Engineering Commons^™

Field Calibration Of The Float Method In Open Channels, Jorge Escurra

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Surface velocity coefficients were calculated at five locations in three different irrigation canals in Logan, Utah. First, the total flow' rate was measured using current meters and calculated cross-sectional flow area. Second , the surface velocity was measured using four trials of the float method , and the average float travel time was calculated for each location and measurement instance. The measurements were taken on different days for various water depths in the canals. Third, the surface and mean cross-sectional velocities were divided , yielding the surface velocity coefficient, for every measurement at each of the five locations. Several channel …

Hydraulic Characteristics Of Labyrinth Weirs, Corwin M. Willmore

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Primarily, half-round crest labyrinth weirs were tested in this study with the side leg angle (a) ranging between 7 to 35 degrees. Historical data was primarily limited to quarter-round data. This study presents data and equations for estimating the discharge coefficient for labyrinth weirs with both half-round, quarter-round, and two Ogee-type crest weir shapes . A method is presented for comparing the flow capacity between weirs in order to determine the most efficient weir at a given Ht/P. For a labyrinth weir with the crest shape,# of cycles (N), and the cycle width (w) held constant, the discharge coefficient (Cct) …

Interim Sediment Management Plan For First Dam, Logan River, Thirumurugan Bose

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Sediment is a serious problem in the management of dams all over the world. In this project an interim sediment management plan for First Dam, on the Logan River in northern Utah, is discussed. The objective of the plan is to control the sediment budget of the reservoir in such a way that other reservoir maintenance activities (e.g., unusual draw downs for structural repairs) will produce minimal downstream environmental impacts on water quality and aquatic resources.

This report presents a detailed literature review of the various sediment management practices used for reservoir sediment control. It also discusses the downstream effects …