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Open access

Andreea Mănescu, Luca Mihail and Mihalache Raluca

Abstract

The Siret River are used as raw water source for different municipal water supply systems, yet the Siret River are used as receiving bodies by some inhabitants and industry. In the study the quality of the Siret River water was determinate using a Water Quality Index (WQI). Results are presented from a field study performed on the Bistrita, Moldova, Suceava, Siret, Şomuzu Mare, Trotuş and Tributary River in the study area Siret Basin Romania. The main objective of this study was to determine is to find correlations land use to indicators physical-chemical of water quality, to investigate pollution source is more responsible for river water quality. This is of interest not only research context, but also for supporting and facilitating the application analysis postullend in the Water Framework Directive (WFD) (2000/60/CE) for the establishment of programmers of measures. For this purpose a slightly impact pollution source municipal wastewater treatment, land uses, urban, forest, agriculture and mining was selected and intensively monitored during six years January 2006 - December 2011, sampling was determined to meet the WFD standards for confidence in twenty two different control section of the Siret Basin. The main measures to reduce emissions to the Siret River were calcium, ammonium, sulfate, residue fixed (RF), sodium, chloride, free detergent and municipal wastewater treatment, concentrated on point emission. The main contributor to diffuse this parameters increased when more percentage of land was dedicated to industry and urban and less to forest and mining.

Open access

Mihaela Avram and Mihail Luca

Abstract

The paper presents an analysis of the high hydrological risk phenomena formed in the hydrographic basin of the Trotuş River in the last period of time. The Trotuş River and the tributaries are monitored by 21 hydrometric stations. Precipitation volume processing indicated a number of risk factors that have prevailed over the last 20 years. The hydrological data processing revealed the presence of several flood flows in the same year. The effects of the floods have materialized through the excessive degradation of river bedside regulation and shore defence works. The floods of the past 25 years have resulted in the destruction of a large number of economic and social objectives in the Trotuş River area, as well as human losses. Parameters of hydroclimatic risk highlighted by research are represented by torrential precipitations, floods with high probability, high frequency of high-flow flows, formation of high erosion velocities of the bed, etc. Parameters of hydroclimatic risk impose special conditions for the design of river regularization and shore defence.

Open access

Mihail Luca and Mihaela Avram

Abstract

The paper presents an analysis of the hydrological risk parameters registered in June 2016 in the catchment area of the Tazlăul Sărat River. The studies and researches were carried out on the upper course of the river, in the area between Zemeş and Toderaş, the commune of Zemeş, Bacau county. The river basin of the Tazlăul Sărat River has been affected by several floods in recent years. The floods have morphologically modified the minor and the major river bed, which has influenced the stability of the county road and the river construction. The study focused on the analysis of precipitation and liquid flows over a period of 20 years. Processing of liquid flow data revealed more flood flows in the same year. In 2016 there was a flow of 342 m3 / s (probability of 3%). The effects of the floods have materialized through the excessive degradation of shore defence works until their total destruction. The degradation of shore defence works has contributed to breaking the county road and limiting the road traffic. Parameters of hydroclimatic risk highlighted by research impose special conditions when designing shore defence works and protecting the road adjacent to the river.

Open access

Iustina Lateş, Mihail Luca, Gelu Ilie and Nicoleta Iurist

Abstract

The paper presents research conducted on the optimization of urban water supply networks. One direction of optimization follows the use of GIS models for digitization on components system. The use of water supply system operation depends on the proper functioning of the structural and functional components.

In the analysis it was found that the main components of the system are the following: capture, headrace, puming stations, reservoirs, distribution networks.

Each component is made up of a multitude of sub-components with specific structural and functional character. Using GIS program it follows to specify custom properties using layers of structural and functional domains. Autocad Civil 3D, GisNet Set, ArcGis Server and Autocad Toolbase programs allowed to obtain thematic maps on specific areas of the system. The model of the study can vary from simple to complex and can be generalized to any water supply system for a specific use (urban area, villages, tourist resorts, shopping complexes etc.).

Open access

Iustina Lateș, Mihail Luca, Ștefania Chirica and Nicoleta Iurist Dumitrașcu

Abstract

The development of a GIS model that includes both information on real estate cadaster and water supply networks is an efficient one. The paper presents the stages of making such a model, starting from field measurements, to structuring the database and custom layouts. Today’s large volume of data requires information to be centralized into tables that are then attached to graphical entities. In the analysis it was considered that the main components of the real estate cadaster system are the field, the parcel, the owner, and for the water supply network distribution networks, hydrants and manhole. GIS programs aim to specifying properties on custom layouts on structural and functional areas. Autocad and ArcMap software allow you to get themed maps on specific system domains. The study model can be simple to complex and can be generalized for any hydro-urban system (urban localities, rural localities, industrial areas, etc.).