Water numbering in Austria

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In Austria, various systems of identification numbers for surface waters are maintained not only regionally, but also at the federal level .

Except as indicated in Water Information System Austria shortly WISA used water body numbers , also in Austrian publications to implement the EU - Water Framework Directive are used, there is the identification system of the Austrian hydrographic service (Hydrographic central office - HZB) and the Water Register Post number (WBPZ) .

principle

Every body of water ( lake , brooks , rivers , canals , ditches ) is assigned an identification number (similar to a postcode) in every existing system, which can be used to clearly identify it. The key figure is structured hierarchically so that conclusions can be drawn from it about the affiliation and position of the water body in a river system . Lakes can also be classified in the system via their runoff route. Since, except in very dry regions of the world, “drainage-free” bodies of water do not have any surface drainage, but one or more underground ones, these can also be assigned to the larger catchment areas .

However, the hierarchical structure is maintained to different degrees by the individual systems.

  • Actually, all of Austria's flowing waters belong to one of the three river basins Danube , Rhine in Vorarlberg and the Elbe via the Lainsitz , as well as other Vltava tributaries. However, some Austrian systems use more than three different initial digits by dividing the Danube basin in advance.
  • Some systems number up to the smallest stream in such a way that further digits are appended to the number of the receiving water / target water. Others are no longer numbered strictly hierarchically within a river basin.
  • Some systems leave out bodies of water below a certain size or below a certain hierarchy level.

Many, but not all, systems address its catchment area together with each body of water. The demarcation (and measurement) of the catchment areas is dispensed with in the lowest hierarchy levels.

Some systems also differentiate - not always consistently - according to water types ( e.g. the Swiss GEWISS numbers ), or leave out certain types of water entirely ( e.g. the French SANDRE code, the lakes).

Situation in Austria

There are several nationwide systematics for naming bodies of water with key figures. Independently of the federal water body identification, there are also state -specific water body identifications in the individual state information systems ( WIS ) (designations: WISID , LANDRID ). There is also a torrent and avalanche cadastre with its own, section- specific water body identification called WLKID .

In addition, the so-called area directory of the Hydrographic Central Office (HZB) exists for the individual river areas.

Overall water network of Austria (GGN)

The entire water network of Austria (GGN) is managed in the form of a reference data set for all water bodies within the federal territory. This builds on the existing water networks of the individual federal states and the water network in the torrent and avalanche cadastre .

The total water network defines a unique code number for each water body (KURZRID). This code number also serves as a water body identification for reports from Austria to the European Commission (see: Water Information System for Europe ) and INSPIRE .

The GGN, which is still under construction, is currently not freely available.

As in other countries, irrespective of the systematics of watercourses and their catchment areas, water bodies are specified with their own numbering.

HZB number

The identification system of the Austrian hydrographic service (Hydrographisches Zentralbüro - HZB) is a numerical-topographical classification system. It is based on the data that are compiled in the area registers of the Austrian river basins.

However, the numbers of the measuring points entered in numerous information lists are not related to the water body numbers of the HZB. And the list of the detailed catchment areas of the province of Upper Austria names the area directory numbers “RouteID”, while the water body numbers “HZB code”.

structure

According to the ramification of the river systems (mostly located outside of Austria), a distinction is made from sea tributaries to tributaries from tributaries of tributaries etc. 1st to 9th order waters . The number of each water body begins with the number of its target water body belonging to the next higher order. One digit is provided for the numbering of waters of the 1st order; groups of digits of up to three digits are appended for the numbering of the direct tributaries of a main river. These groups of digits are separated from each other by hyphens. River sections of a main body of water between its major primary tributaries are also given numbers on their hierarchical level. So one can assign less significant tributaries of the main water to the next lower hierarchical level (as it were its secondary tributaries). Up to nine number blocks are possible - see above.

Scheme of the longest possible HZB numbers with zeros as placeholders (in numbers that are actually assigned, the leading zeros in the number blocks are suppressed in the display):

0-000-000-000-000-00-00-00-00

The advantage of this classification system is that it shows the hierarchical position of a body of water in the entire flowing water system at a glance.

As with the German area codes, even end digits in the Austrian land register denote watercourses and uneven end digits denote river sections.

Numbers

The HZB system has three numbers for water bodies of the first order:

1 = Rhine
2 = Danube
3 = Elbe

The representation can be made with hyphens, or set consecutively without gaps, with a number or with leading zeros or spaces for a three-digit block. In lists where only tributaries of a river are shown, its digits are also completely omitted.

Example of a hierarchy:

Danube (as a whole) 2
Inn 2-8
Sill 2-8-153
Gschnitzbach 2-8-153-23
Grüblalmbach 2-8-153-23-8

Four flowing waters of the second network level flow into the Danube as the first network level, namely Inn, Lech, Isar and Drau. Every side water that flows directly into one of these four rivers with a 2nd ordinal number belongs to the 3rd network level and receives a third number block. A fourth and a fifth number block can be added for further subordinate network levels. (see HZB code chapter 3.3.1).

WISA water body numbers

In the case of water bodies, a distinction is made between deep groundwater bodies (TGWK), groundwater bodies (GWK) and surface water bodies (OWK). A water body is a uniform stretch of flowing water, largely comparable in its properties, with a catchment area of ​​more than 10 km² and a length of mostly several kilometers (see Water Framework Directive ). Since water bodies should not exceed or fall below certain sizes as far as possible, a body of water can be divided into several separately numbered water bodies , while another cannot be defined as a water body with its own water body number (WKN). When determining a body of water, several factors of the environment of the water body must be taken into account (see natural area ), and there is also a margin of discretion.

Form and initial digits

In the water information system Austria the water body numbers in nine of the defined river areas have 9 digits, in one of their 10.

The initial digits are assigned to the river basins as follows:

1 = Rhine (9 digits, often beginning with "10 ...")
2 = Elbe ( Lainsitz and other Vltava tributaries)
3 = Danube and its tributaries above Engelhartszell (up to this point the north bank belongs to Germany.)
4 = Danube and its tributaries except those of the March from Engelhartszell to Bratislava , including the Leitha
5 = March and its tributaries (in Austria especially the Thaya )
8 = Mur
9 = Drau
10 = Raab (10 digits, always beginning with "10 ...")

Numbers of water sections that connect to one another can differ in many places. No number has been assigned to waters under a certain size.

Wasserbuchpostzahl (WBPZ)

In Wasserbuch as a public register of water use rights are entered. In Austria the water book is available from the respective district administration . The water book post number (WBPZ) are numbers assigned in the water book, which are assigned to the corresponding right.

Former systems

Hydrography Act

The Hydrography Act, which was valid from 1979 to 2006, provided for another major division in Section 2 (1):

HZB number - water body name

1 = Rhine
2 = Danube above the Inn
3 = Inn to Salzach
4 = Salzach
5 = Inn below the Salzach
6 = Danube from the Inn to the Traun
7 = Traun
8 = Enns
9 = Danube from the Traun to the Kamp (without Enns)
10 = Moldau, i.e. Elbe
10 = Danube from Kamp including to Leitha (excluding March)
11 = March
12 = Leitha
13 = Rabnitz and Raab
14 = Mur
15 = Drau

Water Quality Survey Ordinance

The WGEV number according to the Water Quality Survey Ordinance used the same main classification with a slightly different representation:

0100 = Rhine
0200 = Danube above the Inn
0300 = Inn to Salzach
0400 = Salzach
0500 = Inn below the Salzach
0600 = Danube from the Inn to the Traun
0700 = Traun
0800 = Enns
0900 = Danube from the Traun to the Kamp (without Enns)
1000 = Moldau, i.e. Elbe
1000 = Danube from Kamp including to Leitha (without March)
1100 = March
1200 = Leitha
1300 = Rabnitz and Raab
1400 = Mur
1500 = Drava


See also

Web links

Individual evidence

  1. ↑ Information by email from the Federal Environment Agency GmbH dated February 11, 2015 to Asurnipal .
  2. ↑ Founded in Austria in 1893 as the Hydrographic Central Bureau - today part of the Hydrographic Service Austria (HD).
  3. ↑ See: Hydrographic data .
  4. ↑ Reporting water network .
  5. ↑ Reporting water network - total water network , website of the Federal Environment Agency, accessed on January 21, 2017.
  6. ↑ Based on a brief summary by the BMLUW, which Department IV / 4, Water Management, emails as a Word file on request: FLNR.DOC - The area figures of the Austrian river basins.
  7. ↑ Handbook of the Tyrol River Atlas, Point 3.3.1.
  8. ↑ Handbook of the Tyrol River Atlas, Point 3.3.3.4.1.
  9. ↑ See e.g. B. § 30a Para. 3 ÖWRG 1959 in which a body of water is defined as a " uniform and significant section of surface water ".
  10. ↑ Handbook of the Tyrol River Atlas, Point 3.3.4.
  11. ↑ Federal law on the survey of the water cycle and water quality (hydrology) - Hydrography Act StF: Federal Law Gazette No. 58/1979. The Hydrographic Act expired on December 22, 2006 (according to Federal Law Gazette I No. 82/2003).
  12. ↑ Ordinance of the Federal Minister for Agriculture and Forestry on the survey of water quality in Austria (Water Quality Survey Ordinance - WGEV), Federal Law Gazette No. 338/1991. Replaced on December 22, 2006 by the ordinance of the Federal Minister for Agriculture, Forestry, Environment and Water Management on the monitoring of the condition of water bodies (Water Condition Monitoring Ordinance - GZÜV), Federal Law Gazette II No. 479/2006.