Browsing Hydrology and Water Resources in Arizona and the Southwest, Volume 06 (1976) by Issue Date
Now showing items 41-45 of 45
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Optimal Livestock Production of Rehabilitated Mine LandsStrip mining leaves behind spoils to be recontoured to maximize the benefit of livestock production on the rehabilitated land. This paper designs watersheds to achieve a balance between two main range livestock requirements, forage and stock water by way of grading and furrowing man-made slopes. The three design attributes, surface configuration, surface treatment, and range management policy are optimized with respect to maximal profit accounting for natural uncertainties in 3 variables, viz., time interval between storm arrivals, precipitation per storm event, and duration of the storm event. Runoff and sedimentation are modeled on an event basis as functions of said random variables. The stock water reservoir at the bottom of the watershed is dredged periodically. The stochastic model is applied to the Black Mesa in Northern Arizona which is in the process of being strip-mined for coal.
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Water in Arizona: A Reporter's HistoryOnce Arizona sent National Guard troops to the Colorado River in an effort to counter California's claim on that River's water. Then, in following years, the farming interests dominated Arizona economy and politics. The farming interests promoted in their behalf the powerful Salt River Project, and the concept of groundwater as a property right. Over the years, agricultural power has held fast with only slight modifications in the basic groundwater law; this has inhibited the scientific assessment of Arizona's groundwater resources. Projections of the dire effects of groundwater policies first came from a few mavericks in the academic community. As facts have accumulated, these projections appear to be essentially correct. It is now evident that city, farm and industry can join to manage and conserve what is left of the dwindling water resource, or they can dry-up separately.
