swcEcon: Economic Analysis of Soil and Water Conservation Measures in
Watersheds
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).
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