Land Surveying and Determination of Riverbed and Right of Way plus Basic Study for River Training of Khiavchai & Aharchai Rivers
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About Project
Due to the urban development in Ardabil Province in the recent decades, delineation of flood plain zone, riverbed and right of way in Ardabil Province’s rivers are vividly beneficial to prevent probable environmental damages. Therefore, considering this necessity and in order to implementation of controlling the construction in the rivers’ fringe, Ardabil Regional Water Company decided to determine the boundaries of flood plain zone and rivers’ floodway in the flood prone areas. Obviously, in the case of construction prevention in these areas, the damages of destructive floods will be definitely decreased and in addition, from the social facet, high risk areas are introduced to the inhabitants of the riversides.
Actual services:
The boundaries of the study area for basic study of river training included tributaries of Qarahsoo River and according to the contract, this study consisted of two sections, land surveying and flood plain zone, riverbed and right of way delineation. The basic study was as follows:
- Land surveying to prepare topographic maps with a scale of 1:1000, and contour level at 0.5 m in the length of approximately 34.3 km
- Studies on the riverbed and right of way limits determination with a length of about 42 km, for this purpose the following tasks have been done:
- Data collection
- Conducting baseline studies including:
Physio-graphical, meteorological and hydro-logical studies, geological surveying and borrow pit resources evaluation in the spatial scope of the project, socioeconomic studies in the affected areas, current land-uses identification
- Morphological study
- Hydraulic flow behavior simulation using HEC-RAS
- Exploring the situation of erosion and sedimentation in the rivers as well as interpreting and predicting river behavior in the future
- Identification of vulnerable areas to flood and flood plain zoning based on different flood recurrence intervals
- Providing managerial and constructive solutions for river training
