Complete issue of the Proceedings of the 1977 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 15-16, 1977, Las Vegas, Nevada

From the Proceedings of the 1978 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 14-15, 1978, Flagstaff, Arizona

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona / Low rainfall and humidity, and high evapotranspiration, make irrigation necessary for domestic plant growth in the American Southwest. Irrigation supplies are limited. A large percentage of potable water used in Southwestern homes is used for home irrigation. Another large percentage Is returned to sewers. Water and sewer fees are increasing because of rapid urban expansion and increased water-quality standards. As fees increase, supplemental home irrigation sources become attractive and are sought. Major supplemental water sources are grey water, harvested runoff, and roof runoff. The amount of grey water depends on family size and habits. The amount of harvested runoff depends on land size and slope, soil's and material's properties, and rainfall. The amount of roof runoff depends on roof size and geometry, and rainfall. The quality of these sources is generally suitable for home irrigation. Engineering systems are required to use supplemental home irrigation water. The most preferred systems will have low capital expenditure and low energy requirements. A large and significant reduction in municipal costs and services is possible if supplemental home irrigation water is developed. Small-scale analysis indicates that costs are favorable for supplemental irrigation systems. A suggested research program emphasizes field trials and demonstrations which test design, operation, maintenance, and economics, as well as public and institutional acceptance.

Complete issue of the Proceedings of the 1978 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona Academy of Science - April 14-15, 1978, Flagstaff, Arizona

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona / A method for estimating regional flood frequency was prepared by R. H. Roeske of the U.S. Geological Survey (USGS) in 1978 for the Arizona Department of Transportation. Hydrologists may wish to use these regression equations for estimating flood peaks or for other purposes in development or flood control engineering. Many of those needs are for watersheds smaller than 10 sq. mi., however, for which USGS measurements are scarce. Records from two groups of small experimental watersheds near Tombstone and Flagstaff, one gaged by the U.S. Department of Agriculture's (USDA) Science and Education Administration and the other by the Forest Service, were used to independently evaluate the generalized Arizona relationships in specific applications to small watershed work. The new design floods for each experimental watershed were compared with estimates made using the USGS equation for two of the six flood frequency regions (FFR) in Arizona. The study showed that use of the generalized regional curve may underestimate flood peaks. Deviations from the curve can be caused by land use changes, differences in analytical methods, and use of short records.

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona / Scientists and industrialists are now seeking from their reclamation brethren an explanation of the new criteria and standards which will enable all of us to recognize a visually reclaimed site when we see one. To do so may require more of the viewer than the ability to perceive visually. One must understand the larger game in which reclamation is played.

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona

From the Proceedings of the 1979 Meetings of the Arizona Section - American Water Resources Assn. and the Hydrology Section - Arizona - Nevada Academy of Science - April 13,1979, Tempe, Arizona