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The Arizona Department of Transportation, the Arizona Game & Fish Department and the Arizona State Parks Board are required to conduct a study every three years on watercraft fuel consumption and recreational watercraft usage. The fuel consumption data is collected to determine the allocation of motor vehicle fuel tax to the State Lake Improvement Fund. The information on recreational watercraft usage patterns on Arizona’s lakes and rivers is necessary, in part, to determine the distribution of SLIF funds to applicants.
Letter from Michael J. Reardon to Carl T. Hayden, in agreement with Ralph Cameron, asserting that Bright Angel Trail should not be sold from Coconino County to the United States.
Letter from Carl T. Hayden to Michael J. Riordan explaining the benefits of selling Bright Angel Trail and building an approach road.
Since European settlement, pinyon-juniper woodlands have expanded into large portions of the southwestern United States historically occupied by grassland vegetation. Because grassland bird species are closely tied to vegetation structure, woodland expansion can substantially change the composition of breeding bird communities.
Effective integration of prescriptions employing aggregated retention of forest structure important to squirrels and other wildlife, reconstruction-based restoration prescriptions, and meso-reserves has the potential to optimize attainment of ponderosa pine forest ecosystem restoration and wildlife population goals.
