טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentAvraham Inbal
SubjectDevelopment of a General Method for
Calculation and Allocation of River Strips for a
Spatial Drainage System
DepartmentDepartment of Agricultural Engineering
Supervisor Professor Ori Lahav
Full Thesis text - in Hebrew Full thesis text - Hebrew Version


Abstract

The responsibility for drainage and flood relief is divided in Israel between 11 regional drainage authorities (DA). These DAs operate under the 1957 Drainage & Flood Control act. A basic tool in the work of a drainage authority is an "Approved Drainage Project Plan" (ADPP). This plan, required according to Chapter 4 of the Israeli Drainage act, gives power to the drainage authority to regulate and maintain drainage strips which have been formally declared. On the other hand, in the absence of such a plan drainage arteries may be exposed to many threats - some of which may be authorized by other design authorities and others illegal, intentional or unintended.

This work suggests and demonstrates the preparation of a Spatial Drainage Project Plan for the entire basin that is under the Drainage Authority's jurisdiction. A Basin Drainage Project is composed of individual drainage projects for many stream sections and arteries in a basin, and serves as a "Master Plan" for a future detailed design of drainage regulation in specific sections, should the need arise.

A Basin Drainage Project Plan specifies the typical cross-section width required for each artery to maintain its calculated design flow. Based on the calculated cross-sections, a diagram of so-called "known strips", required for the function of the drainage control design and for future regulation projects, is specified. The plan also includes flood-plane areas. Once approved as an ADPP under the Drainage Act, the DA has legal power and a professional basis to guarantee that the strips required for drainage regulation in its jurisdiction are retained, even if there is no present intention or ability to regulate a specific section.

The work specifies explicitly, for the first time, the stages in preparing a Basin Drainage Project Plan. To do so, it uses the Southern Jordan Drainage Authority (SJDA) as a case study.