No abstract

In this study, synthetic unit hydrograph parameters which are qp, tp, t b are calculated by using Synder, Mockus, SCS (Soil Conservation Service) and DSI (State Hydraulic Works) methods. First according to observed data, calculations were done. Then the mentioned above methods, which are based on both topographic map and geographic information systems values, were applied. Three catchments, Damlıca, Vize, Kumdere were studied. Synder, Mockus, SCS and DSI methods were applied for each catchment.

In this study, the geomorphologic parameters of Damlıca basin are determined by using Geographic Information Systems (GIS). The digital elevation model (DEM) of the basin is downloaded from Aster-GDEM web page and this digital map is used in the GIS computer program to obtain the geomorphologic parameters of the Damlıca basin, such as the area of the basin, its perimeter, river length, slope, etc. The extracted parameters are compared with the parameters obtained by conventional methods. This study shows that the geomorphologic parameters of the Damlıca basin obtained using GIS are much more precise than those produced by conventional methods.

A culvert is a structure that allows water to flow under a road, railroad, trail, or similar obstruction, from one side to the other side. Typically embedded, so as to be surrounded by soil, a culvert may be made from a pipe, reinforced concrete or other material. In order to minimize the impact of a water crossing on the environment, culverts require the proper size, design and installation, to ensure that they do not cause downstream erosion, upstream flood, alter stream habitat or block organism passage. In this study, the size of a box culvert has been determined by getting more realistic maximum flow rates, by using data of a geographic information system. The results of this study have been compared with the rational method. The size of the culvert, which is calculated by using data from geographic information system will be more realistic and efficient, compared to the culvert, calculated by rational method.

This paper proposes an optimized, gravity-looped water network for tented camps as a replacement of the water trucking method, which depends on conveying water from resource to water tanks set up within camps by trucks, allowing people to carry water through containers to their tent; this method is used to supply people live in tented camps with water when providing water cannot be met in other ways. The cost of installing the gravity-looped network is minimized using Linear Programming to select pipe diameters from commercially available pipes. The method proposed was developed by Alperovits and Shamir (1977) and modified by Goulter and Coal (1986); linear formulations were solved by MATLAB, builds upon results obtained from EPANET. Tulol camp, located in Syria, was chosen as a case study, being supplied with water by trucking. Diameter changes, after optimization, are observed where the total cost of pipes decreased by 9.75%.