{ "_id": "6a1f1bfdb401979e7341f673", "Package": "swcEcon", "Title": "Economic Analysis of Soil and Water Conservation Measures in\nWatersheds", "Version": "0.1.0", "Authors@R": "person(\ngiven = \"Sadikul\",\nfamily = \"Islam\",\nemail = \"sadikul.islamiasri@gmail.com\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0003-2924-7122\")\n)", "Description": "Provides functions and benchmark datasets for the economic\nappraisal of soil and water conservation (SWC) measures in\nwatershed development projects. Implements benefit-cost ratio\n(BCR), net present value (NPV), internal rate of return (IRR)\nvia the bisection method of Brent (1973, ISBN:9780130223715),\nmodified BCR, marginal rate of return using the CIMMYT (1988,\nISBN:9686127127) method, payback period, soil loss economic\nvaluation via the Universal Soil Loss Equation of Wischmeier\nand Smith (1978, ISBN:0160016258), groundwater recharge\nvaluation, employment generation ratio, sensitivity analysis,\nswitching value analysis, and Monte Carlo simulation. Six\ndatasets are included: state-wise BCR benchmarks from NABARD\n(2019) watershed evaluations, USLE erodibility parameters for\nIndian soil orders from NBSS and LUP, rainfall erosivity for\ntwenty Indian districts from IMD data, SWC unit cost norms from\nPMKSY-WDC (GoI 2015), and two hypothetical datasets for\nillustration. Methods follow Gittinger (1982,\nISBN:9780801825439) and Squire and van der Tak (1975,\nISBN:9780801816697).", "License": "GPL (>= 3)", "Encoding": "UTF-8", "Language": "en-US", "LazyData": "true", "RoxygenNote": "7.3.3", "VignetteBuilder": "knitr", "Config/testthat/edition": "3", "NeedsCompilation": "no", "Packaged": { "Date": "2026-05-16 09:03:04 UTC", "User": "root" }, "Author": "Sadikul Islam [aut, cre] (ORCID:\n)", "Maintainer": "Sadikul Islam ", "Repository": "https://cran.r-universe.dev", "Date/Publication": "2026-04-16 21:07:30 UTC", "RemoteUrl": "https://github.com/cran/swcEcon", "RemoteRef": "HEAD", "RemoteSha": "54bc520d2ebc4c814715c987001fd9f46bccb5dc", "MD5sum": "5be1bdc37a7dec96d8437807958431dc", "_user": "cran", "_type": "src", "_file": "swcEcon_0.1.0.tar.gz", "_fileid": "f0ff82b5e45d3e953599d7f7d98a82b001a4947c2ec7860be4728058623c5bad", "_filesize": 271318, "_sha256": "f0ff82b5e45d3e953599d7f7d98a82b001a4947c2ec7860be4728058623c5bad", "_created": "2026-05-16T09:03:04.000Z", "_published": "2026-06-02T18:07:57.197Z", "_distro": "noble", "_jobs": [ { "job": 79139505906, "time": 119, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7032171908" }, { "job": 79139506667, "time": 128, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7032172811" }, { "job": 79139506013, "time": 173, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7032160905" }, { "job": 79139505476, "time": 95, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7365999735" } ], "_buildurl": "https://github.com/r-universe/cran/actions/runs/25957927089", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/cran/swcEcon", "_commit": { "id": "54bc520d2ebc4c814715c987001fd9f46bccb5dc", "author": "Sadikul Islam ", "committer": "cran-robot ", "message": "version 0.1.0\n", "time": 1776373650 }, "_maintainer": { "name": "Sadikul Islam", "email": "sadikul.islamiasri@gmail.com", "orcid": "0000-0003-2924-7122" }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 4.1.0", "role": "Depends" }, { "package": "stats", "role": "Imports" }, { "package": "graphics", "role": "Imports" }, { "package": "grDevices", "role": "Imports" }, { "package": "utils", "role": "Imports" }, { "package": "testthat", "version": ">= 3.0.0", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "covr", "role": "Suggests" } ], "_owner": "cran", "_selfowned": false, "_usedby": 0, "_updates": [ { "week": "2026-16", "n": 1 } ], "_tags": [ { "name": "0.1.0", "date": "2026-04-16" } ], "_stars": 0, "_userbio": { "uuid": 6899542, "type": "organization", "name": "cran", "description": "Unofficial read-only mirror of all CRAN R packages" }, "_downloads": { "count": 482, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/swcEcon" }, "_searchresults": 0, 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"table": true, "tojson": true }, { "name": "rainfall_erosivity_india", "title": "Rainfall erosivity (R-factor) for 20 Indian watershed districts", "object": "rainfall_erosivity_india", "class": [ "data.frame" ], "fields": [ "district", "state", "lat", "lon", "annual_rf_mm", "r_factor", "kharif_pct", "mean_temp_c" ], "rows": 20, "table": true, "tojson": true }, { "name": "swc_benchmarks", "title": "State-wise SWC watershed economic benchmarks for India", "object": "swc_benchmarks", "class": [ "data.frame" ], "fields": [ "state", "agro_zone", "annual_rainfall_mm", "bcr_min", "bcr_max", "bcr_typical", "irr_pct", "cost_per_ha", "egr_person_days_per_lakh", "pbp_years" ], "rows": 10, "table": true, "tojson": true }, { "name": "swc_cost_norms", "title": "SWC measure unit cost norms (PMKSY-WDC 2015, updated to 2024)", "object": "swc_cost_norms", "class": [ "data.frame" ], "fields": [ "measure", "unit", "norm_2015_inr", "norm_2024_inr", "design_life_yr", "omc_pct_capital", "labour_pct" ], "rows": 18, "table": true, "tojson": true }, { "name": "usle_india_soils", "title": "USLE erodibility and nutrient parameters for Indian soil orders", "object": "usle_india_soils", "class": [ "data.frame" ], "fields": [ "soil_series", "soil_order", "states_typical", "k_min", "k_max", "k_mean", "oc_pct", "t_value", "n_kg_per_t", "p_kg_per_t", "k_kg_per_t" ], "rows": 8, "table": true, "tojson": true }, { "name": "watershed_projects", "title": "Simulated watershed SWC project evaluation dataset", "object": "watershed_projects", "class": [ "data.frame" ], "fields": [ "project_id", "state", "swc_measure", "area_ha", "investment_lakh", "annual_benefit_lakh", "annual_omc_lakh", "discount_rate_pct", "project_life", "soil_loss_pre", "soil_loss_post", "gw_level_change_m", "irrig_area_added_ha", "employment_days", "hh_benefited", "bcr", "npv_lakh", "pbp_years" ], "rows": 50, "table": true, "tojson": true } ], "_help": [ { "page": "swcEcon-package", "title": "swcEcon: Economic Analysis of Soil and Water Conservation Measures", "topics": [ "swcEcon-package", "swcEcon" ] }, { "page": "calc_bcr", "title": "Benefit-cost ratio for SWC watershed projects", "topics": [ "calc_bcr" ] }, { "page": "calc_employment", "title": "Employment generation ratio for SWC projects", "topics": [ "calc_employment" ] }, { "page": "calc_irr", "title": "Internal rate of return for SWC watershed projects", "topics": [ "calc_irr" ] }, { "page": "calc_irrigation_benefit", "title": "Additional crop income from SWC-enabled irrigation", "topics": [ "calc_irrigation_benefit" ] }, { "page": "calc_mbcr", "title": "Modified benefit-cost ratio", "topics": [ "calc_mbcr" ] }, { "page": "calc_mrr", "title": "Marginal rate of return (CIMMYT method)", "topics": [ "calc_mrr" ] }, { "page": "calc_npv", "title": "Net present value for SWC watershed projects", "topics": [ "calc_npv" ] }, { "page": "calc_nutrient_cost", "title": "Nutrient replacement cost from soil erosion", "topics": [ "calc_nutrient_cost" ] }, { "page": 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