U.S. EPA Hydrologic and Water\nQuality System ('HAWQS'; ) in a\ntwo-model nutrient management workflow.", "License": "MIT + file LICENSE", "Encoding": "UTF-8", "Config/testthat/edition": "3", "VignetteBuilder": "knitr", "LazyData": "true", "URL": "https://0011235813.github.io/Oklahoma-BATHTUB/,\nhttps://github.com/0011235813/Oklahoma-BATHTUB", "BugReports": "https://github.com/0011235813/Oklahoma-BATHTUB/issues", "Config/roxygen2/version": "8.0.0", "NeedsCompilation": "no", "Packaged": { "Date": "2026-05-29 12:59:59 UTC", "User": "root" }, "Author": "Jordon Henderson [aut, cre, cph]", "Maintainer": "Jordon Henderson ", "Repository": "https://cran.r-universe.dev", "Date/Publication": "2026-05-29 12:31:01 UTC", "RemoteUrl": "https://github.com/cran/okBATHTUB", "RemoteRef": "HEAD", "RemoteSha": "4004f46444947c9a544a02a032ebff0ac20545d2", "MD5sum": 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"GitHub-Actions", "_upstream": "https://github.com/cran/okBATHTUB", "_commit": { "id": "4004f46444947c9a544a02a032ebff0ac20545d2", "author": "Jordon Henderson ", "committer": "cran-robot ", "message": "version 0.1.10\n", "time": 1780057861 }, "_maintainer": { "name": "Jordon Henderson", "email": "jordon.henderson@owrb.ok.gov", "login": "0011235813", "description": "Data analyst & environmental scientist focused on water resources, spatial analysis, and data-driven decision support using R, GIS, and Shiny.", "uuid": 169918085 }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.1.0", "role": "Depends" }, { "package": "utils", "role": "Imports" }, { "package": "ggplot2", "version": ">= 3.4.0", "role": "Suggests" }, { "package": "dplyr", "version": ">= 1.1.0", "role": "Suggests" }, { "package": "tidyr", "version": ">= 1.3.0", "role": "Suggests" }, { "package": "stringr", "version": ">= 1.5.0", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { 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"date": "2026-05-29" } ], "_exports": [ "ok_hydraulics", "ok_inlake", "ok_lake_ecoregion", "ok_load", "ok_load_multi", "ok_plot_response", "ok_plot_scenario", "ok_plot_segments", "ok_plot_tsi", "ok_reservoir", "ok_reservoir_summary", "ok_retention", "ok_scenario", "ok_scenario_sweep", "ok_segment", "ok_segment_chain", "ok_segment_summary", "ok_theme", "ok_trophic_colors", "ok_tsi", "ok_tsi_observed" ], "_datasets": [ { "name": "ok_lake_ecoregions", "title": "Oklahoma lakes -> EPA Level III ecoregion lookup", "object": "ok_lake_ecoregions", "class": [ "data.frame" ], "fields": [ "lake_name", "eco_l3_code", "eco_l3_name", "n_sites_total", "n_sites_tier1", "latitude", "longitude", "max_yrs_tp", "max_yrs_chla", "max_yrs_secchi", "max_yrs_tn" ], "rows": 214, "table": true, "tojson": true }, { "name": "ok_reservoirs", "title": "Oklahoma reservoir morphometry dataset", "object": "ok_reservoirs", "class": [ "data.frame" ], "fields": [ "lake_name", "alt_name", "county", "managing_agency", 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