An examination of the economic rationale behind soil conservation programs, an assessment of the magnitude of the soil erosion problem, and an evaluation of the effectiveness of U.S. soil conservation policies.

A step-by-step summary of an empirical time series analysis of the effects of a newly constructed dam on river flow rate is given. A model of river flow rate for the 522 weeks of data is built through the transfer function/intervention model development processes of Box-Jenkins/Box-Tiao....