3.2.2 . Drainages |
363 |
3.9.2.2 . Regulatory framework and management |
363 |
1 . Water Act 1999 |
364 |
2 . Law of Irrigation Associations 2001 |
364 |
3 . Management of hydromelioration |
365 |
4 . Strategy |
365 |
3.9.2.3 . GEODETIC WORKS |
365 |
1 . Type , volume , accuracy and course of geodetic works . General data |
365 |
2 . Design and tracing of the objects of irrigation and drainage systems and other | |
related objects |
366 |
2.1 . Principles of design and tracing |
366 |
2.2 . Illustration of the geodetic method application for design and tracing of | |
irrigation systems and fields |
367 |
2.3 . Vertical planning |
369 |
2.3.1 . Principle statements |
369 |
2.3.2 . Requirements towards the terrain for the different methods of surface | |
irrigation . Levelling of the terrain |
370 |
2.3.2.1 . Requirements towards the terrain |
370 |
2.3.2.2 . Levelling of the terrain |
370 |
1 . Advantages of levelling |
370 |
2 . Disadvantages of levelling |
371 |
3 . Types of terrain levelling |
371 |
3.1 . Basic |
371 |
3.2 . Current |
371 |
3.3 . Design of levelling |
371 |
3.3.1 . Methods |
371 |
3.3.11 . General solution |
371 |
3.3.1.2 . Square grid |
372 |
3.3.1.3 . Correction of horizontals |
373 |
3 . Tracing of irrigation and drainage systems and other related objects |
374 |
4 . Tracing and performing the levelling |
375 |
5 . Solutions for specific objects |
376 |
3.9.2.4 . Summary |
378 |
3.9.3 . FLOODS |
379 |
3.9.3.1 . Generally , on floods |
379 |
1 . General statements |
379 |
2 . Definitions |
379 |
2.1 . European Directives 2000 / 60 / EC and Directive 2007 / 60 / EU |
379 |
2.2 . Water Act in Bulgaria |
381 |
3 . Essence , methods and technologies and measures to prevent floods |
381 |
3.9.3.2 . Regulatory base |
383 |
3.9.3.3 . Flood risk assessment and management – maps and management plans |
384 |
1 . Problems and requirements |
384 |
2 . Preliminary flood risk assessment |
384 |
2.1 . Prescriptions in the regulatory base for the preliminary flood risk assessment |
384 |
2.1.1 . EU Directive |
384 |
2.1.2 . Water Act |
385 |
2.1.3 . Maps of the areas threatened by floods and maps of the areas at risk of | |
flooding |
385 |
3 . Composing maps of flood-threatened areas and areas at risk of flooding |
385 |