Thesis (M.S.)--Wisconsin. / Includes bibliographical references (leaves 73-81).

Thesis (M.S.)--University of Wisconsin--Madison, 1974. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (M.S.)--University of Wisconsin--Madison, 1972. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1956. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 141-143).

Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 240-263).

Selected pumping tests from the old province of the Punjab of West Pakistan were analyzed in detail, with a view to defining the hydraulic characteristics of the unconfined aquifer and evaluating the effects of various physical factors that govern the unconfined flow. An electric analog model study was made also to examine the effects of anisotropy, vertical components of flow, and the partial penetration of both the pumped well and the observation wells. From the analog study response curves were obtained for a representative pumping test in the Punjab0 These were used to determine the effects of anisotropy, partial penetration, and vertical flow components and to evaluate the results obtained from the application of equations of radial flow to an unconfined flow system. The significance of the delayed yield from storage was also studied using Boulton's method (1963). The response of the aquifer appeared to be artesian in the initial stages, which reflected the release of internal storage, but later changed to water table as additional yield accrued from lowering of the water table. The results of the study indicate that pumping tests in an Unconfined aquifer require much longer duration to meet the qualifying conditions for application of equations of radial flow that assume instantaneous release from storage and complete penetration of the aquifer. Further, it is shown that observation wells which are located at greater distances, but within certain practical limits, provide a better basis for interpretation of the test results than do wells in the region of flow convergence. The average transmissibility of the upper section of the aquifer, which represents a few hundred feet of aquifer thickness, was estimated as 0.5 ft^2/sec with an average lateral permeability of 0. 0015 ft/sec (1, 000 gpd/ft^2). The ultimate value of T for the entire thickness of the aquifer appears to be more than twice the value found from the tests of partial penetration on the basis of the electric analog study. The internal storage due to elastic properties of the aquifer is 0. 002, and the average specific yield is 0, 15. The time when the effect of delayed yield ceases to be significant ranges from 2 to 12 days, with an average of about 7 days. It is expected that results achieved by the present study will lead to improvements in existing methods of aquifer testing and analysis of results in the areas of investigation in West Pakistan.

Zalengei area, Darfur Province, Sudan, a semi-arid area, appears favorable in many respects for future agricultural development. The cultivation of new cash crops depends on the availability of adequate supplies of ground water of satisfactory quality to irrigate these crops. The principal aquifer in the area is unconfined in the valley fill sediments which form the Lower Terrace and the Flood Plain formations. The average thickness of the aquifer is some 90 feet, and its average transmissivity and storage coefficient are 100,000 gallons/day/foot, and 0.2 respectively. The storage capacity of the ground water reservoir is some 140,000 acre feet. Ground water is discharged from the basin by evapotranspiration, effluent seepage, and underflow out of the basin. Recharge to the ground water is from direct precipitation over the basin area, by influent seepage, and by underflow into the basin. The ground water supplies of the area have small amounts of dissolved solids, mostly bicarbonates and, carbonates. The waters that underlie Wadi Aribo are generally rich in calcium and magnesium bicarbonates, whereas those underlying Wadi Azum are rich in sodium carbonates and bicarbonates. The ground water underlying Wadi Azum is an approximate blend of the waters supplied by its tributaries and the water of the Large Dariba Lake. This lake has the highest content of fluoride yet known in natural waters. The arable land in the area is 7200 acres. The amount of ground water needed to irrigate these lands is about 21,600 acre-feet per year. About 20 per cent of this amount can be recharged to the ground water body from the annual precipitation over the basin area; the rest can be recharged by influent seepage from the wadis during flood time. Most of the water supplies are of excellent to good quality for irrigation and domestic uses.

The Iraqi Government is seriously considering the construction of a dam on the Euphrates River near the town of Haditha to better control water for irrigation on the Mesopotamian Plain, to generate hydropower and to alleviate flooding. The objective of the present study was to estimate the magnitude of possible losses from the reservoir due to seepage and evaporation. To estimate the water balance for the reservoir, all components must be estimated. Inflow was estimated based on the historical flow regime of the river but adjusted for the water requirements upstream in Syria and Turkey. Evaporation from the reservoir was estimated from pan evaporation data. Seepage losses were estimated by the Green and Ampt approach for infiltration. Complexity of the reservoir bed soil and limited data allowed only rough estimates of the water balance components. Annual expected evaporation losses from the reservoir was estimated to be 1.47 km³. The estimated seepage from the reservoir averages 0.47 km³/year for 11.5 years. Therefore, about 14% of inflow to the reservoir will be lost through seepage and evaporation for the first decade of operation. Further hydrological and geological studies are required before the feasibility of the project can be accurately assessed.

No description available.

xii, 80 p. : ill., maps (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number. / Choropleth maps are a popular way of depicting spatial data. The map communication model, which theorizes that geographic information is transmitted from the cartographer to the map user via a map, suggests that cartographers are responsible for clearly conveying spatial data in a way all map users can understand. Map users, however, come from different places and may harbor certain regional biases. This thesis investigates whether map users tend to focus on data patterns within their home regions during the visual-search and decision-making processes when reading classed choropleth maps, thereby exhibiting an egocentric map behavior. Seventy-one subjects took a computer-based test asking them to identify various phenomena on a series of choropleth maps of the lower 48 states. The results show a weak positive effect of egocentric map behavior; subjects who lived in a particular state longer were slightly more likely to choose states nearby their home region. / Committee in Charge: Dr. Amy Lobben, Chair; Dr. Dan Gavin