Browsing by Subject "Flood control"
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Item Downstream effects on the flood hydrograph caused by upstream detention storage(Texas Tech University, 1985-12) Lee, Bin-yuNot availableItem The impotent toolkit : challenges and limitations of co-design for societal value in Southeast Louisiana's landscapes of African American dispossession(2015-05) McDowell, Robin Boeun; Lee, Gloria; Tang, Eric; Lewis, RandolphThis report details a reflexive practice that lies in the emerging field of co-design for societal value. This territory marks a move from user participation to equal empowerment of stakeholders--that is, designers, users, and other project constituents defining objectives and working through design processes together via a shared vision for more just and sustainable ways of living. The body of design work examined in this report is a combination of traditional products of graphic design, participatory design methods, and ethnography. Initiated around a physically demolished and institutionally repressed history of enslaved Africans in St. Charles Parish, Louisiana, the value of this work is not found in formal qualities of designed objects or in a groundbreaking process model, but in detailed documentation of consistent reflection on the role of the designer as outsider. This broadened analysis offers an expansion of the repertoire of co-design case studies.Item Investigating Rainwater Harvesting as a Stormwater Best Management Practice and as a Function of Irrigation Water Use(2012-02-14) Shannak, Sa'D Abdel-HalimStormwater runoff has negative impacts on water resources, human health and environment. In this research the effectiveness of Rain Water Harvesting (RWH) systems is examined as a stormwater Best Management Practice (BMP). Time-based, evapotranspiration-based, and soil moisture-based irrigation scheduling methods in conjunction with RWH and a control site without RWH were simulated to determine the effect of RWH as a BMP on a single-family residence scale. The effects of each irrigation scheduling method on minimizing water runoff leaving the plots and potable water input for irrigation were compared. The scenario that reflects urban development was simulated and compared to other RWH-irrigation scheduling systems by a control treatment without a RWH component. Four soil types (sand, sandy loam, loamy sand, silty clay) and four cistern sizes (208L, 416L, 624L, 833L) were evaluated in the urban development scenario. To achieve the purpose of this study; a model was developed to simulate daily water balance for the three treatments. Irrigation volumes and water runoff were compared for four soil types and four cistern sizes. Comparisons between total volumes of water runoff were estimated by utilizing different soil types, while comparisons between total potable water used for irrigation were estimated by utilizing different irrigation scheduling methods. This research showed that both Curve Number method and Mass-Balance method resulted in the greatest volumes of water runoff predicted for Silty Clay soil and the least volumes of water runoff predicted for Sand soil. Moreover, increasing cistern sizes resulted in reducing total water runoff and potable water used for irrigation, although not at a statistically significant level. Control treatment that does not utilize a cistern had the greatest volumes of predicted supplemental water among all soil types utilized, while Soil Moisture-based treatment on average had the least volume of predicted supplemental water.